A few months back I provided you the Easy-phi project, which aims at building a simple, affordable however intelligent rack-based open hardware/software platform for hobbyists. With easy-phi, you just have a rack to which you add cards (like the one shown above) that perform the functions you want.
Recently my team completed testing our FPGA-based discriminator or “universal input” if you prefer. As easy-phi cards utilize a well-defined electrical signal to interact with each other, we needed to make a card that would equate the different type of electrical signals from the outside, in addition to perform lots of other functions. It was therefore designed to have a 100MHz input bandwidth with an AC/DC coupled 50 ohm/high impedance input stage (x2) as well as 4 easy-phi outputs. For this module, we chosen the (old) spartan3-an FPGA to perform the different logic functions that may be needed by the final individuals (high speed counter, OR/XOR/AND, pulse creation,…). utilizing the cortex-m3 microcontroller present on the board, it may be quickly reconfigured at will. All style resources may be discovered on our Github, as well as you can always have a look at our official website.