es32d26 espHome.yaml
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# ESPHome Configuration
# Hardware: ESP32-DevKit C installed in Eletechsup ES32D26
#
# ┌─ DIP SWITCH SW1 NOTE ──────────────────────────────────────────┐
# │ Vo1/Vo2 (0-10V AO) and Io1/Io2 (0-20mA AO) share IO25/IO26. │
# │ Only ONE can be active at a time — set SW1 accordingly. │
# │ This config assumes SW1 is set to Vo1/Vo2 (0-10V) mode. │
# └────────────────────────────────────────────────────────────────┘
#
# ┌─ ADC2 LIMITATION ──────────────────────────────────────────────┐
# │ GPIO14 (Vi1) and GPIO27 (Vi3) are ADC2 pins. ADC2 cannot be │
# │ used while WiFi is active — these inputs are omitted. │
# └────────────────────────────────────────────────────────────────┘
#
# ┌─ 74HC595 PIN ASSIGNMENT NOTE ──────────────────────────────────┐
# │ The ES32D26 manual lists IO22/IO23/IO12/IO13 for the 74HC595 │
# │ but does not specify which pin is data/clock/latch/OE. │
# │ Four candidate configurations are provided below as comments. │
# │ Try each one until relays respond. The OE pin must be active │
# │ low — if no relays fire at all, OE is likely misconfigured. │
# │ │
# │ Config A (current — try first): │
# │ data=IO23, clock=IO22, latch=IO13, oe=IO12 │
# │ Config B: │
# │ data=IO23, clock=IO22, latch=IO12, oe=IO13 │
# │ Config C: │
# │ data=IO22, clock=IO23, latch=IO13, oe=IO12 │
# │ Config D: │
# │ data=IO22, clock=IO23, latch=IO12, oe=IO13 │
# └────────────────────────────────────────────────────────────────┘
esphome:
name: es32d26
friendly_name: "ES32D26 Controller"
esp32:
board: esp32dev
framework:
type: arduino
logger:
api:
encryption:
key: !secret api_encryption_key
ota:
- platform: esphome
password: !secret ota_password
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap:
ssid: "ES32D26 Fallback"
password: !secret fallback_password
captive_portal:
# ─────────────────────────────────────────────────────────────────
# RELAY OUTPUTS CH1-CH8
# 74HC595 shift register
# Relays are active low — inverted: true corrects the logic
# restore_mode: ALWAYS_OFF prevents all relays latching on boot
# ─────────────────────────────────────────────────────────────────
sn74hc595:
- id: sn74hc595_hub
data_pin: GPIO12
clock_pin: GPIO22
latch_pin: GPIO23
oe_pin: GPIO13
sr_count: 1
switch:
- platform: gpio
name: "CH1 Relay"
id: relay_ch1
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 0
inverted: false
- platform: gpio
name: "CH2 Relay"
id: relay_ch2
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 1
inverted: false
- platform: gpio
name: "CH3 Relay"
id: relay_ch3
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 2
inverted: false
- platform: gpio
name: "CH4 Relay"
id: relay_ch4
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 3
inverted: false
- platform: gpio
name: "CH5 Relay"
id: relay_ch5
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 4
inverted: false
- platform: gpio
name: "CH6 Relay"
id: relay_ch6
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 5
inverted: false
- platform: gpio
name: "CH7 Relay"
id: relay_ch7
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 6
inverted: false
- platform: gpio
name: "CH8 Relay"
id: relay_ch8
restore_mode: ALWAYS_OFF
pin:
sn74hc595: sn74hc595_hub
number: 7
inverted: false
# ─────────────────────────────────────────────────────────────────
# DIGITAL INPUTS IN1-IN8 (NPN opto-isolated)
# 74HC165 shift register
# PL (load) = IO15, CP (clock) = IO2, Q7 (data) = IO0
# ─────────────────────────────────────────────────────────────────
sn74hc165:
- id: sn74hc165_hub
clock_pin: GPIO2
data_pin: GPIO15
load_pin: GPIO0
sr_count: 1
binary_sensor:
- platform: gpio
name: "IN1 Digital Input"
id: din_in1
pin:
sn74hc165: sn74hc165_hub
number: 0
inverted: true
- platform: gpio
name: "IN2 Digital Input"
id: din_in2
pin:
sn74hc165: sn74hc165_hub
number: 1
inverted: true
- platform: gpio
name: "IN3 Digital Input"
id: din_in3
pin:
sn74hc165: sn74hc165_hub
number: 2
inverted: true
- platform: gpio
name: "IN4 Digital Input"
id: din_in4
pin:
sn74hc165: sn74hc165_hub
number: 3
inverted: true
- platform: gpio
name: "IN5 Digital Input"
id: din_in5
pin:
sn74hc165: sn74hc165_hub
number: 4
inverted: true
- platform: gpio
name: "IN6 Digital Input"
