Yiynova MSP19U+ VGA Pinout Diagram

My sister loves drawing digital artwork. (check out her amazing artwork here!) Sadly she always seems to have the worst luck with computers. Back when she used to use her Wacom Bamboo Fun drawing tablet, I soldered on a new USB cable after she wore out the original. (Which I had to replace a second time for the same thing.) After she was able to save up enough money, she bought herself a Yiynova MSP19U+ drawing tablet monitor. She’s been using it for the last 2 years and loves it, the ability to see your hand while drawing makes it more natural for her, like actual drawing on pencil and paper.

Well, as fate would have it, she was able to wear out the VGA cable that’s built into the monitor. Her computer (running Windows 7 Pro 64bit,) could not determine the model of the monitor, and forced a generic resolution (1024×768) instead of its native resolution. (1440×900.) I was familiar enough with the VGA spec to know that there are a couple pins in a VGA cable that let the monitor communicate with the computer and inform it of its model and such. I figured that these wires inside the VGA cable were the culprits, as she noticed that sometimes she could get it to work again by wiggling the cable around the area where it comes out of the monitor.




Using a multimeter to test the resistance (or continuity) between the pins on each end, I was able to determine the pinout of the connector that goes into the tablet monitor. (As shown in the adapted diagram above.) This also allowed me to determine which wires were broken, and sure enough pins 12 and 15 (SDA and SCL respectively,) had no continuity. I was able to remove the offending areas of the white and red wires, and replace them with some solid core wrapping wire. The monitor now correctly reports its model and native resolution. Sister is once again a happy artist!

Old Console Repairs

Been making some extra cash by repairing old game consoles for Classics & Oddities in Longview. Cory (the owner,) had 5 broken Sega Game Gears all needing capacitors replaced. It might be tedious work, but seeing a device restored to functional use always makes me happy.

Making modchips for the Nintendo GameCube (XenoGC Clones)

Been taking advantage of “wrapping wire” and protoboards that I bought using Christmas gift cards from last month.

Modded a gamecube with a homemade modchip, this lets it play backups as well as “homebrew” software such as emulators.

I also built a microcontroller programming “shield” to replace the mess of wires and breadboard I had been using previously. Now I can easily load programs onto microcontrollers without having to worry about which wire went where, and can free up the breadboard for future projects.

Numbers and Logic and Wires, oh my!

Ended up arriving at school an hour early by mistake. So I went in the lab to finish up wiring this week’s project.

Takes two 2-bit variables (the two numbers shown in the bottom left,) and the sum is displayed on top. There are three sub-circuits shown, one group of chips controls the input displays, the second group controls the adding, and the third group controls the output display.