this is old school but still good info to know Ham Radio Cheat Sheet
AN/PRC-152 - Google Search
Create Custom Sound Waveforms with 555 Timers
(C) The 14538B chip contains two monostable timers. Reset pins and falling-edge trigger pins must be tied to positive ower if they are not used. Unused rising-edge trigger pins must be grounded. Unused output pins must be left unconnected.
Arduino 8-bit Spectrograph project
Arduino 8-bit spectrograph project using a TCD1304 CCD.
How To: Make an HDTV Antenna and Get Free Channels
Make your own HDTV antennae
Lazer Işınlı Güneş Enerjisi Uydusu Geliyor
European Space Agency plans to launch a solar orbiter in 2017 that will come as close as 26 million miles to the Sun.
How the Internet Has Changed the World #Infographic
The Internet has completely revolutionized the way we shop. No longer do we have to leave the house and make a special journey to bricks and mortar stores
Home made benchtop power suppy
Perpetual Clock With Arduino
No matter what Deepak Chopra tells you, time is linear. Hopefully this clock is a little closer to reality than the circular ones we're all used to.