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    PCB Design for ESP32 Stand alone module

    PCB Designing
    pcb esp32
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    • S
      Sharmila @kowshik1729 last edited by

      @kowshik1729 Yes i m programming the board first time using arduion. GPIO 0 is low all the time.

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      • kowshik1729
        kowshik1729 last edited by kowshik1729

        @Sharmila GPIO0 must not be low all the time. It must be held low only for a moment. Because GPIO0 is a boot strap option for choosing between UART download and normal operation. Please refer to the datasheet and search boot strap. And also can you please post a snap of your newly designed board please?

        S 2 Replies Last reply Reply Quote 1
        • S
          Sharmila @kowshik1729 last edited by Sharmila

          @kowshik1729 thank you for the hint ! i will check it . schematic picture of my board is given below

          (freesnippingtool.com_capture_20200721122206.png)

          saheen_palayi 1 Reply Last reply Reply Quote 1
          • S
            Sharmila @kowshik1729 last edited by

            @kowshik1729 sorry, gpio 0 is low only till it is programmed. after that this will disconnected.

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            • kowshik1729
              kowshik1729 last edited by

              @Sharmila Reviewed your schematics. Have the following doubts

              1. Is this a USB receptacle?

              4f585013-72f9-4ceb-bc72-8fa40ff32a36-image.png

              1. Didn't find any option where you can pull the GPIO0 low and bring it back to normal state. Did you have a jumper connection or button between GPIO0 and GND?
              1 Reply Last reply Reply Quote 0
              • S
                Sharmila last edited by

                1. no.
                2. we are using jumper for gpio 0th pin. please refer the below image.
                  freesnippingtool.com_capture_20200721200934.png
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                • saheen_palayi
                  saheen_palayi @Sharmila last edited by

                  This post is deleted!
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