About Us Knowledge Base Community Forum Electronics Toolbox FAQ Shipping & Delivery

Knowledge Base

The AB Electronics UK Knowledge Base provides support solutions, tutorials and troubleshooting guides.

Knowledge Base

Expander Pi

Expander Pi - IO Port LED binary counter

In this tutorial we will make a binary counter using 8 LEDs.  For this you will need your Raspberry Pi, an Expander Pi, 8 red LEDs and 8 200R resistors. We will use the AB Electronics python library to talk to the Expander Pi, to download the library visit our Python Library and...

Expander Pi - Reading IO Inputs

In this tutorial we will read from the inputs on the IO device on your Expander Pi and display the inputs status on the console. For this you will need your Raspberry Pi, an Expander Pi and up to 16 single pole switches and connecting wire. We will use the AB Electronics python library to...

Realtime Clock on the Expander Pi

The Expander Pi uses the same real time clock as the RTC Pi and you can use the following tutorials for using the RTC with your Raspberry Pi. RTC Pi on a Raspberry Pi Raspbian Jessie and Stretch RTC Pi on a Raspberry Pi with Raspbian wheezy RTC Pi storing double values in RTC memory RTC...

ADC Reading Tutorial on the Expander Pi

This demo shows how to read from the ADC input channels on the Expander Pi With your Raspberry Pi switched off install the Expander Pi on the Raspberry Pi GPIO port and insert a CR2032 coin battery into the battery holder.  Using the Expander Pi without a battery installed may damage the...

DAC Outputs Tutorial on the Expander Pi

This demo shows how to write to the DAC output channels on the Expander Pi to set the output voltage levels. This demo will generate a 1.5V p-p square wave at 1Hz on channel 1 With your Raspberry Pi switched off install the Expander Pi on the Raspberry Pi GPIO port and insert a CR2032 coin...