The popular smart switch Sonoff Basic from ITEAD has recently become available in a new version. The Sonoff Basic R3 is the successor of the trusted Sonoff Basic
With an ESP-WROOM-02 and an MQ-3 alcohol sensor you can easily make a portable alcohol detector. It will be a simpler implementation of the earlier project “Arduino breathalyzer:
Creating a temperature and humidity display with Arduino is really easy. Connect an Arduino, an LCD screen and a sensor with wires and you are ready to start
This Arduino Halloween Soundboard is again a simple project built with parts that I already had. The soundboard is very simple. There are 16 MP3s on the SD
