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tino / pyFirmata

Python interface for the Firmata (http://firmata.org/) protocol. It is compliant with Firmata 2.1. Any help with updating to 2.2 is welcome. The Capability Query is implemented, but the Pin State Query feature not yet.
MIT License
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Read PWM signal? #91

Open jgoncalocouto opened 4 years ago

jgoncalocouto commented 4 years ago

Hello,

I'm very green on arduino, I just know the very basics. Because python is more easy for me I started using pyfirmata to control arduino.

Having that said, it can be my incompetence, but I've search everywhere and couldn't find an answer. I would like to measure frequency with the arduino, in order to get feedback of the rotational speed from a fan. I'm just clueless on how to do it with pyfirmata. I thought it could be done by setting a digital pin to pwm mode and then perform a read operation but it doesn't work. Also, I tried to just read digital input with very small time steps and then calculate the duty cycle over a larger period of time by counting the ones and the zeros, but also no good results.

Is there a way to do this with pyfirmata or should I just learn the "arduino language"?

myselfgautham commented 3 months ago

Bro You Cant Read A PWM Signal But There Is A Similar Thing To It Called Analog Signals Analog Signal Have 6 Pins I Believe On The Arduino (A0 A1 A2 ETC)