This Instructable shows you how to build a lighter-based 12v battery trickle charger made from a laptop power supply, a LM317T regulator, and an Altoids tin (and some other misc components). Car Battery Charger from Spare Parts in Mint Tin
When I first got involved in digital electronics, it took me awhile to understand the concepts of pull-up and pull-down resistors and when to use up or down, and when to use internal (built in, programmable) resistors, and when to use actual, discrete component, resistors. On Youritronics (a name that will always make me wince), […]
Yet another vibrobot design, this one made out of a metal jar lid, motor, switch, and battery. Killer Jar Lid Robot is Coming For You!
Behold the cardboardy-retro-nessKamil‘s BeatSequencer v1.0. Though the front panel may have some mechanical stability issues, It reminds me of a miniaturized vintage computing giant. FYI – Those 24 LEDs are handled via Arduino’s shift function and the handy 74HC595 shift register chip.
MusicMiK shares his PCB creation process while working on a couple of phaser effects pedal boards. If you’re interested in making your own boards this will of course be of interest. Keep in mind, some of the techniques he demonstrates could be accomplished by relatively simpler means – such as using iron-on transfer or presensitized […]
Alan Parekh, of Hacked Gadgets, write: Using a DVD player screen, a rewired toy keyboard and toy laptop looks like it made a great start to this DIY Parallax Propeller Laptop.This project demonstrates the power of the Propeller microcontroller. Full documentation is available so that you could make your own. “This is a Propeller laptop […]
Simple yet effective, they come in a dizzying array of forms and materials. Vital to so many circuits for storage, timing, and filtration – the mighty capacitor! Download the m4v file or subscribe in iTunes In this installment of the MAKE presents series I explain – how to build a leyden jar, how the capacitor […]
