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ESP8266 Downloader

Overview

This is a clone of https://oshwhub.com/luoxing/esp8266-shao-lu-qi

. 1. I had a leftover CH340G from a few years ago, and I added a crystal oscillator circuit. It works with both CH340C and CH340G.
2. Since it's a clone, I didn't bother changing the original resistors and capacitors; they're in 0805 packages, so I just used 0603 capacitors.
3. I added TX/RX indicator lights, which can be soldered with different colored LEDs as needed. I also replaced two buttons with better-looking tactile switches (which I actually had on hand).
4. Compared to the original open-source address, all the added components are in 0603 packages.
5. The SIM card ejector pins are #000, 18mm, available on Taobao and Pinduoduo, usually a few yuan for 100.

Design Files

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Update:2026-03-28 00:01:51

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