A line is on every 68.4Hz for 2ms and has no flicker. It is consuming around an amp continually.
The biggest issue I have is the TIP102s aren't fully on. The Arduino is putting out a stable 5v but I'm seeing a 2v drop from source to drain. This is causing heat issues and making the display dim.
Getting anything useful to display required tweaking of bitfields in the Arduino software, which is inconvenient. I wrote some software to help with this in HTML/JS (See bottom of post). It outputs some C like data at the end that I can simply paste into the Arduino suite with no real effort. By far the thing that took the most time was creating the character palette. I couldn't source a font that was both free and seven pixels tall.
Right now the only way to update the display is to recompile and reprogram the Arduino. It should be really easy to send this data over UART or even tcp/ip and will be my next step. I'm concerned that taking the time to do this additional processing will cause me to miss entire rows. But I may be incorrect, if I can fit all my processing into 2ms windows there shouldn't be an issue. Which should be possible, 2ms is a long time.
I'd also like to create some simple PCBs so this isn't just a huge jumble of wires and hopefully minimise the crazy crosstalk I'm getting.
Really simple Arduino source. (HTML | TXT)
HTML/JS Application. Also embedded below, so excuse the table-breaking width.
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