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Giant Fresnel Lens Deathray: an Experiment in Optics
Two Axis Star Tracker
Paper Mechanical Iris
The Algae Experiment: How to Build Your Own Algae Photo-bioreactor.
Design Sketching Class
Lesson 3: Drawing in 2D
Tools & Materials
Exploding Sun Lamp Design
600 Watt, 3d-printed, Halbach Array, Brushless DC Electric Motor
How to Make a Quality Crimped Joint
LED Firefly Earrings
8X8X8 3D RGB LED Cube
Wireless Remote Using 2.4 Ghz NRF24L01 : Simple Tutorial Using of NRF24L01 & Arduino
Long Range, 1.8km, Arduino to Arduino Wireless Communication With the HC-12.
Super Bright RGB LED Bike Wheels
SIMPLE Parallel/Series Select Switch
How to Make Homemade Kinetic Sand
Waterproof Pouches, Almost Free!
One Board Minimalist Chair
DIY LED Desk Lamp W/ Strip Lights
How to Build a Desk From Pallet Wood
Paracord Quick Deploy Bracelet
Paracord Belt With Carabiner Buckle
The Pallet Bible: Finding, Inspecting, and Dismantling Pallets
How to Re-Engineer Paper Back Into Wood
It probably isn't quite exactly a short circuit, given that the graphite has a little teensy bit of resistance (taking a value of around 30 ohms for a 6cm 0.7mm mechanical pencil lead, perhaps a rough estimate would be 1-5 ohms, judging from the current and voltage stated above). But it's true that lipo batteries are not toys; maybe a safer option/improvement would be a bunch of supercapacitors wired in series.Battery aside, I'm also wondering about the quality of the solder joints - seems to me that the joints wouldn't be particularly strong, but I don't have enough experience to judge based on the videos.
Easy Bread Croutons
Super flexible double curvature surface - laser cut plywood
Extreme Scissor Lift Shoes
Easy Store Flipboard
How to Build the Fastest Quadcopter in 3 Hours
How to Knit an Infinity Scarf in 3 Steps
Minimalist Steel Rocking Chair
Make Modular, Pocket-Sized Solar Panels
Urban Mushroom Farming
Grow Your Own Bioluminescent Algae
Bioluminescent Bacterial Lightbulb / Water Pollution Tester
The Light Fountain: a Bioluminescent Hourglass
Mushroom iPad Keyboard
DIY Universal Robot Gripper
The Stephanotis Steampunk Nixie Tube Bedside Companion.
High Precision Cardboard CNC Drawing Machine
Pencils + Arduino = Bright!
Little Portable Desk Lamp
3D Printer Part Recycling Grinder
The Forever Rechargeable VARIABLE Super Capacitor Battery !!!
Plasma Cutter From an Arc Lighter
Fireproof Carbon Foam from Pyrolysed Bread
Air Conditioner in 3 MINUTES / EASY Tutorials
Flat-Pack Wooden Chairs
Failed 3D Prints, And How To Fix Them
Desktop Air Purifier (Fume Extractor)
High Power LED Driver Circuits
Very Simple Oscillator
SpectrumLED- An INSANELY Bright 200 WATT Variable Spectrum LED Panel
GlowChips - A Simple and Cheap LED Lamp Unit
Schlieren Imaging: How to see air flow!
100W LED in PVC Flashlight
Archimedes' Weigh Scale
How to Build a Slayer Exciter
DC Boost Converter
Complete Motor guide for Robotics
Arduino Self-Balance Controller using DIGITAL IMU, at last!
Easy build self balancing electric skateboard
Guide to gyro and accelerometer with Arduino including Kalman filtering
The Complete Guide to RC Electronics
How to fix bad Chinese Arduino clones
12V-180kV: A Battery Powered Marx Generator (and introduction to electronics)
Hot Glue Matches
Super Magical Awesome Armbands of Light
Build A Fusion Reactor
Human Powered Phone charger
Body Heat Powered Flashlight