The device uses a PCB that integrates an ESP32-C3-mini with the CO₂ Sensor (SCD40). The PCB also has connectors for the ...

With the ESP32 wired between the handheld’s LCD and main PCB, the microcontroller can also act as a capture device using I2S camera mode.

Usually, when we see someone create a stylish e-ink project, they use a Raspberry Pi as its beating heart. However, that's ...