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  • VladoKW
    2020-08-06 11:14:56

    Product as description. Tested ok working as expected. AT comands firmware preloaded. I suppose micropython or other sketch can be used. Tested as it is to control a led or a relay through a web page. good product. Reccomend.

  • Edje
    2018-04-27 06:50:45

    To use the ESP01 with 5 volt, use an adaptor, see "Geekcreit® ESP8266 Serial Wi-Fi Wireless ESP-01 Adapter Module 3.3V 5V". This adapter is very handy. It has a voltage converter (5V to 3.3V) and level converters on board. When using the ESP01 with a temperature/humidity sensor (for example DHT22) I noticed that the 3.3V is sometimes too low for the DHT22. Reading is not stable. But there is a nice trick, to let the DHT22 work on 5 Volt! Use the TX pin at the adapter(!), for which the "level is converted"

  • Sergio
    2017-03-05 22:13:30

    Lo mas barato que puedes usar para comunicar tus microprocesadores por wifi, el modulo viene empacado en su empaque antiestatico sellado, y es muy fácil de programar, el uso por comandos AT te funciona para comunicación serial y si decides re-programarlo como sketch de arduino te permite usarlo para activar un relay sin la necesidad de usar la placa de arduino, perfecto para controlar equipos via wifi.

  • 2017-09-10 00:41:43

    I need this devices to connect my Arduino Uno to Internet, works perfect with serial port, need to set the speed to 9600 baudios, but with a simple AT Command, is easy to setup.

  • 2018-08-03 13:35:10

    it is a excellent product at very low price and working very nice on my IOT project. Packing of the product was good.

  • 2016-11-09 06:52:15

    arrivati perfettamente confezionati nella loro bustina di protezione versione con PCB grigio quindi 1MB di Flash Questo modulo supporta OTA per aggiornamento sketch via wireless maggiori info qui

  • 2018-04-28 16:05:35

    Well made and great value.

  • thepest
    2016-01-05 01:24:46

    Brilliant little chip for those simple switching devices or for data transfer over serial. Connects to standard BGN wifi. Easy to interface arduino or other similar microcontroller.

  • 2018-08-02 03:04:47

    Goed product

  • Keyur
    2017-09-08 12:23:01

    haven't tasted it yet. Not breadboard friendly but these tiny device can do a lot


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