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Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces
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