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Arrived safe and sound. It comes preloaded with NodeMCU firmware, which allows you to directly connect to it via serial comms, but you will need a serial-FTDI adaptor or a dedicated ESP01 adaptor stick. With its original stock firmware you can effectivly use it as a wi-fi/serial port for MCU without wi-fi capacity. But it is still a ESP2866, at heart, all be it with limited pin options... and can be programmed using the arduino IDE. You will need a USB Adaptor/Link to program and interact with these easily, and even then it will need some modification of pulling IO0 to ground in order to upload you sketch. I made a simple modification to the ESP-01s Link V2.0 which I got from Banggood. By adding a simple switch to the GND and IO0 pin I can easily select programing mode or interact mode. So for simple, ESP2866 applications thse look really handy. If you new to ESP2866 go for somethng like a Mini D1, but for the more experiance user the is cheep fun to be had
Great product very well packaged
ótimo produto, chegou conforme prometido, só ainda nao os testei...mas acredito que esteja tudo certo.
Very innovative packaging. Received in 11 days from order. Very pleased. Will buy from this vendor again.
Seems good
very fast delivery, good quality, no test yet
Fast delivery, dirt cheap, me happy...
fast delivery, good product
seems good device didn't check them still
Good product