/products/raspberry-pi/b/blog/posts/custard-pi-7---hardware-hackers-interface-for-the-raspberry-piThis is a hardware hackers dream with a host of features built in as shown below. 2 Relay outputs4 Open Collector outputs2 Built in Switches8 General Purpose Digital I/O4 Analogue inputs1 Analogue output16 pin LCD Interface LED indica...en-USTelligent Community 12