📇 DIY Kit Index 51 kits in the database

Title ▲ Level Added
4017 LED Chaser (Knight Rider Light) Medium 2026-07-27
7-Segment Display Counter Medium 2026-07-27
Astable Multivibrator — 2-Transistor LED Flasher (No 555) Medium 2026-07-27
Battery Level Indicator (LED Bar) Medium 2026-07-27
Bistable Flip-Flop (Push-Button Latch) Medium 2026-07-27
Capacitor Bank Flash (Camera-Flash-Style Discharge) Medium 2026-07-27
Capacitor Charge/Discharge LED Fader Easy 2026-07-27
Coin-Cell LED Throwie — the Simplest Possible Project Easy 2026-07-27
Continuity Tester / Cable Checker Easy 2026-07-27
Darlington Pair Relay Driver Medium 2026-07-27
Electronic Dice (555 + CD4017) Medium 2026-07-27
FM Radio Receiver Kit (Simple Crystal-Style) Medium 2026-07-27
Gas/Smoke Sensor Alarm Medium 2026-07-27
High-Pass Filter / Treble Booster Easy 2026-07-27
IR Proximity Detector Medium 2026-07-27
IR Remote-Control Tester Easy 2026-07-27
Joule Thief — Squeeze the Last Drop from a Battery Medium 2026-07-27
LC Tank Circuit Demonstrator Medium 2026-07-27
LDR Dark-Activated Relay Switch Medium 2026-07-28
LED Blinker (555 Timer) Easy 2026-07-27
Laser Trip-Wire Alarm Medium 2026-07-27
Light-Activated Switch Easy 2026-07-27
Low-Pass Audio Filter Box Easy 2026-07-27
Magnetic Reed-Switch Door Alarm Easy 2026-07-27
Metal Detector (Simple LC Oscillator) Medium 2026-07-27
Morse Code Practice Oscillator Easy 2026-07-27
NE555 Monostable Pushbutton Timer Easy 2026-07-28
NE555 PWM Motor Speed Controller Medium 2026-07-27
Op-Amp Comparator Night Light Medium 2026-07-27
Optocoupler Isolated Switch Easy 2026-07-28
Photodiode Light Meter Medium 2026-07-27
QRP 1-Watt CW Transmitter Medium 2026-07-27
RC Timer / Delay-On Relay Easy 2026-07-27
RGB LED Color Mixer Easy 2026-07-27
Schmitt Trigger Square Wave Generator Medium 2026-07-27
Simple Burglar Alarm (Switch + Siren) Medium 2026-07-27
Simple Intercom (Two-Speaker Wired) Medium 2026-07-27
Simple Solar Battery Charger Easy 2026-07-27
Simple Transistor Audio Amplifier Easy 2026-07-27
Siren/Alarm Sound Generator (555) Medium 2026-07-27
Soil Moisture Alarm (Plant Watering Reminder) Easy 2026-07-27
Sound-Activated Switch Medium 2026-07-27
Temperature-Triggered Fan Switch (Thermistor) Medium 2026-07-27
Touch-Sensitive Switch (555) Easy 2026-07-27
Transistor RC-Delay LED Easy 2026-07-28
Two-LED Alternating Flasher Easy 2026-07-27
USB Power Bank from 18650 Cell Easy 2026-07-27
Vibration/Tilt Sensor Alarm Easy 2026-07-27
Voltage Divider Multimeter Demo Board Easy 2026-07-27
Voltage Follower Buffer Demo Easy 2026-07-27
Voltage Regulator Demo (7805 Board) Easy 2026-07-27
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