{"product_id":"ask-am-rf-super-heterodyne-remote-receiver-rx-module-433mhz-112dbm-rx-tx","title":"ASK AM RF Super-heterodyne Remote Receiver RX Module 433MHZ -112dBm RX TX","description":"\u003cdiv style=\"font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cdiv\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eQty: 1 PCS receiver module and 1 pcs transmitter module .\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e \u003c\/div\u003e\n \n\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eItem Description \u003c\/span\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e：\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\n\u003cp style=\"padding: 0px; margin: 0px;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"padding: 0px; margin: 0px;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan id=\"dvimg_ali_ali\"\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTechnical Data :\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e      \u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eReceiver Module No. : \u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eBX-RM06 -433\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e (match with our BX-TM01 -433 or BX-TM05 -433 module)\u003c\/span\u003e   \u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e    \u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eReceiver Sensitivity (dBm):-112 ;\u003c\/span\u003e\u003cbr\u003e\n\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\u003cfont size=\"5\"\u003e\u003cspan style=\"font-size: 14pt;\"\u003eOperating frequency (MHz): 433.92MHz ;\u003c\/span\u003e\u003c\/font\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eOperating Voltage (V):  DC 3-5.5V\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eLow power consumption : \u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e3.3V @ \u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e433.92MHz, 6.0mA \/ 3.3V @315MHz，4.8mA；\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eOperating temperature: -40 ℃ ~ +85 ℃\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e \u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003ePower enable mode when the power consumption can be done a minimum 50nA;\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e     \u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e Level output of the RSSI signal strength simulation;\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e \u003c\/div\u003e\n\n\u003cdiv\u003e     \u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eGood local oscillator radiation suppression, receiver module to work with (ie, single income) and will not interfere with each other, with the use does not affect the receiver distance\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp align=\"left\" style=\"margin-left: 36pt;\"\u003e \u003c\/p\u003e\n\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTransmitter module :  \u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eItem Description \u003c\/span\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e：\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTechnical Data :\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e             \u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eT\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eransmitter module No.: \u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eBX-TM01 -433\u003c\/span\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv align=\"left\" style=\"text-indent: 36pt;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv align=\"left\" style=\"text-indent: 36pt;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e \u003cspan style=\"font-size: 14pt;\"\u003eOperating frequency (MHz): 433.92MHz ( 315MHZ is available if required , other frequency can be custom made if order 100 pcs );\u003c\/span\u003e        \u003c\/span\u003e\u003cbr\u003e\n            \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv align=\"left\" style=\"text-indent: 36pt;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan line-height:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTransmit power: more than 10mW;\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cp align=\"left\" style=\"margin-left: 36pt;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eOperating Voltage (V):  DC 3-12V\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp align=\"left\" style=\"margin-left: 36pt;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003elow transmit of the static power consumption is current consumption\u003c\/span\u003e\u003cspan color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e : 10 mA ( No transmit No current consumption);\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e            \u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eSAW \u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eFrequency stability\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e :±75KHZ\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cp align=\"left\" style=\"text-indent: 36.75pt;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan background-clip:=\"\" background-origin:=\"\" color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eData transfer rate\u003c\/span\u003e\u003cspan background-clip:=\"\" background-origin:=\"\" color:=\"\" new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e  : 3 kb\/\u003cspan style=\"font-size: 14pt; background-origin: initial; background-clip: initial;\"\u003es\u003c\/span\u003e \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e        Operating temperature: -20 ℃ ~ +60 ℃\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 18pt; font-family: \" times=\"\"\u003e       \u003c\/span\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e        Size : \u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e11x16x5.5MM\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 24px; font-family: \" times=\"\"\u003e       \u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e        Type of Output: TTL\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 18pt; font-family: \" times=\"\"\u003eRunning TX433 and RX433 RF modules with AVR microcontrollers\u003c\/span\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\u003cp align=\"justify\" style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eSometimes in embedded design you may want to go wireless. Might be you will want to log various readings of remotely placed sensors, or simply build a remote control for robot or car alarm system.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp align=\"justify\" style=\"margin-bottom: 0in;\"\u003e \u003c\/p\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTransmitter and receiver modules are tuned to work correctly at 433.92MHz. Transmitter can be powered from 3 to 12V \u003c\/span\u003e\u003cspan style=\"position: static; font-family: inherit !important; text-decoration-line: underline !important;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003epower supply\u003c\/span\u003e\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e while receiver accepts \u003c\/span\u003e\u003cspan style=\"position: static; font-family: inherit !important; text-decoration-line: underline !important;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e5V\u003c\/span\u003e\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e. 5V is common for AVR microcontrollers so no problems with interfacing. Modules don't require addition components – just apply power and connect single data line to send information to\/from and that's it. For better distances apply 30 – 35cm antennas. Modules use Amplitude-Shift Keying(\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eASK\u003c\/span\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e) modulation method and uses 1MHz bandwidth.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eI have constructed two separate circuits for testing on Atmega8 microcontrollers.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTransmitter\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003cimg src=\"https:\/\/i.ebayimg.com\/00\/s\/ODg4WDk2Mg==\/z\/eY8AAOSwF25bDByW\/$_12.JPG?set_id=880000500F\"\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eReceiver\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cp align=\"center\" style=\"margin-bottom: 0in;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eFor testing I have used a prototyping board and breadboard.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cp align=\"center\" style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eAs you can see I have used one LED for indicating RF activity. Ok enough about hardware part – actually there is nothing more to say – circuits are simple.