PCF8591

This Python code is about a i2c -D/A &A/D- device, PCF8591 library using wiring pi on Rasbperry pi 3. Plese feel free to use !

Requirement

• Raspberry pi 3
• ubuntu16.04
• Python 3.x
• wiring pi
• PCF8591

Setting

i2c enable

$ sudo raspi-config

2. Choose Advanced Option
3. Enable i2c

Wiring

Pin Assign

PCF8591 --------- Raspberry pi3
SDA ------------- GPIO2/SDA1
SCL ------------- GPIO3/SCL1
VCC ------------- 3.3V
GND ------------- GND

Features

• Model number : PCF8591
• Voltage : DC2.5V-6V
• Analog Input Voltage : 0V-5V
• Interface : i2c
• A/D Resolution : 8bit

Usage

Basic Example

$ python3 PCF8591.py

D/A & A/D example

In this program, Raspberry pi read a variable register value(0-255) on PCF8591 default setting. And output to LED(located at lowwer in this picture) which is on PCF8591 using Digital analog converter.

$ python3 DA&ADexample.py

Licence

MIT

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• embedded
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Author

ShuDiamonds