Jean-Paul, Thanks, for the complement. Please watch the language. The pictures=20 are posted here: https://groups.yahoo.com/neo/groups/TekScopes/photos/albums/147414244 Because I do circuit designs with op-amps. rich! On 7/25/2014 10:59 AM, Jean-Paul Louis wrote: > Hello Rich, > > Nice work description. But I am curious about the 4 different voltages th= at you use. > Why in hell do you need +/-5V AND +/-12V? > Where did you upload the pictures? > > Jean-Paul > AC9GH > > On Jul 25, 2014, at 11:14 AM, Richard R. Pope wr= ote: > >> Hello all, >> I just posted some pictures showing my lab and the frequency >> counter that I am building. Keep in mind that this is just the >> prototyping stage. I complete a section, build a test setup, and then go >> on to the next section. The display board that is mounted to the larger >> board is completed. The larger board is just a test fixture that I will >> disassemble once I am finished with it. >> --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .