Write a letter/number in the box. Press C to clear the writing area. Press E to wipe the database There is a confirmation question so you do not accidentally wipe the database. (I recommend you use this with turbo mode on.)
Thank you, rodrick535 for making the original project! I showed the scanner so you see the scanner scanning the writing area when not in turbo mode. The program runs much better in turbo mode, but is still usable in normal mode.