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： Raspberry Pi 5 D Raspberry Pi 5 Gen3 Servo PWM motor WP5320 WP5335 35/20KG.CM 180° PWM digital servo double ball bearings Raspberry Pi 5 DSI ESP32-S3 AI Voice Images Chat Robot Electronic PhotoPainter Frame E-Paper Ink Screen 7.3-inch E6 Full-Color Deepseek Development Board SpotPear Raspberry Pi Compute Module 5 PoE BASE A IO Board RJ45 For CM5 Lite/eMMC LCD Screen Driver Board RM520N GL 5G/4G/3G M.2 Moudle IoT EMBB For LTE-A/NSA/SA And GNSS For DFOTA /VoLTE For Quectel Raspberry Pi5 PCIe TO M.2 MINI Support Gen2 and Gen3 SSD Compatible 2230 2242 SpotPear Raspberry Pi DSI LCD Lichee-Tang-Primer-20K-FPGA-Unboxing Raspberry Pi 5 Raspberry Pi 8inch LCD 768x1024 Capacitive TouchScreen HDMI Display ESP32 C3 1.44inch LCD RS485 to CAN RV1103 SC3336 Milk-V Duo RJ45 Tutorial 2.8inch Capacitive TouchScreen LCD Display ST7789 CST328 240x320 For Arduino/Raspberry Pi/ESP32/Pico

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.