Pi ALL GPIO TEST BOARD (B) User Guide

PCF8591

Test image version: 2022-04-04-raspios-bullseye-armhf.img Raspberry pi 4B

Prepare

Enable I2C

sudo nano /boot/config.txt


Ensure that I2C is on, and then restart the system.

sudo reboot

After restart, address 48 can be detected by I2C address detection command.

i2cdetect -y 1


connection

Ensure that jumper caps are connected to PCF.


Running code

Download sample code pcf8591

cd pcf8591/

sudo python pcf8591_adc.py


Phenomenon

4-channel print AD value

DAC

Running code

sudo python pcf8591_dac.py


Phenomenon

The LED lamp changes with the output value of DAC, and the brightness changes.


LED

Prepare

connection

Make sure that the jumper caps are connected to the LED.



Running code




Download GPIO_Test.py to raspberry pi.


sudo python GPIO_Test.py

Phenomenon

The power indicator LED is always on, and the GPIO connection LED is turned on in turn, and then turned off in turn, continuously circulating.

Price: $14.9
Part Number: Pi ALL GPIO TEST BOARD (B)
Brand: Spotpear
SKU: 0102152