This video upscaler is not bad for the price: Gonbes GBS8200 – Fabozzi’s Compiled Knowledge
To unlock more features and unlock connecting to it via WiFi to make video adjustments you can follow this nice video:
GBS Control: Installation & Overview
The ESP8266 I bought is a 12-E NodeMCU so for the correct pinout go here:
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
Here is a picture and explanation of the locations to solder:
Once that was done I followed the software part here:
Everything went well from watching the video except it would not upload the sketch to the ESP8266. Turns out the drivers were not installed for the CP210x USB to UART bridge. I went here to get the driver: CP210x USB to UART Bridge VCP Drivers – Silicon Labs
After installation the files uploaded fine, and I had a working modified GBS8200 video upscaler!
In the end it did not work for my NFL Blitz 99 arcade machine. There is still some sort of syncing compatibility issue related to the H or V sync from my board. When I connected the VGA port of my laptop it worked without issue, and I could browse to the ESP8266 using the IP 192.168.4.1.
