I wish I had more interesting stuff to share. My final technical project for school has taken up 100% of my time, but it will all be over soon and I’ll be free to go back to esoteric nonsense.

Worked like a charm!
Thank you!

Iron temp is ~615F / 324C.

I've made sure to use lots of flux and tin my iron tip beforehand, but the solder just won't flow out of those holes.

I remember having this exact issue then getting bored and distracted and moving on.
Wishing you better luck lol.

IIRC it was the connector itself because the other board worked.

That is super likely to happen, so maybe I do need a different approach.
I'll probably end up back at 0603.

Unfortunately at the moment time and money are in short supply.
I definitely want to revisit it though.

I remember getting a bunch of parts to make my own, but I guess I got distracted.
The unmodified toaster oven remains in the closet.

Problem is that making proper software to handle reflow profiles was going to take too long and I couldn’t afford a premade controller.

There's probably a tonne of them out there, it's always just a matter of time, money, or both.
It feels like one of those things where to do it properly is going to cost $100+ in parts or hours of code plus $50 in parts.

That looks so cool but the price is far beyond what I can afford right now.
Someday...

All I have is a toaster oven, but I haven't gotten around to buying a reflow controller for it yet.

What a ride…
On one board I lifted the usb connector because I’m clumsy, and on the other the bootloader button wasn’t soldered properly on one side.
Seems to be working fine now :)

I'm kinda curious to see what that looks like.

I think I found it...
Somehow GND is not connected properly at the very least since the board powers up (partially) through USB only if the ground is connected to my programmer.

I think I'll have to remove the USB connector to debug this further; especially that weird grounding issue.

The pull-up should be internal; I copied the design from my breadboard setup, but clearly something is awry.
I think I’ll have to pull off the usb connector so I can get a logic analyzer in there.

Come to think of it, it didn’t power up through usb unless via hub…
Something weird is up.

I'm kicking myself for not adding test points for USB, and now it doesn't want to enumerate for either TinyUSB or the built-in USB bootloader.

I'm not really sure what to do in this situation; USB is kind of a big deal for what I want to do.
Any thoughts?

External oscillator is now working :D
I had to lift it up using hot air, disconnect the enable pad and leave it floating.
I guess it really was active high after all. Whoops.

Shouldn't I be seeing something from the out pin though?
My first guess was the pin labeled "tri-state" with no other documentation is actually active high instead of active low as in my design.

Or I could just lift it and use the internal oscillator, but still I was certain I got it right :/