Hello,This should be the final version for the PECS board on GITHUB.

https://github.com/awall9999/ScottCom

Pecs board_V1.4

• By holding button 1,2,3 or 4 for 2sec, the power LED goes out.That means you have successfully changed the volume, where 1 is the minimum volume and 4 is the maximum volume.
• Selecting a folder is now possible via software. If you keep key 16 pressed for 5 seconds, the power LED goes out. You are now in programming mode. By pressing a key from 1 to 16, you select the corresponding folder.