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： SpotPear Spotpear Jetson Nano 3G module Luckfox Pico Max LCD1602 I2C Module PWM Adjustable backlight 3.3V/5V For Arduino/ Raspberry Pi/ Pico/ Jetson Nano/ ESP32 ESP32 Development Board WiFi+Bluetooth Ultra Low Power Dual Core ESP 32S ESP 32 Similar ESP8266 LCD Screen Driver Board ESP32-S3 Mini Arducam Raspberry Pi 5 PCIe To M.2 E KEY NGFF WIFI7 WIFI6 For BE200/AX210/AX200/RTL8822CE ESP32-S3 AI Voice Dialogue Robot Mechanical Dog Development Board Toy Tabletop Pet Deepseek 树莓派Pico 2 RP2350B-Plus-W开发板WIFI官方Radio Module 2 Milk-V Duo Information SpotPear Raspberry Pi Transparent Screen Serial UART Bus Servo ST3215 30KG.CM/19.5KG.CM Magnetic Encoder 360° High Precision And Large Torque E-Paper Raspberry Pi 5 PCIe to 4 Port 2.5G Gigabit Ethernet Adapter RJ45 Ports Raspberry Pi Camera 12MP Sony IMX708 autofocus HDR Module 3 Sensor Assembly NVIDIA

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.