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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
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!