Teyleten Robot ESP32-C3 Development Board ESP32 Supermini Development Board ESP32 Development Board WiFi Bluetooth 3pcs

Bought twice, if the board goes into connect/disconnect loop, unplug, hold boot push switch, plug it in again, not convenient to me, but still a good to have specially if you are concerned about current consumption, it's good in that criteria, I took the little LED resistor off, current consumption went down from 120 to only 42 microamps with _sleep command, if you try the same thing with Espressif dev kit the lowest you can get to was 210 microamps because of other components onboard

I had to do some significant googling to find a schematic that identified the pinout, but these work exceptionally well! The built-in antenna is great when you have minimal space to work with and the range is superb. The downside is that the pinout of these boards is NOT the same as with the XIAO ESP32C3, so you will need to plan your schematic/wiring accordingly, but I have used many different boards and knew beforehand that it wouldn’t be an exact drop-in replacement. These are a great value for the price and highly worth having a few on-hand!

The included pins are loose are the wrong size

Only two of the three I received worked and the deep-sleep was unreliable at best.=================================================================I am still messing with these. I got one to wake up reliably but I've turn off some GPIOs I need so we shall see.I do really like these because they use very little power in sleep!It is a work in progress.

These just work! Only issue is that they get really hot: bought some heat sinks from Amazon and put one on each side and now it’s a little cooler.

These achieve 89-95% efficiency between 5V and 20V input voltage with 3.3V output voltage with 0.5-1A.These have amazing idle/quiescent current so low I can't really measure it making them awesome for battery devices.However, the ripple voltage is insane, see attached photo for Vin=20V, Vout=3.3V, Iout=1A with a Vripple=400mv!!! And 2A output is even crazier despite 90% efficiency!

I'm a novice, but this literally isn't rocket science. Connect board, compile, it does a think. These boards have has so many random issues of error codes about being on the wrong port, detection issues, over heating. I'm pretty sure they're all dead. Sure that is a lot of processing power for your buck, but unless you're sure that you can get them working I'd pass.