An easily constructed USB-powered pulse oximeter device that can be built for around $25 and features an OLED display.
Project tutorial by Arduino “having11” Guy
UV-C / heat, Arduino-controlled, face-mask disinfecting device for Coronavirus (SARS-CoV-2). #COVID19DetectProtect
Project tutorial by NeedLab
Need to control hundreds of relays with your Arduino, ESP8266, Pi, PC or Mac and activate them simultaneously within < 1 ms time window?
Project tutorial by Christian
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