I bought this board after searching for an affordable low power consumption board during deep sleep. This test was promising: https://github.com/grillbaer/esp32-power-consumption-test, and the board delivers. With 5.2V of battery input I get 53mA wake and 10.6uA deep sleep consumption. With an efficient external 3.3 V power supply also purchased here at tindie (https://www.tindie.com/products/makertronika-labs/olmboard-tps62840-ulp-buck-converter-60na-iq/) I could get even better 37.3mA wake and 8.3uA deep sleep current. With these values a battery powered device is certainly feasible.
The RGB LEDs are nice to have, and the board is breadboard-friendly. The fonts of the silk are too small for my eyes, I just have a look at the pinout diagram and count pins ;) A good board for a great price! Maybe a LiPo connection with charger would be a great addon, if you can maintain the low power consumption.
The ESP22 board was delivered very fast. The boards are just perfect and the idea to integrate two 2 RGB LEDs directly on the board is just brilliant. All the boards I received work without flaw :-). I would definitely buy more products from this provider!
This is my first time using an ESP32 board and getting this little dev board working couldn't be easier. The install IDE instructions are easy to follow, it came with a schematic and led blink example sketch. I've installed it in IDE v1.8.0 and everything compiled and uploaded fine. No need to press any buttons on the board. Shipping was surprisingly fast and inexpensive as well.
I am using this adapter to program and talk to Moteinos via USB serial. It works great. The voltage selection switch is nice although I have not had a need to change it from its default setting.
A minor "by-design" issue that I ran into is that one should not leave the adapter connected to a target device (like the Moteino) if the device is in-service and powered by a separate source -- in that case there will be a voltage conflict on the Vout pin of the adapter (the adapter puts its own voltage on this pin, and the target also puts a voltage, which most likely will be different, on the same pin). To avoid this problem and so one could leave the adapter connected while the target is in-service it would be nice if the adapter had a jumper or switch so one can manually kill power on the Vout pin. There are other solutions, like bending the Vout pin, or creating a small adapter that leaves out the Vout pin, so this is not a major problem.
The pins of the manually soldered female header were left too long on the other side of the PCB, causing the pins to interfere with my circuit. I trimmed them myself but it'd be good if the maker ships the adapter with the pins already trimmed.
Overall, I think that this is a good product and at a good price. I am happy I bought it.