Development board design based on ESP32-WROOM-32D (16MB)

Development board design based on ESP32-WROOM-32D (16MB)

• Designed based on ESP32-WROOM-32D (16MB)
• PCB overall size 36.8mm*63.5mm
• REST and BOOT dual buttons
• USB powered 5V POWRLED indicator light
• I2C independent OLED 4P row

On August 12, 2020, I completed the power-on debugging according to the guidance of friends in the group. I flashed the microPython firmware
and printed hello World!

Thank you very much Xiaole here

The firmware has been uploaded as an attachment.
The address is: http://www.micropython.org/download/esp32/Reference
tutorial: https://www.cnblogs.com/yafengabc/p/8681380.html
Maybe I am too new to this Going around a lot in one place

esptool.py --chip esp32 --port /dev/ttyUSB0 erase_flash

Under windows, /dev/ttyUSB0 here should be replaced with the port number COM of the board...

esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 esp32-20190125-v1.10.bin

Similarly, it needs to be replaced with the port number here
. Then esp32-20190125-v1.10.bin needs to be replaced with the folder address of the firmware, such as D:esp32esp32-idf4-20191220-v1.12.bin.

On August 11, 2020, I finally finished soldering the board today, but it almost failed.

I finally got the board on August 8, 2020. In the afternoon, I cut the part corresponding to the module antenna with a tool.

August 2, 2020 afternoon 1. Talk about PCB drawing completion 2. Organize BOM list

On the evening of August 1, 2020 1. After discussing with classmates in the group, I decided to add a 4P row of seats as the OLED interface. I searched for the corresponding OLED interface circuit on the Internet and drew the schematic diagram. 2. Completed the OLED schematic diagram and converted it. For PCB, then complete the layout of all components and complete the local wiring

On the evening of July 31, 2020 1. I started drawing the schematic diagram today. I drew it according to the schematic diagram given in the official information, and the required components were confirmed during the schematic diagram drawing process.

2. Transfer the schematic to PCB, make a rough layout, and roughly place the components

On the evening of July 30, 2020, after a friend’s recommendation, I decided to make an ESP32 development board. While practicing the drawing board, prepare in advance for learning programming later. Today, let’s browse and become familiar with ESP32 and create a project.