This is sort of an indirect response to your question, but my experience is that the more complex and "featured" the dev board, the less consistent. For example, for boards with onboard 18650 battery holders and Liion charger, OLED display, and even onboard LEDs will be on different I/O ports. So my guidance would be to choose the simplest boards available, which is sort of antithetical to the "dev board" concept.
I've had pretty good luck with consistency on the "wemos esp8266 clone" boards, presumably because the Wemos D1 mini became very established with the 8266; search on amazon for "esp32 d1 mini." Here's a link: https://www.amazon.com/Bluetooth-Internet-Development-Functional-Ardu-ino/dp/B08MFCC4SR/?th=1 You mentioned soldering footprint, and that one's not super friendly; but it should be pretty consistent since the design tries to adhere to the original ESP8266 Wemos D1 Mini form factor. You mentioned Amazon specifically, so I assume you're prototyping? Thanks, Josh On Mon, Nov 15, 2021 at 11:38 AM Peter Soper via TriEmbed < [email protected]> wrote: > What esp32 dev board soldering footprint should be used on a board > combining this with other stuff where it has to be 1) obtainable reliably > 2) offer wifi and BT and 3) be cheap? I see many cheap on amazon. Are their > pinouts de facto standard? And finally, anybody got an Eagle lib for this > board? Or could you make and send me an .lbr for it? > Thanks in advance. > Pete > _______________________________________________ > Triangle, NC Embedded Computing mailing list > > To post message: [email protected] > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: http://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > [email protected]?subject=unsubscribe > >
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