Because a growing number of groups are publishing low cost FPGA solutions to multi-coincidence data taking problems, we are developing this page as a clearinghouse for such information.
Here is a list of links to other group's FPGA counting solutions
Coincidence Counter by Alan Stummer at U. of Toronto
Coincidence Counting Unit paper and recipe by David Branning of Trinity College and Mark Beck of Whitman College
Multichannel Counter by Baronti et al.
Coincidence Counter by Majeed and Zukarnain
Multi-Channel Coincidence Counter by Pooser, et al