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For general questions about the GPIO pins, do not use this tag; use [gpio]. This tag is for the npm (node.js package manager) module for controlling the GPIO pins on the Pi using JavaScript. It is unrelated to the pigpio C/Python library. There is also a dynamic C library to control Raspberry Pi GPIO channels https://github.com/Milliways2/pi-gpio.git

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Using the ds18b20, why are you limited on pins you can use? GPIO4 only one that seems to work [closed]

This is in reference to this thread where they are all using GPIO4. I've got A0 of an arduino going into an arduino nano (using firmata) and then into GPIO4 since it appears to be the only pin that'l …
Dave Brunner's user avatar