The AB Electronics UK Knowledge Base provides support solutions, tutorials and troubleshooting guides.
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Raspberry Pi
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- I2C Part 1 - Introducing I2C
- I2C Part 2 - Enabling I2C on the Raspberry Pi
- I2C Part 3 - I2C tools in Linux
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IO Pi Plus
- IO Pi Plus FAQ
- IO Pi Plus Tutorial 1 - The Blinking LED
- IO Pi Plus Tutorial 2 - Push the Button
- IO Pi Plus Tutorial 3 - Introducing Interrupts
- IO Pi Plus Tutorial 4 - More Interrupts
- IO Pi Plus Tutorial - MQTT Reading the Ports
- IO Pi Plus with Raspberry Pi Pico
- IO Pi Plus Tutorial - MQTT Control
- Driving Relays or Higher Loads with the IO Pi Plus
- 16 Channel Opto-Isolated Input Board
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Home Assistant
- Using 1 Wire with Home Assistant and the Raspberry Pi OS
- Using I2C Devices on the Raspberry Pi with Home Assistant
- Using the ADC Differential Pi with Home Assistant on the Raspberry Pi
- Using the ADC Pi with Home Assistant on the Raspberry Pi
- Using the IO Pi Plus with Home Assistant on the Raspberry Pi
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Legacy Products
- ADC DAC Pi (Discontinued)
- ADC Pi (Discontinued)
- Buffer Pi - Legacy Product
- Com Pi (Discontinued)
- Delta-Sigma Pi (Discontinued)
- Expander Pi (Discontinued)
- IO Pi (Discontinued)
- IO Pi Plus 1.0 (Discontinued)
- IO Pi Zero (Discontinued)
- Logic Level Converter (Discontinued)
- RTC Alarm Pi (Discontinued)
- RTC Pi (Discontinued)
- Serial Pi (Discontinued)
- 1 Wire Pi (Discontinued)
- 1 Wire Pi Plus 1.0 (Discontinued)
- Other Supported Platforms
Serial Pi (Discontinued)
Serial Pi RS232 Development board
This item has been replaced with the Serial Pi Plus and Serial Pi Zero
- RS232 Master Port.
- Control the Raspberry Pi over RS232 or connect to external serial accessories.
- Stackable with other Raspberry Pi accessory boards.
- Mounting hole for use with the AB Electronics UK mounting kit (sold separately)
The Serial Pi is a communication board supporting the RS232 serial protocol.
Please note that you can only use one Serial Pi board on a Raspberry Pi.
Introduction:
The RS232 port is connected to the UART port on the Raspberry Pi using a MAX3232 interface. The MAX3232 IC converts the 3.3V UART port to RS232 voltages, allowing communication with RS232 compatible devices over a DB9 serial cable. Using a null-modem cable, the board allows terminal access with Linux on the Raspberry Pi using a terminal application. The RS232 port can be accessed through the DB9 port or the solder points on the PCB.
An array of 2.54mm pitch holes with 3.3V and 5V connections are also provided on the PCB, allowing you to build additional circuits on the board.
Datasheets
Schematic
Click to View the schematic PDF.
Mechanical Drawings
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Sample Code & Tutorials
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