autohuttli/NOTES.md

1.2 KiB

autohuttli nodes

AtomS3 Lite

https://shop.m5stack.com/products/atoms3-lite-esp32s3-dev-kit

https://docs.m5stack.com/en/core/AtomS3%20Lite

Schematic

ESP32-S3FN8

I/O:

  • Button on G41
  • IR LED on G4
  • WS2812 LED on G35
  • Port A on G1 and G2

ADC I2C Unit v1.1 (ADS1110)

Schematic

Datasheet

Reference is 2.048V with a PGA of 1 to 8. Has a 510 k / 100 k voltage divider giving a 6.1 divisor or a FSD of 12.5 V.

Changed to a 75 / 39 k divider giving 2.92 divisor or FSD of 5.99 V.

BTHome ESPNow bridge

Boards:

XIAO ESP32C3

https://wiki.seeedstudio.com/XIAO_ESP32C3_Getting_Started/

https://files.seeedstudio.com/wiki/XIAO_WiFi/Resources/Seeeduino-XIAO-ESP32C3-SCH.pdf

Growatt ShineWIFI-X

A ESP-07. The vendor firmware sends 00 03 00 2b 00 01 f5 d3 periodically at 115200N81, which is a MODBUS query.

There are many existing implementations: