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In HackSpace magazine issue 5 Limor Fried of Adafruit teaches us what it takes to make great hardware. We also find out everything there is to know about LEDs, convert a Dremel into a table saw and much more:
RPi ADC hat, built to work with the AuroraWatchNet remote sensor PCBs. The ADC isn't fitted here because the sensor boards already contain them (see www.flickr.com/photos/stevemarple/8517329264/in/album-721...). The logic-level translator for the I2C interface is needed, as well as the 5V to 9V DC-DC converter to power for remote sensor boards.
For source files see github.com/stevemarple/RPi_ADC_hat
It's PiDay tomorrow, in the USA, Micronesia and Belize, not the ROW 😀 That is, March 14th or 3/14.
In honour of this I produced a short video with a device showing a never ending string of pi digits. I can only remember 3.14159, or some people get by with 22/7
Bored moment, picture was created using Zerena Stacker (demo version) using 30 images.
Nikon D90, Tamron 90mm f2.8. Light from a desktop halogen lamp.
PP with GIMP.
This is one of the early Model Bs made in China (before manufacturing moved to South Wales), which I've owned since 2012. The module on top of the case, with the multicoloured ribbon cable, is a USB-serial interface - handy for hooking up a terminal.
Oh, and yes, I KNOW it's dusty... the little fella was sitting there idle for quite a while!