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.

PCF8591：
https://cdn.static.spotpear.com/uploads/picture/learn/raspberry-pi/raspberry-pi-hats/pi-sensor-board/pcf8591-220714.tar.gz

LED：
GPIO_Test.py

Schematic diagram：
https://cdn.static.spotpear.com/uploads/picture/learn/raspberry-pi/raspberry-pi-hats/rpi-all-gpio-test-board-b/rpi-all-gpio-test-board-b-14.png

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com

TAG： ESP32 Mini TV Milk V Aluminum Heatsink Raspberry Pi 5 Sound Card EG25-G Mini PCIe SIMCom Original 4G LTE Cat-4 Module Global Coverage GNSS PCI Express Mini Card TVBOX Kit Luckfox Pico Ultra And 4inch LCD RGB Captive TouchScreen Display Spotpear SpotPear HDMI to TTL ESP32 C3 1.44inch LCD Programmable Keyboard ESP32-C6 Development Board Raspberry Pi 3D Display Industrial UART USB TO 8CH RS485 Isolated Converter For 35mm standard rail and stacked installation RP2040 Camera Arduino Thermal imaging camera Milk-V Duo S Extend Partition on SD Card or eMMC DDSM115 Direct Drive Servo Motor All-In-One Design Hub RS485 Motor MPS2280D Raspberry Pi 5 PCIe to M.2 NVMe Dual SSD Adapter Board HAT Pi5 Double 2280 Raspberry Pi 5 Terminal

Pi ALL GPIO TEST BOARD (B) User Guide

PCF8591

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.

To：

Email(support)

Raspberry Pi PCF8591 expansion board LED GPIO IO test ADC/DCA Sensor Beginner board

Pi ALL GPIO TEST BOARD (B) User Guide

PCF8591

LED

Prepare

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

Running codeDownload GPIO_Test.py to raspberry pi.sudo python GPIO_Test.pyPhenomenonThe power indicator LED is always on, and the GPIO connection LED is turned on in turn, and then turned off in turn, continuously circulating.

To：

Email(support)

Raspberry Pi PCF8591 expansion board LED GPIO IO test ADC/DCA Sensor Beginner board

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.