$20 #ESP32 based heart rate sensor & pulse oximeter #devkit with 200mAh battery. #healthcare #wifi #bluetooth #arduino
https://www.cnx-software.com/2020/08/31/heart-rate-development-kit-features-esp32-wisoc-max30102-pulse-oximeter-hr-sensor/
https://www.cnx-software.com/2020/08/31/heart-rate-development-kit-features-esp32-wisoc-max30102-pulse-oximeter-hr-sensor/