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: arlec-grid-connect-smart
esphome:
name: ${name}
friendly_name: "Arlec Grid Connect Smart Plug In Socket With Energy Meter (PC191HA or PC191BKHA)"
bk72xx:
board: generic-bk7231n-qfn32-tuya # BK7231T or BK7231N: check the chip marking
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: P6
id: relay1
name: "Relay 1" # (PWM0) Relay
restore_mode: RESTORE_DEFAULT_OFF
- platform: gpio
pin: P8
id: relay2
name: "Relay 2" # (PWM2) Relay
restore_mode: RESTORE_DEFAULT_OFF
binary_sensor:
- platform: gpio
pin:
number: P11
mode: INPUT_PULLUP
inverted: true
name: "Button 1" # (TXD1) Button
on_press:
- switch.toggle: relay1
- platform: gpio
pin:
number: P11
mode: INPUT_PULLUP
inverted: true
name: "Button 2" # (TXD1) Button
on_press:
- switch.toggle: relay2
status_led:
pin:
number: P26
inverted: false # (PWM5) LED
sensor:
- platform: hlw8012
model: BL0937
sel_pin:
number: P24
inverted: true
cf_pin: P7
cf1_pin: P6
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
# Other pins from the pinout:
# P10: (RXD1) Wifi LED (hidden inside unit)
# P10: (RXD1) Wifi LED (hidden inside unit)
# P26: (PWM5) LED
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.