ESP32 Forum

Posted: **Sun Dec 18, 2022 7:30 pm**

Hi all,

I normally use an 'ESP32 Dev Kit C' for my projects. This time I want to create a PCB and solder an ESP32-Wroom-32D chip direct to it. This will make my project much smaller.

So, I have bought 5 of the below:

: ESP32.jpg (48.28 KiB) Viewed 1497 times

Then, I made the below circuit as I think it is the most basic that I need to be able to upload code.

: ESP32-Minimum.jpg (476.58 KiB) Viewed 1497 times

The USB TTL Interface has a built-in AMS1117 3.3v regulator in it.

Can people please tell me if the above circuit will work.

Many thanks
Alan

Posted: **Mon Dec 19, 2022 2:03 am**

You need at least a power-on reset RC network on your EN pin. Given that you have an 10K pullup already, simply add an 1uF between ground and EN and that should be fixed.

Posted: **Mon Dec 19, 2022 7:53 am**

Hi @ESP_Sprite, thank you for your help. So, how is the below now?

: ESP32(1).jpg (421.18 KiB) Viewed 1420 times

Many thanks
Alan

ESP32 Forum

Minimum ESP32 circuit required for runtime

Minimum ESP32 circuit required for runtime

Re: Minimum ESP32 circuit required for runtime

Re: Minimum ESP32 circuit required for runtime