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Homemade simple ESP8266 burner

Overview

This project is a low-cost ESP8266 programmer. When I used 8266 for design, I found that the programming program was a problem. If the CH340 was onboard, it would increase the cost a lot. This chip is not used in many projects. If you use the method of burning first and then welding, you have to fly the 8266, which is also very inconvenient; if you reserve a burning interface, it sometimes takes up PCB space.

The burners sold by Moubaosou are all expensive at 60+ yuan, so I designed a simple burner. It only costs 10 yuan to make it myself.

The core of this project revolves around the CH340C chip. It uses serial port flow control and transistors to achieve one-click programming of 8266 firmware without plugging or removing the boot jumper pin, which is very convenient.

The upper programming interface and the lower one respectively support two types of packages. Be careful not to confuse them. The upper programming interface uses 90-degree bent pin headers. After buying it, you can manually bend it to 45 degrees. After soldering, the pins are Facing both sides of the board, do not solder backwards

Design Files

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Update:2024-11-22 01:34:40

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