LEGO Drawing Machine: JK Brickworks built this machine with LEGO pieces. It can create different patterns like a Spirograph.
Chess Playing Robot: so you love robots and chess? This guide shows you how to build a chess playing robot with sensors and servo motors.
Beer Pong Robot: SparkFun built this beer pong robot with a Teensy 3.2, motor driver, sensors, micro gearmotors, wheels, and few other parts.
1500+ Firework Machine Gun: a crazy project for 4th of July and other special occasions.
1000W LED Flashlight: one of the brightest flashlights we have seen. It was used 10 x 100-watt LED chips, each one attached to a large heat sink with bolts and thermal compound to help the heat transfer.
Airsoft BB Machine Gun: fires 5000 rounds per minute. Its trigger is an air compressor blow gun while the hopper is a small soda bottle.
Chainsaw Blender: lets you blend drinks with a gasoline powered chainsaw. It consists of a 37cc two-stroke chainsaw engine, throttle, kill switch, and motorcycle handlebars.
Motion Tracking Michael Myers with Arduino: the perfect project for Halloween. It was programmed in Python.
Loulou Steampunk Task Light: a DIY steampunk lamp that you can build using a 3D printer and laser cutter.
DIY Rocking Speeder Bike: another fun project for Star Wars fans. It rocks back and forth to keep your child calm.
Gemma-Powered NeoPixel LED Sound Reactive Drums: this set reacts to sound. You will need a mic amp sensor, Gemma, and a few other parts.
Motorized Hidden Cabinet: this project shows you how to build your own motorized cabinet to hide your valuable things.
DIY Mini Magnet Gun: a magnet dart gun that shoots magnetic ammo into wood and anything else you can think of.
Bullet Shell Brass Knuckles: this guide from Grant Thompson shows you how to use brass bullet shells to make your own brass knuckles.
Desktop Nitrocellulose Cannon: this cannon launches nitrocellulose fireballs. It is made out of 3/4″ copper pipe and fittings.
Plywood Cat Exercise Wheel: want to give your cat a workout? This exercise wheel may be worth a shot. It was built from plywood and assembles like a puzzle.
DIY Glowing Jellyfish Skirt: this colorful skirt was made using Arduino. You will need 200 x 2 m long fiber optics, Arduino, 5V RGB LEDs, and a few other parts to complete this.
NeoPixel Thermometer Scarf: this NeoPixel Thermometer Scarf was made using an Arduino board, a DHT11 humidity and temperature sensor module, and LEDs.
Starry Night Dress: another colorful dress that lets you put on a show at night. The dress has a sparkly lighting effect.
DIY Walking Table: a cool table that you can move with a simple push. This guide shows you how to build yours.
3D Printed DNA Lamp: this beautiful lamp has multiple modes and puts on a light show. You will need an Arduino Uno, 1 x ATmega328P Microcontroller, and a few other parts to get started.
Transforming Tree 3D Printed Toy: you can always buy these toys or 3D print them yourself.
High Velocity Vortex Cannon: a fun project from NightHawkInLight that shows how to build your own vortex cannon capable of firing rings at a high speed.
Soda Bottle Flamethrower: want to build your own flamethrower? This guide shows you how.
What are your favorite DIY projects? Please share them here.