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp align=\"justify\" style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eLets move on to software part. Radio transmission is a bit more complicated than wired communications because you never know what radio signals are present on air. So all matters how transmitted signal is encoded. And this is a part where you have many choices: use hardware encoding like USART or write your own based on one of many ending methods like NRZ, Manchester etc. In my example I have used AVR USART module to form data packs. Using hardware encoders solves many problems like synchronization, start and stop, various signal checks. But as long as I was practising you cannot rely on plain USART signal. Here you can actually improvize by adding various checks and so on.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eI decided to form 4 byte data packages in order to send one byte information. These include:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003e\n\t\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eone \u003c\/span\u003e\u003cstrong new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003edummy\u003c\/strong\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e synchronization byte (10101010);\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\t\u003c\/li\u003e\n\t\u003cli\u003e\n\t\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eone \u003c\/span\u003e\u003cstrong new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eaddress\u003c\/strong\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e byte – in case there are more receivers(or transmitters\u003c\/span\u003e\u003cspan style=\"font-size: 14pt;\"\u003e);\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\t\u003c\/li\u003e\n\t\u003cli\u003e\n\t\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eone \u003c\/span\u003e\u003cstrong new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003edata\u003c\/strong\u003e\u003cspan style=\"font-size: 14pt;\"\u003e byte;\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\t\u003c\/li\u003e\n\t\u003cli\u003e\n\t\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eand \u003c\/span\u003e\u003cstrong new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003echecksum\u003c\/strong\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e which is actually a sum of address and data(address+data).\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp align=\"justify\" style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eWhy did I use a dummy byte at the beginning of package. Simply I noticed, that when transmitter doesn't transmit any data – receiver catches various noises that come from power supply or other sources because receiver likes adjust its input gain depending on input signal level. First byte tunes receiver to accept normal signal after then address byte, data and checksum can be read more reliably. Probably with different transmission modules you may exclude this dummy byte.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eTtransmitter program for AVR Atmega8:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e \u003c\/p\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#include \u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#include \u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#ifndef F_CPU\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\/\/define cpu clock speed if not defined\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define F_CPU 8000000\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#endif\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\/\/set desired baud rate\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define BAUDRATE 1200\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\/\/calculate UBRR value\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define UBRRVAL ((F_CPU\/(BAUDRATE*16UL))-1)\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\/\/define receive parameters\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define SYNC 0XAA\/\/ synchro signal\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define RADDR 0x44\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define LEDON 0x11\/\/switch led on command\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e#define LEDOFF 0x22\/\/switch led off command\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003evoid USART_Init(void)\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e{\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\t\/\/Set baud rate\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUBRRL=(uint8_t)UBRRVAL; \/\/low byte\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUBRRH=(UBRRVAL\u0026gt;\u0026gt;8);\t\/\/high byte\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\t\/\/Set data frame format: asynchronous mode,no parity, 1 stop bit, 8 bit size\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUCSRC=(1\u0026lt; \u003c\/span\u003e\n\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e(0\u0026lt; \u003c\/span\u003e \u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\/\/Enable Transmitter and Receiver and Interrupt on receive complete\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUCSRB=(1\u0026lt; \u003c\/span\u003e\n\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e}\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003evoid USART_vSendByte(uint8_t u8Data)\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e{\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e \/\/ Wait if a byte is being transmitted\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e while((UCSRA\u0026amp;(1\u0026lt; \u003c\/span\u003e\n\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\/\/ Transmit data\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e UDR = u8Data; \u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e}\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003evoid Send_Packet(uint8_t addr, uint8_t cmd)\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e{\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUSART_vSendByte(SYNC);\/\/send synchro byte\t\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUSART_vSendByte(addr);\/\/send receiver address\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUSART_vSendByte(cmd);\/\/send increment command\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tUSART_vSendByte((addr+cmd));\/\/send checksum\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e}\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003evoid delayms(uint8_t t)\/\/delay in ms\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e{\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003euint8_t i;\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003efor(i=0;i \u003c\/span\u003e\n\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e_delay_ms(1);\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e}\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eint main(void)\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e{\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eUSART_Init();\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003ewhile(1)\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\t{\/\/endless transmission\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\t\/\/send command to switch led ON\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tSend_Packet(RADDR, LEDON);\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tdelayms(100);\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\t\/\/send command to switch led ON\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tSend_Packet(RADDR, LEDOFF);\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\tdelayms(100);\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\t}\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e\treturn 0;\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cpre\u003e\n\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003e}\u003c\/span\u003e\u003c\/span\u003e\u003c\/pre\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e \u003c\/p\u003e\n\n\u003cp style=\"margin-bottom: 0in;\"\u003e\u003cspan style=\"font-size: 12px; font-family: Verdana, Arial, Helvetica, sans-serif; line-height: 18px;\"\u003e\u003cspan new=\"\" style=\"font-size: 14pt; font-family: \" times=\"\"\u003eIn my case I used UART 1200 baud rate. It may be increased or decreased depending on distance and environment. For longer distances lower baud rates works better as there is bigger probability for transmission errors. Maximum bit rate of transmitter is 8kbits\/s what is about 2400 baud. But what works in theory usually do not work in practice. So 1200 baud is maximum what I could get working correctly.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u0026lt;\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Eletechsup Original Factory Official‌ Store ","offers":[{"title":"Default Title","offer_id":46537072574621,"sku":"BX005*1+BX003*1","price":17.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/8622\/0189\/files\/10_07644213-77cd-45e9-a5e4-1ba0bd75454b.jpg?v=1740749405","url":"https:\/\/eletechsup.com\/es\/products\/ask-am-rf-super-heterodyne-remote-receiver-rx-module-433mhz-112dbm-rx-tx","provider":"Eletechsup Ready Stock Factory Store 6-10days to Worldwide","version":"1.0","type":"link"}