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An Arduino board based on the ATmega32u4 chip with built in USB HID functionality

3 votes
1 answer
214 views

Interfacing Arduino Leonardo with PCA8574AN

I'm trying to interface my Leonardo with a "Mindsensors Magic Wand" - 8 LEDs connected to a PCA8574AN chip. On the manufacturer's page, they say it's compatible with Arduino, however no instructions o …
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