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Parts: 1K 1-Wire EEPROM (DS2431)
The Maxim DS2431 1K EEPROM is 1-Wire device that adds storage to a project using a single microcontroller pin. We previously interfaced a 1-wire thermometer, but this EEPROM is slightly different...
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Parts: Precision humidity and temperature sensor (SHT1x/7x)
Sensirion’s SHTxx is a digitally interfaced humidity and temperature sensor. Accurate humidity measurements usually require careful analog design, but the SHTxx moves all that complicated stuff into a...
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Parts: AT keyboard
Last week we introduced a new version of the Bus Pirate universal serial interface tool. The last firmware update included an AT keyboard decoder library for both hardware versions. There’s a ton of...
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Parts: 133MHz-16.2kHz programmable oscillator (DS1077)
The DS1077 is a 5volt, 133MHz to 16kHz programmable clock source. The internal frequency divider is configured over a simple I2C interface, and the chip requires no external parts. Not bad for under...
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Old-School Video Switching Levels Up With Modern USB Control
Video effects and mixing are done digitally today, but it wasn’t always so. When analog ruled the video world, a big switch panel was key to effective results. VIdeo like this was the result of...
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The USB Protocol, Explained
If you can explain what a USB PID, a J state, a K state, and an SOF are, you can probably stop reading now. But if you don’t know or you want a refresher, you can spend 15 minutes watching [Sine Lab’s]...
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A Better Use For The AGP Slot, Decades Later
For a while around a quarter century ago PC motherboards came with a special slot, a little shorter than the PCI slots which ruled the roost back then, and offset from them further into the case. This...
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