ADC+DAC Combo
Project description
Dependencies
This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
Installing from PyPI
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:
pip3 install adafruit-circuitpython-pcf8591
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-pcf8591
To install in a virtual environment in your current project:
mkdir project-name && cd project-name python3 -m venv .env source .env/bin/activate pip3 install adafruit-circuitpython-pcf8591
Usage Example
import time import board import adafruit_pcf8591.pcf8591 as PCF from adafruit_pcf8591.analog_in import AnalogIn from adafruit_pcf8591.analog_out import AnalogOut ############# AnalogOut & AnalogIn Example ########################## # # This example shows how to use the included AnalogIn and AnalogOut # classes to set the internal DAC to output a voltage and then measure # it with the first ADC channel. # # Wiring: # Connect the DAC output to the first ADC channel, in addition to the # normal power and I2C connections # ##################################################################### i2c = board.I2C() pcf = PCF.PCF8591(i2c) pcf_in_0 = AnalogIn(pcf, PCF.A0) pcf_out = AnalogOut(pcf, PCF.OUT) while True: print("Setting out to ", 65535) pcf_out.value = 65535 raw_value = pcf_in_0.value scaled_value = (raw_value / 65535) * pcf_in_0.reference_voltage print("Pin 0: %0.2fV" % (scaled_value)) print("") time.sleep(1)
Documentation
API documentation for this library can be found on Read the Docs.
For information on building library documentation, please check out this guide.
Contributing
Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.
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