Stackable Raspberry Pi add-on card aims for maximum I/O

On Kickstarter: a stackable “Raspberry Pi Mega-IO Expansion Card” for home automation offers a 12-bit DAC, 8x ADC, 8x relays, 8x opto-inputs, and 6x GPIO. A startup by Mihai Beffa called Sequent Microsystems has launched a Kickstarter campaign for a Raspberry Pi add-on card that is loaded with inputs, outputs,...