kd5exr's channel

My first homemade CNC almost ready for the electronics. Constructed out of MDF, angle aluminum with roller skate bearings for the rails and lots of...

In the late 60s, Dick Orkin conceived and wrote the Chickenman radio series. He was Public Affairs/Production Director at WCFL, the "Voice of Labor...

Using a Powertip 320x240 LCD (with Epson S1D13700 controller) connected to Arduino through an 8 bit I2C port expander (PCF8574) running at standard...

OK here it is. The follow up to the Easy to Build CNC Mill. Here it is engraving in Plexiglas and making a PC board

adafruit site update! we now have blog posts and flickr photos on our product pages! here's a video showing you what we've added!

ADTRX1-V1 + SDR-Kits USB Synthesizer Kit + sound blaster 16bits 48Khz

How green can you go when you're living in the desert? Check out the geodesic dome!

Inside the International Space Station, Expedition 25 commander Doug Wheelock gave a tour of the Russian segment of the orbiting complex, including...

This should only be performed by someone who has some knowledge of safe chemical handling practices. The plating solution and chemicals are toxic a...

How to use an N channel MOSFET to turn anything on and off.

Also, remember to put a 100k resistor between gate and ground if you want your FET to s...

Show your mom how to upload photos to the family by e-mail.