I've got a big chunk of AA, AAA, and some C NiMh cells of varying ages... I'd love to be able to get a reading of how much charge they're still able to hold... My info on this is decades out of date,...
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I'm in the process of shfiting a board using Atmel's atiny13 to the atiny25. The at25 is causing lots of trouble. First hassle was getting the at25 to accept the "program enable" command. There was no...
We make a gadget that's powered by a 12 volt wart, and sometimes a user applies 24 and blows one up. We have a polyfuse and a 12 volt TVS and they sometimes fry the TVS. It's posssible that most any...
I want to process the signals of five electret condenser microphones with raspberry pi and i since the RPI has no audio inputs im thinking of using a sound card. Im looking for a sound card with five...
Hi! I just moved to an apartment and wanted to keep my radio in the bathroom, same as I did in the last place I lived. Only problem with this place is that the main electrical drop to the building is...
I'm thinking of making a Set Theory Clock display for a desk clock and using LEDs for its display. This needs a selection of rectangular red and yellow LEDs, both small stackable ones that could be...
I have some 7-segment displays I'd like to drive from a uP output...the segments have a common cathode. 5 volt digital outputs from the uP are available, and the red LED segments have a forward...
I am trying to create a project much like like a Marquee sign, I want to be able to control hundreds of LEDs from a set of chips. From my research I found the 74HC595 chip and using a bunch of these...
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