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This project builds a portable Bluetooth speaker from modules up: a Bluetooth audio receiver takes music wirelessly from a ph...
This project builds a precision digital clock: a DS3231 real-time-clock chip keeps time with temperature-compensated accuracy...
This project builds a working 3-floor miniature elevator: an Arduino drives a DC gear motor that raises and lowers a cabin on...
This project builds a contactless digital tachometer: an IR reflective sensor watches a marked motor shaft, an Arduino counts...
This project builds a 4x4x4 LED cube: 64 LEDs hand-soldered into a three-dimensional grid, driven by an Arduino through 74HC5...
This project builds a real-time audio spectrum analyzer: an electret microphone captures sound, an Arduino samples it and run...
This project builds a robot car that drives from hand tilts: a glove-mounted MPU6050 accelerometer senses the hand's orientat...
This project builds a digital capacitance meter around the classic 555 timer astable circuit: the unknown capacitor sets the...
This project builds a 4-team quiz buzzer system where the fastest press locks out all other teams, lights the winning team's...
