WG18A02 FAQ
Share
Q:
this is code im using
import time
import serial
import binascii
ser = serial.Serial(
port='/dev/ttyS0',
baudrate = 9600,
parity=serial.PARITY_NONE,
stopbits=1,
bytesize=serial.EIGHTBITS,
timeout=1
)
while 1:
ser.write(b'\x01\x03\x00\x00\x00\x03\x05\xCB')
x=ser.readline()
hex_string = binascii.hexlify(x).decode('utf-8')
res= str(hex_string)
print(res)
its Python
im connecting Raspberry Pi4 to UART (serial0) pins
and this script give me answer \x7f~\xbe\xff\xff\xfb\xff\xf9\x7f\t
A :
Please use the intuitive serial port assistant for debugging.
Q:
Is a any difference in the operation of WG18A02 etween 5 and 12 volts? Im asking because i need to connect max around 160 devices and wonder about voltage
A:
It is recommended to use the 12V version, 12V is more stable