id: din_in6
pin:
sn74hc165: sn74hc165_hub
number: 5
inverted: true
- platform: gpio
name: "IN7 Digital Input"
id: din_in7
pin:
sn74hc165: sn74hc165_hub
number: 6
inverted: true
- platform: gpio
name: "IN8 Digital Input"
id: din_in8
pin:
sn74hc165: sn74hc165_hub
number: 7
inverted: true
# ─────────────────────────────────────────────────────────────────
# 0-10V ANALOG OUTPUTS Vo1 & Vo2
# GPIO25=DAC1 (Vo1), GPIO26=DAC2 (Vo2)
# ─────────────────────────────────────────────────────────────────
output:
- platform: esp32_dac
pin: GPIO25
id: dac_vo1
- platform: esp32_dac
pin: GPIO26
id: dac_vo2
number:
- platform: template
name: "Vo1 Output (0-10V)"
id: vo1_level
min_value: 0
max_value: 100
step: 1
unit_of_measurement: "%"
icon: "mdi:sine-wave"
optimistic: true
restore_value: true
initial_value: 0
set_action:
- output.set_level:
id: dac_vo1
level: !lambda "return x / 100.0;"
- platform: template
name: "Vo2 Output (0-10V)"
id: vo2_level
min_value: 0
max_value: 100
step: 1
unit_of_measurement: "%"
icon: "mdi:sine-wave"
optimistic: true
restore_value: true
initial_value: 0
set_action:
- output.set_level:
id: dac_vo2
level: !lambda "return x / 100.0;"
# ─────────────────────────────────────────────────────────────────
# ANALOG INPUTS
#
# Vi2 (GPIO33) and Vi4 (GPIO32) — ADC1, work with WiFi active
# Vi1 (GPIO14) and Vi3 (GPIO27) — ADC2, disabled (incompatible with WiFi)
#
# Filter formula from ES32A08 reference: x / 10.0 * (10.0 + 43.0)
# This accounts for the onboard resistor divider (10K + 43K).
# Adjust the 43.0 value if your readings don't match a known input voltage.
# ─────────────────────────────────────────────────────────────────
sensor:
- platform: adc
pin:
number: GPIO33
mode:
input: true
name: "Vi2 Voltage Input"
id: vi2
attenuation: auto
update_interval: 5s
unit_of_measurement: "V"
accuracy_decimals: 2
filters:
- lambda: return x / 10.0 * (10.0 + 43.0);
- round: 2
icon: "mdi:flash"
- platform: adc
pin:
number: GPIO32
mode:
input: true
name: "Vi4 Voltage Input"
id: vi4
attenuation: auto
update_interval: 5s
unit_of_measurement: "V"
accuracy_decimals: 2
filters:
- lambda: return x / 10.0 * (10.0 + 43.0);
- round: 2
icon: "mdi:flash"
# Current inputs — all on ADC1, work with WiFi active
# Shunt resistor on ES32A08 is 91 ohm (4mA=0.364V, 20mA=1.82V)
# Adjust min_v/max_v if your board uses a different shunt value
- platform: adc
pin:
number: GPIO34
mode:
input: true
name: "Ii1 Current Input"
id: ii1
attenuation: auto
update_interval: 5s
unit_of_measurement: "mA"
accuracy_decimals: 2
filters:
- lambda: |-
float min_v = 0.364;
float max_v = 1.82;
float ma = (x - min_v) * 20.0 / (max_v - min_v);
if (ma < 0.0) ma = 0.0;
if (ma > 20.0) ma = 20.0;
return ma;
- round: 2
icon: "mdi:current-dc"
- platform: adc
pin:
number: GPIO39
mode:
input: true
name: "Ii2 Current Input"
id: ii2
attenuation: auto
update_interval: 5s
unit_of_measurement: "mA"
accuracy_decimals: 2
filters:
- lambda: |-
float min_v = 0.364;
float max_v = 1.82;
float ma = (x - min_v) * 20.0 / (max_v - min_v);
if (ma < 0.0) ma = 0.0;
if (ma > 20.0) ma = 20.0;
return ma;
- round: 2
icon: "mdi:current-dc"
- platform: adc
pin:
number: GPIO35
mode:
input: true
name: "Ii3 Current Input"
id: ii3
attenuation: auto
update_interval: 5s
unit_of_measurement: "mA"
accuracy_decimals: 2
filters:
- lambda: |-
float min_v = 0.364;
float max_v = 1.82;
float ma = (x - min_v) * 20.0 / (max_v - min_v);
if (ma < 0.0) ma = 0.0;
if (ma > 20.0) ma = 20.0;
return ma;
- round: 2
icon: "mdi:current-dc"
- platform: adc
pin:
number: GPIO36
mode:
input: true
name: "Ii4 Current Input"
id: ii4
attenuation: auto
update_interval: 5s
unit_of_measurement: "mA"
accuracy_decimals: 2
filters:
- lambda: |-
float min_v = 0.364;
float max_v = 1.82;
float ma = (x - min_v) * 20.0 / (max_v - min_v);
if (ma < 0.0) ma = 0.0;
if (ma > 20.0) ma = 20.0;
return ma;
- round: 2
icon: "mdi:current-dc"
- platform: template
name: "Vo1 Voltage (estimated)"
lambda: "return id(vo1_level).state / 10.0;"
unit_of_measurement: "V"
accuracy_decimals: 1
update_interval: 5s
icon: "mdi:flash"
- platform: template
name: "Vo2 Voltage (estimated)"
lambda: "return id(vo2_level).state / 10.0;"
unit_of_measurement: "V"
accuracy_decimals: 1
update_interval: 5s
icon: "mdi:flash"