A91ee

Three-pin flash drive

Overview

Recently, I've been working on a model aircraft remote control receiver, which requires an extremely small and lightweight circuit. This makes it inconvenient to place large programming pads, and the program requires repeated debugging and modifications. Therefore, I decided to make a programming clip.
I'm using an STC51 series microcontroller, and three pins are sufficient for programming.

I bought a "transparent small PP clip" from Taobao.

M2 screws and nuts are needed to secure the PCB board of the programming clip to the clip; super glue (502) should also work.
M3 screws and nuts are used as support pillars to position and fix the circuit board, and their height can be manually adjusted. A little silicone rubber is applied to the bottom of the screws to prevent them from conducting electricity during programming and causing a short circuit on the target board.

I removed the clip to install it, and reinstalling it was quite difficult. I recommend directly gluing the circuit board to the clip.

Design Files

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Update:2026-03-28 00:44:34

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