Adafruit QT Py ESP32-S3 Analog Input Pin Definition Problem

ESPHome
1

The Adafruit QT Py provides 4 AI channels. From the Adafruit documentation I crossed it to the ESP32-S3 datasheet and derrived the following table:

Pin Defs
Pin Defs1228×303 46.4 KB

My configuration is as follows:

esphome:
  name: 15a-battery-charger
  friendly_name: 15A Battery Charger

esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "wCChDvw1VhKU2Dl0RJrLEx7R4R2WvfojvYObxt3eyrg="

ota:
  password: "287d2074acd2415ee5bd552ee6fc0d62"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "15A-Battery-Charger"
    password: "C6FyC6fLE3zR"

captive_portal:
    
#--------------------------------------------------

sensor:
  - platform: adc
    pin: 24
    name: "Analog Input 1"
    update_interval: 1s
    filters:
      - offset: .1
      - multiply: 2

  - platform: adc
    pin: 23
    name: "Analog Input 2"
    update_interval: 1s
    filters:
      - offset: .2
      - multiply: 2

  - platform: adc
    pin: 14
    name: "Analog Input 3"
    update_interval: 1s
    filters:
      - offset: .3
      - multiply: 2

  - platform: adc
    pin: 13
    name: "Analog Input 4"
    update_interval: 1s
    filters:
      - offset: .4
      - multiply: 2

When I Install the code I get the following error for Pin’s 23 & 24:

INFO ESPHome 2024.3.1
INFO Reading configuration /config/esphome/15a-battery-charger.yaml...
Failed config

sensor.adc: [source /config/esphome/15a-battery-charger.yaml:35]
  platform: adc
  
  The pin GPIO24 is not usable on ESP32-S3s.
  pin: 24
  name: Analog Input 1
  update_interval: 1s
  filters: 
    - offset: 0.1
    - multiply: 2
sensor.adc: [source /config/esphome/15a-battery-charger.yaml:43]
  platform: adc
  
  The pin GPIO23 is not usable on ESP32-S3s.
  pin: 23
  name: Analog Input 2
  update_interval: 1s
  filters: 
    - offset: 0.2
    - multiply: 2

The ESP32-S3 has 20 available AI channels. The board “driver” esp32-s3-devkitc-1 after trial and error does install with Pins 6-10 configured. Am I missing something or is it possible that esp32-s3-devkitc-1 has a bug for Analog Inputs? If it’s the later where is a good spot to report this bug?

2

I just answered my own question. While the configuration defines “pin” the error come back as GPIO. Well that’s clear as mud :slight_smile: Off to try again.