Infrared Camera

Status: Currently awaiting this issue to be fixed for arduino-esp32

Hardware

• Adafruit ESP32-S2 Metro
  • Schematic
  • Pintout
• Adafruit MLX90640 55°
• MCUFriend TFT 480x320 - this is a generic part, my controller is ILI9481

Pinout

LCD Pin	ESP32-S2 Metro Pin
LCD_RD	A0
LCD_WR	A1
LCD_RS	A2
LCD_CS	A3
LCD_RST	A4
X	A5

LCD DataPin	ESP32-S2 Metro Pin
LCD_D7	12
LCD_D6	11
LCD_D5	10
LCD_D4	9
LCD_D3	8
LCD_D2	7

LCD Pin	ESP32-S2 Metro Pin
SD_SCK	42
SD_DO	21
SD_DI	16
SD_SS	15
LCD_D1	14
LCD_D0	13

Building with ESP-IDF

1. Download [ESP-IDF]¹ via git

    git clone --recursive https://github.com/espressif/esp-idf.git
   

2. Install ESP-IDF

    ./install.ps1
   

3. Activate environment

    ./export.ps1
   

4. Create new project, set chip to esp32s2

    idf.py set-target esp32s2
   

5. Configure project

    idf.py menuconfig
   

6. Must set CONFIG_ESP_CONSOLE_USB_CDC=y in sdkconfig (otherwise the [usb/serial port]² will not work)

7. Build

    idf.py build
   

8. Upload

    idf.py -p com4 flash
   

Monitoring from the command line

python (whereis miniterm.py) com7 115200

Future Ideas

• Add a camera and overlay thermal/infradata on top of it

Footnotes

1. https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/get-started/index.html ↩

2. https://github.com/espressif/arduino-esp32/blob/master/boards.txt#L3338 ↩