We built a simple Thermal camera using the MLX90640 Sensor, an ESP32, a ILI9341 TFT, a 18650 battery in a 3D printed case. It was featured in Netzbasteln #111 and still lacks interpolation.
Code Based on:
- Thermal Camera with image saving capability https://github.com/wilhelmzeuschner/arduino_thermal_camera_with_sd_and_img_processing
- SparkFun MLX90640 Examples https://github.com/sparkfun/SparkFun_MLX90640_Arduino_Example
- TFT_eSPI Library: https://github.com/Bodmer/, important: copy the included TFT_eSPI/Setup_User.h into the librar folder.
Hardware:
- ESP32 Devkit 4 (or any other ESP32): https://www.espressif.com/en/products/hardware/esp32-devkitc/overview
- MLX90640 Sensor Breakout Board: https://shop.pimoroni.com/products/mlx90640-thermal-camera-breakout (or the Sparkfun one)
- Display ILI9341 2.8": https://www.amazon.de/gp/product/B07DPMV34R/, https://www.pjrc.com/store/display_ili9341.html
- Charger TP4056: https://www.watterott.com/de/TP4056-Micro-USB-5V-1A-Lithium-Battery-Charger-with-Protection
- Battery 18650
- 3D Printed case:
ESP32 Pins (GND/VCC is obvious ;)
SENSOR_SDA 21
SENSOR_SCL 22
TFT_MISO 19
TFT_MOSI 23
TFT_SCLK 18
TFT_CS 15
TFT_DC 2
TFT_RST 4
Wemos D1 Mini Pins
SENSOR_SDA D2
SENSOR_SCL D1
TFT_MISO (D6)
TFT_MOSI/DIN D7
TFT_SCLK/CLK D5
TFT_CS D8
TFT_DC D3
TFT_RST D4