So I didn't actually read carefully enough to notice that 3216s don't use ISP anymore, so I need a UPDI programmer, and possibly want one that's HV-capable. And there's... a lot. There's options for DIY from a Nano, but I don't actually have a nano handy. There's a prebuilt board for doing it from a nano, but the tindie shop that sells it is out of stock and has no ETA. There's various designs and such posted for possible implementations, but I keep ending up finding dead ends. Apparently, the Atmel-ICE supports UPDI, but doesn't support the HV pulse before doing UPDI so it can't be used if you need that. Which I assume I usually wouldn't but maybe sometimes I would, I don't know.
So basically: I don't want to get a kit and solder SMDs myself, really, and I'd like a thing that can do UPDI programming of 3216s, preferably including support for the HV pulse thing in case I need that. Can someone point me to a thing I can order (so, not "not in stock, no ETA on becoming in stock again") that would be a working programmer for UPDI that works with avrdude? Because I'm just spinning my wheels here.
(Honestly, still probably recovering from 2020, which was A Lot.)