Calculating resistance and power isn't hard... and, as David explains, knowing Ohm's Law and the Power Triangle can be darn useful when you're designing a project, sorting out power supply issues, or want to keep from burning your car down.
Just updated your iPhone? You'll find new features for Podcasts, News, Books, and TV, as well as important security improvements and fresh wallpapers. Find out what's new and changed on your iPhone with the iOS 17.5 update.
How To:
Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore
How To:
Turn Any Wall Portrait into Your Own Personal Scooby Dooish "Eye" Spy Surveillance System
How To:
Hack Your Electricity Meter
News:
Infrared LEDs Protect Your License Plate Number from Police Cams
How To:
Quick-N-Dirty Circuit Board Repair: How to Patch Faded or Corroded Traces with Pencil Lead
How To:
Customize Your Wireless Doorbell to Play Any Sounds You Want
How To:
Hack a WiFi USB Adapter for Better Reception
How To:
Build a Remote-Controlled Water Gun (Or Flamethrower!)
How To:
Make a PVC Hand Pump to Move Water, Compress Air, & Create Vacuum
How To:
DIY Stick Welder from Old Microwave Parts
How To:
Make a Super Cheap One-Way Check Valve
How To:
Hack a coin operated laundry machine
How To:
Zap and revive old NiCad batteries with a mig welder
How To:
Hack Smart Cards for satellite TVs
How To:
Make a sneaky, snake spy camera that records video
How To:
Make a Secret Car Compartment
How To:
Mod Your Old iPod 30-Pin Dock into a Bluetooth Speaker for Your iPhone 5
How To:
Make a Spot Welder for Cheap!
How To:
Turn a flatbed scanner into a camera
How To:
Hack Software & Run a Trial Program Forever
How To:
Fix Dead Lithium-Ion Batteries That Won't Hold a Charge Anymore
How To:
Turn Any Wall Portrait into Your Own Personal Scooby Dooish "Eye" Spy Surveillance System
How To:
Hack Your Electricity Meter
How To:
Quick-N-Dirty Circuit Board Repair: How to Patch Faded or Corroded Traces with Pencil Lead
News:
Infrared LEDs Protect Your License Plate Number from Police Cams
How To:
Customize Your Wireless Doorbell to Play Any Sounds You Want
How To:
Build a Remote-Controlled Water Gun (Or Flamethrower!)
How To:
Hack a WiFi USB Adapter for Better Reception
How To:
Make a PVC Hand Pump to Move Water, Compress Air, & Create Vacuum
How To:
Make a Super Cheap One-Way Check Valve
How To:
DIY Stick Welder from Old Microwave Parts
How To:
Hack a coin operated laundry machine
How To:
Make a Secret Car Compartment
How To:
Mod Your Old iPod 30-Pin Dock into a Bluetooth Speaker for Your iPhone 5
How To:
Make a sneaky, snake spy camera that records video
How To:
Zap and revive old NiCad batteries with a mig welder
How To:
Hack Smart Cards for satellite TVs
How To:
Make a Clothespin Pocket Pistol (AKA Mini Matchstick Gun)
Open Sesame:
Make Siri Open Your Garage Door via Raspberry Pi
How To:
Make a Spot Welder for Cheap!
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