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Adafruit MagTag 2.9" Grayscale E-Ink Display (4800)
Adafruit MagTag 2.9

Available from:
Digikey.com
Shop.pimoroni.com
Eckstein-shop.de



Manufacturer:
Adafruit.com

Install method:
USB to Serial

GPIO #Component
GPIO00 None
GPIO01 WS2812
GPIO02 None
GPIO03 ???
GPIO04 ADC Input
GPIO05 None
GPIO06 None
GPIO07 None
GPIO08 None
GPIO09 None
GPIO010 User
GPIO011 Button 4
GPIO012 Button 3
GPIO013 Led 1
GPIO014 Button 2
GPIO015 Button 1
GPIO016 Output Hi
GPIO017 Buzzer
GPIO018 User
GPIO019 None
GPIO020 None
GPIO021 Output Lo
GPIO33 I2C SCL 1
GPIO34 I2C SCL 1
GPIO35 SSPI MOSI
GPIO36 SSPI SCLK
GPIO37 SSPI MISO
GPIO38 None
GPIO39 None
GPIO40 None
GPIO41 None
GPIO42 None
GPIO43 None
GPIO44 None
GPIO45 None
GPIO46 None
Configuration for ESP32-S2
{"NAME":"MagTag","GPIO":[0,1376,0,4705,4704,0,0,0,0,0,1,35,34,288,33,32,3840,480,1,0,0,3872,608,608,864,896,832,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":1}
Flash only with ESP32-S2 tasmota32s2... binaries.

An ESP32-S2 dev board with a 2.9” E-Paper display, various peripherals, and standard GPIO/I2C connectors for rapid prototyping.

This board uses an ESP32-S2-WROVER module with 4 MB flash and 2 MB PSRAM.

Flashing

When the board is booted into debug by holding BOOT and pressing the RESET button the USB port exposes a serial connection. This can be used to easily flash new firmware.

For flashing via tasmota32s2.factory.bin, download the tasmota32s2.factory.bin file.

esptool.py --chip esp32s2 --baud 115200 --before default_reset --after hard_reset --erase-all -z 0x0 tasmota32s2.factory.bin

Device Notes

Adafruit MagTag Front

Adafruit MagTag Back

Adafruit MagTag Pinout

Product Guide

Schematic

Peripherals

  • 2.9” 291x128 SPI E-Paper Display (IL0373 controller)
    • Not currently supported by Tasmota
  • 4x Front Panel User Buttons
    • On GPIO11-12 and GPIO14-15 (configured as Button 1-4, left to right)
  • 4x WS2812B Neopixel
    • On GPIO1 (configured as WS2812) with power on GPIO21 (configured as Output Low).
  • Back panel red status LED
    • On GPIO13 (configured as LED 1)
  • Analog light sensor
    • On GPIO3 (configured as Analog 2) with power on GPIO21 (already set to Output Low for NeoPixels)
  • PWM-capable Buzzer
    • On GPIO17 (configured as Buzzer) with power/enable on GPIO16 (configured as Output Hi).
    • Use BuzzerPWM console command to switch to PWM mode
  • 3-axis Accelerometer ((LIS3DH](https://www.st.com/resource/en/datasheet/lis3dh.pdf))
    • On I2C bus, interrupt on GPIO9 (not currently supported by Tasmota)
  • 2x 3-pin STEMMA JST-PH GPIO connectors
    • On GPIO18 (A1) and GPIO10 (D10) (both configured as User for setup via module)
  • STEMMA-QT JST-SH I2C bus connector
    • Both ports share the same bus, on GPIO33 (SCL) and GPIO34 (SDA) (configured as I2C 1).
  • 1S LiPo battery management subsystem with 2-pin JST-PH connector
    • Battery voltage divider on GPIO4 (configured as Analog 1)