Kits

Build a frequency counter

Build a frequency counter

This frequency counter kit is called “FunCount” and can measure frequencies from 1Hz to over 2MHz. The kit uses an ATTiny2313 Atmel Microcontroller and can also be used as an AVR Development board with an LCD. Pretty cool kit, that also happens to be on sale. FunCount Kit via Hacked Gadgets

Mr Lee now fetches $

Mr Lee now fetches $

Ladyada writes– If only all cats could make money for their owners! ;) You may remember “Mr Lee” the cat who was outfitted with a matchbook-camera that would allow the owner to ’see what the cat saw’. It was quite a popular website a few months ago, and it seems that a business opportunity presented […]

Homebrew parametric speaker

Homebrew parametric speaker

If you’re familiar with the audio spotlight, then you now how very awesome narrow beam ultrasonic speaker devices can be. They can project a sound efficiently over long distances without spreading like common speakers. One can essentially walk into the ultrasonic line-of-fire and begin to hear sound abruptly – certainly an interesting effect. Though not […]