Forum Discussion
Altera_Forum
Honored Contributor
13 years agoI don't think there is any pin connection to the FPGA to control the contrast. Some LCD modules have a screw you can adjust for the contrast, some others use a special command on the parallel bus, and some use a pin. The the latter group is there is no connection to the FPGA (and it seems to be that way, according to the DE0 manual) then you may need to add a little circuit of your own to control it.
By the way this thread is about the Altera Cyclone III development board, which is different than the DE0.