Description:
PCA9685smbus2 0.0.6
Python-PCA9685
A probably definitely not-best-practices way to use the PCA9685 with an Orange Pi Zero 3.
If it works, it works.
Purpose
This library replaces adafruit/Adafruit_Python_PCA9685 for
the Orange Pi Zero 3 and presumably other single board computers that may or may not have reliable Blinka support.
Usage
This will set an SG90 micro servo plugged into channel 0 to spin to the -90° position.
from PCA9685_smbus2 import PCA9685
pwm = PCA9685.PCA9685() # defaults to using i2c-3 and address 0x40
pwm.set_pwm_freq(50) # set frequency to 50 Hz for SG90 servos
pwm.set_pwm(0, 0, 102) # channel 0, on time 0?, off time 102 (1 ms)
The on and off times above are the number of ticks on the PCA9685, which has a 12-bit resolution and therefore can range from 0 to 4096.
Tested on
This library has been tested on:
Orange Pi Zero 3
It likely supports any board in which the accessible I2C bus can be found by running ls /dev/i2c-*, since it relies on the smbus2 library for I2C interfacing.
Ensure that the relevant I2C interface has been enabled in sudo orangepi-config or sudo raspi-config (or whatever the case may be) for this to work right.
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
Customer Reviews
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