U-Disp - The Digg (tm) display (Open Source)

Step 13 Testing - One display

I inserted the microcontroller that I used for the prototype and plugged in the USB cable to power the board and was greeted by a lot of jumbled digits and flashing things.

Ok, so it does something, but not correctly.... After a bit of headscratching I realized that I had changed the order of the output pins on the microcontroller to make the layout nicer, so I fixed the code of the firmware and downloaded it into the microcontroller and applied power again. This time everything looked perfect.

I started a terminal emulator and sent a few hardcoded commands to the display which dutifully showed it on the displays.

I'm still really amazed that I haven't encountered any major (or even minor) screwups this far...