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  • 11/03/2020

    Consider I'm a beginner, I'm doing my first projects with these modules and the Arduino UNO board. I had to investigate a lot about how to use but in the end it worked perfectly. Connecting to my home's wifi worked at the first attempt and the Blynk setup showed it online inmediately, You must add a jumper in order to upload your sketches from Arduino IDE. The jumper is needed at reset time (when you insert on a pc, or power up), to enter the correct mode (running or flashing). To run the sketch you remove the jumper and re-insert on the USB port. I had some difficulties with the baud rate on the serial port. On Windows 10 I had to install a driver but then on the device (COM4 for me) properties I had to fiddle with the baud rate to make it match the module's. I love how tiny this module (ESP8266) is, keep in mind that it uses 3.3 V so you should put resistors when connecting Arduino UNO pins to the ESP8266. The USB adapter is great, works perfectly and avoids you to mess with Arduino UNO for uploading sketches or monitoring debug messages from the serial port. I chose this model to save money but it has a very very limited number of IO pins, so it's perfect to get wifi connectivity, specially on IoT projects. Spending a bit more you can get modules with many IO pins, if that's the requirement. The USB adapter is needed only when connecting to the pc (upload, debug) otherwise the module is independent, you have only to ensure a correct power supply (3.3V).

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  • 24/12/2019

    Unlike the shown images the package only contains the programmer and does NOT include an ESP-01, just the programmer board

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  • 08/09/2020

    muito bom gostei muito

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  • 01/06/2020

    Produto conforme. Envio mais rápido que o previsto.

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  • 04/11/2021

    very small micro contoller but work fine

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  • 19/08/2021

    Very good price, fast delivery, really nice programmer adapter.

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  • 18/06/2021

    Quick delivery, item as per description

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  • 22/04/2021

    Arrived in perfect condition. Thanks.

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  • 22/03/2021

    excellent product

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  • 23/02/2021

    Très utile pour de l’électronique

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