My submissions to a list of electronics challenges I found on 4chan.
Instead of post IDs, you can use a random number generator. Or just choose a project catches your interest and matches your skill.
Please be safe when handling high-voltage projects!
Due to the large variation in skill levels and materials required for each project, do not be afraid to reroll. This list is mostly meant for inspiration so don't feel obligated to do a project you can't afford.
Usage of microcontrollers aisre frowned upon in projects that can be done without them. However, some projects listed do require some sort of microcontroller.
- Linear PSU
- Switching PSU
- Voice Changer
- "The Clapper"
- LC Meter
- VU Meter
- Breathalyzer
- Digital Clock (Segment Display)
- Digital Clock (LED Matrix)
- Nixie Clock
- Inverted Pendulum
- Tube Audio Amplifier
- Battery Charger
- Stepper Driver
- Maze Solving Robot
- LED Tachometer
- Simple Music Player
- 3x3x3 LED Cube
- 555 Amplifier
- Turning Signal FSM
- Clark Zapper
- Lacob's Ladder
- Darkness Detector
- Knight Rider
- Nuclear Siren
- LED Dice
- LED Dimmer
- Metal Detector
- Music Box
- Reaction Time Game
- Stun Gun
- Ticking Bomb
- Toy Organ
- Traffic Lights FSM
- LED Chaser
- BitCake
- Tesla Coil
- Speech Jammer
- Termperature Controlled Fan
- Motorized Curtains With Remote
- TV-Be-Gone
- FM Radio
- Plasma Radio
- PIR Motion Sensor
- Coil Gun
- Plants Watering Watcher
- Plasma Speaker
- Digital Counter
- 4 Bit ALU
- Walkie Talkies
- Rail Gun
- CMOS Pocketable Timer
- Laser Light Show
- POV Wand
- Conway's Game of Life
- CNC Machine
- Octolively
- Google "IC +
<random 7 digit number>" and build something with it - Nickelodeon
- Sputter Gun
- Vacuum Chmber
- DIY X-Ray CT Scanner
- DIY Electron Microscope
- Useless Machine
- Quadcopter
- Launchpad
- Arcade Machine
- Pinball Machine
- Gated Oscillator
- Waveform Clipper
- Sound-Level Meter
- Solar Cells
- Low-Pass Filter
- High-Pass Filter
- Parabolic Microphone
- Cell Phone Detector
- Water Level Controller
- LED Equalizer (Hard Mode: Water Pressure Equalizer)
- Digital Tachometer
- Boolean Algebra Calculator
- Mobile Jammer
- Rain Alarm
- PWM Motor Speed Controller
- Auto Targetting Nerf Turret
- FM Bugger Circuit
- Altoid USB Charger
- Monostable Multivibrator
- Polarity Continuity Tester
- Night Vision Goggles
- Laser Audio Surveillance
- Induction Engine
- Induction Heater
- DIY Laser
- Robots Playing Tag
- Swarm Bots
- Wireless Power Station + Adapter
- Automatic Etch-A-Sketch
- Water Purity Tester
- Electroadhesion Wall Scaling Robot
- Coat Hanger Walker