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

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

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

ótimo produto muito bem embalado

ótimo produto muito bem embalado

ótimo produto muito bem embalado

ótimo produto, chegou conforme prometido, só ainda nao os testei...mas acredito que esteja tudo certo.

ótimo produto, chegou conforme prometido, só ainda nao os testei...mas acredito que esteja tudo certo.

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.

Very innovative packaging. Received in 11 days from order. Very pleased. Will buy from this vendor again.

Very innovative packaging. Received in 11 days from order. Very pleased. Will buy from this vendor again.

Seems good

Seems good

Seems good

very fast delivery, good quality, no test yet

very fast delivery, good quality, no test yet

very fast delivery, good quality, no test yet

Fast delivery, dirt cheap, me happy...

Fast delivery, dirt cheap, me happy...

Fast delivery, dirt cheap, me happy...

fast delivery, good product

fast delivery, good product

fast delivery, good product

seems good device didn't check them still

seems good device didn't check them still

seems good device didn't check them still

Bon produit

Bon produit

Bon produit