esp8266 is awesome (usb development board)

Note: Don’t build the board directly. The pcb is drawn wrongly. You forgot to clear out the space under the antenna. You can also solve the problem by connecting an external antenna. I don’t know why the schematic photo cannot be previewed here. You can open the project to view it or view it in the message area. pinout diagram

Project introduction

This project is a USB based on esp07 (because esp13 has a solder pad on the back, making it difficult to wire). It’s super awesome! Comes with USB-A interface made using PCB (

Tip: The USB thickness is about 2.4mm, but if it is too thick, it will cost extra, so it is recommended to drill 2mm and then add solder to thicken it, or add holes, and solder three 8mm pieces together)

The board comes with USB. Yes, it uses PCB for USB and comes with a serial port chip. Although it is small, it has all the functions it should have. There are 3 rows of pins on the board, each row has 5 holes. , including:

TX RX serial port (can also be used as normal IO, but it must be unplugged before uploading the program, otherwise the upload will fail)

IIC Communication

ADC

GPIO

5V and 3.3V power interface

It can drive basic servos and I2C devices. It can be said that although it is a small sparrow, it has all the internal organs! Using the ch340c serial port chip, plug it into the computer USB port, install the driver and you can use it directly.

BREAKING: I suddenly realized that I forgot to avoid the antenna part. . . . . . , now there are two options, one is to connect an external antenna to save trouble, the other is to redesign the pin header and wiring