Gigatron Hackers

Definitely agree. This second controller started misbehaving as well. I ended up building a little buffer with a spare 74HCT32 (quad OR gate, tied each gate's inputs together to improvise a buffer). I sent the clock and latch signals through that to the controller, and buffered the data line back th...

Received some "famiclone" controllers from AliExpress, and they *sort of* work. The Gigatron recognises input from these, but causes one of my monitors to go black when it's plugged in. Random unplugging/plugging back in can make it come back to life some of the time. So, an 74LS165 from e...

Happy to report that it was the controller! Everything is working properly.

It's not potted, but it doesn't seem to have any markings. IMG_20240221_195501.jpg I do like the custom "SECECT" button though, not seen that before :) Thanks for the links - I've got some alternative controllers on the way from AliExpress, but I'll go dig through my bits box and see if I'...

That's great, thank you for the information. It hadn't occurred to me that the scope might not be able to trigger! 160ns is a very short amount of time, and my scope is fairly old. I'll have another crack at it tonight and see if I can spot anything. All the chips are HC or HCT, there's no 74LS anyw...

Hi all, I've built a Gigatron, and the video and audio seems to be working fine: IMG_20240209_174156.jpg But, when I attach a controller (cheapy knock-off SNES controller wired to a 9-pin plug), the Gigatron acts like it's receiving lots of random inputs. Nothing I press makes any difference. I've p...

This was made by ordering PCBs from JLPCB in China, and sourcing all the bits from Farnell, Mouser and Digikey: IMG_20240207_213438.jpg It works! IMG_20240209_174156.jpg Sort of. I've hacked up a knock-off SNES controller to the 9 pin port. The Gigatron just acts like lots of random inputs are being...