[al_borland]

RetroUSB has adapters for those not looking for a project. I bought one of their NES adapters years ago.

https://www.retrousb.com/product_info.php?cPath=21&products_...

[TillE]

Raphnet adapters (designed by one guy in Canada) are the most popular option among serious speedrunners, if you want minimum latency.

Their equivalent product is currently out of stock: https://www.raphnet-tech.com/products/snes2usb_1player_adapt...

[micheljansen]

Kind of amazing that you can get a whole controller (including buttons etc.) for a fraction of the cost of an adapter. Probably a less authentic experience though: https://www.aliexpress.com/item/1005005998083106.html

[creesch]

Controllers that cheap generally are made of terrible creeky plastic, mushy buttons and generally poor assembly.

You can get decent retro styled USB controllers, but they will be a bit more expensive than this one.

[TheCleric]

Yeah I love the 8bitdo ones. But they're not inexpensive.

[JamesSwift]

People are always surprised that the controllers are the largest line item when building a retropie. You really want quality though, they make a big difference in that the dpads and the thumb sticks are both good.

[al_borland]

I picked up my NES controllers at Goodwill. Super cheap and the real thing.

[kevinsync]

I just got a RetroUSB Genesis adapter to use a 22-year-old Asciiware Power Clutch SG I had rotting in the basement for some JavaScript Gamepad API experiments. The adapter works great, feels good to breathe new life into an ancient peripheral!