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  • 31/03/2021

    Great, perfect!

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  • 22/02/2021

    Szuper!

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  • 30/12/2020

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

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  • 13/03/2018

    Perfetto. Grazie

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  • 18/01/2021

    Compliant quality, no flaw

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  • 01/12/2020

    Don't forget the pullup resistor on GPIO0!

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  • 09/02/2018

    The board uses GPIO 0 to drive the relay. Unfortunately this means that this pin is held low on power up which puts the ESP01 into boot from serial link mode. To avoid this I added a 3.3K pull-up resistor to this pin. You also need to connect the CH_PD pin to +ve. The relay chatters on power up which appears unavoidable and may be a problem in some applications.

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  • 22/05/2018

    ESP01 does not boot with this module. One small modification and its resolved: solder an 10K resistor between GPIO0 and 3,3v. ESP01 boots up just fine, and no clicking relais on poweron. You also need to connect the CH_PD pin to +ve.

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  • 08/03/2019

    Tutto Ok

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  • 28/02/2018

    Ne fonctionne pas avec un esp01. Des modifications de circuits son necessaires pour etre utilise.

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