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SF Innovations - Innovators in Electronics
The Downloads tab has sample Python code on using the 8 channel A to D on the Custard
The Custard Pi 3 provides the following benefits for the hobbyist intending to use
the GPIO on the Raspberry Pi.
1. Provision of 8 analogue inputs using an 8 channel 12 bit A to D chip connected
to the SPI bus (using MCP3208 IC)
2. Two Custard Pi 3As can be plugged into one Raspberry Pi to provide 16 analogue
inputs (using CE0 and CE1).
3. On board 2.5V reference for accuracy. Maximum analogue input is 2.5V per channel
in single ended mode.
4. The board simply plugs into the 26 way (Raspberry Pi A,B) or 40 way (Raspberry
Pi A+, B+, 2 or 3) GPIO connector. A power on LED fitted to the 3.3V rail to confirm
correct plug in.
5. The Raspberry Pi is buffered from accidental connection of a high voltage by
the use of the A to D chip
6. There are 8 screw terminals provided for easy connection to external electronics.
7. This plug-in Custard Pi uses a stacking connector, so that other boards have
access to the GPIO pins.
Sample Python Code for testing the 8 channel A to D
Custard Pi 3
Ready Built £18.00
Custard Pi 3 - User Instructions
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