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: smart-oil-gauge
esphome:
name: ${name}
friendly_name: "Smart Oil Gauge"
esp8266:
board: esp01_1m # most plugs and relays have 1 MB flash; check yours
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:
binary_sensor:
- platform: gpio
pin:
number: GPIO12
mode: INPUT_PULLUP
inverted: true
name: "Button" # Control Button (HIGH = off, LOW = on)
status_led:
pin:
number: GPIO2
inverted: true # Control Board LED (HIGH = off, LOW = on)
# Other pins from the pinout:
# GPIO14: Ultrasonic Power
# GPIO13: System Timer DONE (TP5111)
# GPIO15: Analog Switch SELECT (SN74LVC1G3157)
# GPIO0: UART download
# GPIO16: Connected to RST
# A0: Temperature or Battery Voltage
# GPIO5: Ultrasonic Echo (JSN-SR04T)
# TXD: UART0_TXD
# RXD: UART0_RXD
# GPIO4: Ultrasonic Trigger (JSN-SR04T)
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.