The ZMPT101B produces an isolated, scaled analog waveform related to AC voltage, but a small transformer on an exposed breakout does not make a mains…
We've already covered the TM1637 display as an interactive up/down counter with button controls and EEPROM storage. This project uses the same display…
A piezoelectric disc generates voltage when bent or struck and can act as an actuator when driven by an alternating voltage. Its pulse may reach a high…
The KY-039 uses adjacent infrared emitter and detector components to observe pulse-related changes in reflected light with suitable contact. It is an…