This post presents information about the Custard Pi 7. This has relay and open collector outputs, 8 bit general purpose pins that can be programmed as inputs and outputs, 4 analogue inputs and 1 analogue output and an LCD interface. It also has a prototyping area which icludes layout for a SMT IC. All of this is provided using the I2C interface which leaves all the rest of the pins on the GPIO to be used for other purposes if required.
