Footprint Projects

Footprint Projects is a small library of buildable electronics circuits, each one short enough for a weekend and substantial enough to teach a real concept. Every project ships with an animated hero diagram, a parts list priced live across distributors, phase-by-phase build steps, and a tutorial or video link so a beginner can finish it. Today the library covers a 555 blinker, an NE555 PWM motor controller, an LM741 Schmitt trigger, an IRLZ44N high-side switch, an MCP3008 ADC + Pi, a MAX7219 LED matrix, an ESP8266 weather node, an AMS1117 regulator, a 4017 LED chaser, an RC low-pass filter, an LDR light meter, a TP4056 charger, and more.