Overview
There is a new version of the ECG-DIY kit based on the ESP32 microcontroller, replacing the previous model that used the Heltec Wifi Kit 8 with an ESP8266 (160MHz Tensilica L06). This updated version features the Heltec Wifi Kit 32 V3, which integrates the more powerful ESP32-S3FN8 with a dual-core Xtensa® 32-bit LX7 processor.
Compared to the ESP8266, the ESP32 offers significantly higher performance and expanded capabilities. Notably, it provides additional 12-bit ADC channels, enabling measurement of the Active Reference Feedback (ARF) from the base plate. This allows for more robust signal quality and real-time monitoring of the body’s reference potential.
