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esp32 development board wroom_32D_zgf_20220427

Overview

The main controller used is esp32-wroom-32E, which costs 13-14 yuan on tb. The
USB model is type-c, which is more commonly used now, instead of the traditional mini-USB, but it is really troublesome to solder
. The USB to serial port uses ch340c, which costs two yuan each and is not expensive.
There are a few issues that need to be mentioned here. The EN pin must not be floating.
IO0 is pulled up by default, and IO2 is pulled down by default. After testing, these two pins can be downloaded without external pull-up and pull-down.
The solution has been tested by board welding and burning. There is no problem and it can be downloaded and used directly. The attachment is a simple blink video.

Design Files

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Update:2025-06-19 22:44:42

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