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STM32F407VET/VGT Universal Car Expansion Board

Overview

This expansion board can be used with STM32F407Vet6 or VGT6 for learning and building car projects. Besides the external modules, you need to provide your own, including switches, headers, pin headers, etc. The cost of replicating this
board is less than ten yuan. The interfaces supported by the board are as follows: if you need to know the corresponding pins, you can open the schematic diagram of the project and match them one by one.
1. Step-down module

2. TB6612 motor drive module

3. MPU6050 6-axis module

4. Witt gyroscope – reserved serial communication interface

5. Eight-channel grayscale tracking sensor interface – any tracking sensor on the market can be used (the one used here is from Senvi).

6. 0.96-inch OLED screen interface, using I2C communication, replaceable color screen, any I2C-compatible screen is compatible.

7. Four motor XH-2.54-8P interfaces, all with encoder acquisition support interfaces, pre-assigned.

8. SR-04 ultrasonic interface (supports tracking and obstacle avoidance, etc.).

9. Bluetooth module interface - 4P.

Replica expansion board supported modules.pdf

PDF_STM32F407VET-VGT Universal Car Expansion Board.zip

Altium_STM32F407VET_VGT Universal Car Expansion Board.zip

PADS_STM32F407VET_VGT Universal Car Expansion Board.zip

BOM_STM32F407VET_VGT Universal Car Expansion Board.xlsx

92171

Logitech G102 Mouse Adapter Board 5+1 Buttons

Simple and practical scroll wheel included

Project Origin:
This project originated from a sudden inspiration during my daily gaming.
Some game scenarios require relatively complex operations, such as repetitive buying and selling, etc.
The usage frequency is not high, but it is very tedious. It is not cost-effective to use a mouse and customize the button. Therefore, this project was created.
Functionality:
It uses Logitech's official control software to customize its functions and realize one-click macro operation.
Principle Analysis (Hardware Description):
Directly bring out the button. The difficulty is relatively low.
Precautions:
Bring out the onboard button. The button has a common ground. The encoder is the second generation. Early and first generation have 1K resistors and capacitors. Be careful not to damage them during soldering. It can also be directly integrated into the adapter board. Be careful not to leave too short the flying wire.
Assembly Process:
After the flying wire is completed, use copper pillars to clamp the motherboard in the middle of the adapter board. Actual

Product Image

Replica Cost:
The material cost is no more than 10 yuan. The switch is TB. The trial pack of Gateron is 4 yuan for 10.
The encoder is just a regular EC11 for about 2 yuan.
The G102 main control board is about 20 yuan on Xianyu. Motherboards with double-click are also available because the double-click fault is due to the microswitch.
The
adapter board cannot completely cover the motherboard. You can cut the board and fly the wire.
The USB ports are not sufficient. The future will integrate HUB function. Please look forward to it.

PDF_Logitech G102 Mouse Adapter Board 5+1 Buttons.zip

Altium Logitech G102 Mouse Adapter Board (5+1 Buttons).zip

PADS Logitech G102 Mouse Adapter Board (5+1 Buttons).zip

BOM_Logitech G102 Mouse Adapter Board 5+1 Buttons.xlsx

92172

electronic

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-24 06:22:45

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