Design News Gadget Freak has a new how to on making an audio amplifier muting circuit – “Ever turned on your car stereo and BOOM! the woofers unexpectedly jumped out for one filling-loosening bass note? Just great, you’ve just been diagnosed with turn-on thump — either due to an amp that never had a muting […]
Petercd has an Instructable on using a 1mW laser pointer as a laser incidence meter – (used for testing the trueness of an aircraft wing). Link.
LOGIZTIX’s instructions for building your own electronic drums – “Building your own electronic drum pads may seem like a difficult task. The concepts behind electronic triggering are actually quite simple. A piezo acts much like a microphone. It picks up shock waves and passes them to your drum module to interpret. The trick is getting […]
Johntron writes – “Learn how to build your own gateway firewall using FreeBSD and old PC parts. The firewall will consist of the PF firewall, Snort IDS, various IPS applications, Squid proxy, and some intuitive web interfaces for auditing. The cost of this project should be between free and $200 depending on your resourcefulness. I […]
Ulrich writes – “Unfortunately, even entry-level CCD cameras that are actually built for astro imaging are beyond the reach of many amateurs. I faced the same problem. A QuickCam, however, costs approximately $70 if bought in a store, much less if you are buying a used camera at a flea market or through online auction […]
Jarod writes – “I never really understood the mentality of someone that overclocked there computer for actual every day use. Sure, I have overclocked the hell out of computers and had a lot of fun doing it. It can give you a great edge in the gamming circles. But this group of overclockers using refrigerants […]
Jos writes – “After some bad experiences with commercial fan speed controllers in the PCs in my home, I decided it would be easy to build a better one myself. Indeed, after a few evenings, I obtained these results….This proto implementation has components installed for two sensors, controlling two groups of fans. The switch is […]
