SF Innovations

Modules for the Raspberry Pi and Home Automation

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Custard Pi range of accessories for the Raspberry Pi

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Custard Pi 2 - Analogue and digital I/O for the Raspberry Pi

(Compatible with models A, A+, B, B+, 2 and 3)


The Downloads tab has sample Python code on using the A to D and the D to A on the Custard Pi 2.


The Custard Pi 2 provides the following benefits for the hobbyist intending to use the GPIO.


1.    Provision of the following I/O.


4 open-collector digital outputs

4 buffered digital inputs

2 x 12 bit analogue outputs

2 x 12 bit analogue inputs


2     The board simply plugs into the 26 way (Raspberry Pi A,B) or 40 way (Raspberry Pi A+, B+, 2 or 3) GPIO connector. Two power on LEDs are fitted to the 3.3V and 5V rails to confirm correct plug in.


3.   All the pins on the Pi are protected from accidental connection of a high voltage.


4. There are screw terminals provided for easy connection to external electronics: 4 digital outputs, 4 digital inputs, 2 analogue outputs, 2 analogue inputs and power.


5.  There are no screw terminal connection to the 6 pins that are not in use. This prevents accidental connection to them.


6.  The 3.3 V and 5 V voltage rails have  0.1 Amp multi-fuses fitted. These stop too much current from being taken from the Raspberry Pi. The fuses reset automatically.


7.  This plug-in Custard Pi uses a stacking connector, so that other boards have access to the GPIO pins.





Custard Pi 2

Instructional Slideshow

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Custard Pi 2

Ready Built



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Custard Pi 2 - User Instructions

Custard Pi 2 - compatible with 40 pin GPIO
Custard Pi 2 plugs into 40 pin
connector on Rpi A+, B+, 2. & 3