If I'm looking for an ESP32 board with certain features (screen, rotary encoder, button, BMS, USB-C), how can I best find it? Is there a central website where I can just list all the criteria and it spits something out?
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There's this for the specific chip versions: https://products.espressif.com/api/user/file/Espressif_SoC_Product_Portfolio.pdf
As for dev boards, waveshare has a whole bunch with displays (both touch and non): https://www.waveshare.com/
Heltec has a bunch with integrated displays but is more focused on wireless stuff: https://heltec.org/
I know this doesn't fully answer your question but i suspect the best way to approach it would be to just connect a bunch of stuff to the gpio pins (rotary encoder, buttons, etc)
@nyastrid yeah I know I can connect crap to the pins, but it's supposed to be a device that can be held and used in one hand, so the more tightly integrated everything is, the better