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node.jsiotgpio
WOOJIN KIM
WOOJIN KIM

Reputation: 1

how can i get a same result gpio.input at nodejs?

I figured out that gpio.input & gpio.output are only supported in py. How can I get a same result in nodejs? read only return 0,1 which is useless in photocell sensor in raspberry pi.

Upvotes: 0

Views: 118

Answers (1)

Louis Ledoux
Louis Ledoux

Reputation: 11

you might have a look at this node module package : rpi-gpio.

But unfortunatly for you, the only value you will receive from this input will be either 0 or 1 because you can not perform analog reading on GPIO on RPi. A solution is to buy a little module which can read analog and then write it in a serial communication to read it with RPi.

If you don't want to buy that kind of module there is a tricks which use a capacitor and then computes the time between two ones to know the value between 0 and 1024 for example. This article explains that well : capacitor analog

Upvotes: 1

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