Starter ESPHome config
Built from the pinout above. Keys and the Wi-Fi password come from secrets.yaml in ESPHome. Check the pins against your hardware revision before flashing: one model can ship with different boards.
substitutions:
name: digitaling-20a-power-mon
esphome:
name: ${name}
friendly_name: "Digitaling 20A Power Monitor RTL8710BX t102-v1.1"
rtl87xx:
board: generic-rtl8710bn-2mb-788k # check your module
logger:
api:
encryption:
key: !secret api_key
ota:
- platform: esphome
password: !secret ota_password
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
ap: {}
captive_portal:
switch:
- platform: gpio
pin: PA15
id: relay1
name: "Relay" # Relay & LED2
restore_mode: RESTORE_DEFAULT_OFF
binary_sensor:
- platform: gpio
pin:
number: PA18
mode: INPUT_PULLUP
inverted: true
name: "Button" # Button (Inverted)
on_press:
- switch.toggle: relay1
status_led:
pin:
number: PA05
inverted: true # LED (Inverted)
sensor:
- platform: hlw8012
model: BL0937
sel_pin:
number: PA14
inverted: true
cf_pin: PA00
cf1_pin: PA12
voltage:
name: "Voltage"
current:
name: "Current"
power:
name: "Power"
energy:
name: "Energy"
update_interval: 10s
# calibrate voltage_divider and current_resistor against a known load
How to flash
- Most devices are flashed over UART: a 3.3 V USB-TTL adapter to RX, TX, GND and 3V3, holding GPIO0 to ground at power-on (ESP8266/ESP32). Mains power disconnected.
- Beken (BK72xx) and Realtek chips are flashed with ltchiptool, or with cloudcutter without opening the case if the firmware allows it.
- Details and board photos: the device page in the ESPHome database.
A config from scratch: ESPHome generator. Which pins are safe: pinout.