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Puppies based on Hi3861 and PCA9685

Overview

1. The main control chip used is Hi3861 and pwm control servo chip PCA9685 (purchased on Taobao).

2. In order to facilitate the observation of the board status, an LED light indication circuit is added.

3. In order to simplify the board, only 8 servo control pins are introduced.

4. Use USB power supply solution to provide 5V voltage for the servo, and then step down the 5V voltage to 3V3 through LDO.

(Disadvantage: LDO selection problem caused 5V to drop to 3V3 to provide unstable power supply for the chip. Later, an external power supply method was used to solve the problem)

5. To burn firmware on the board, you need to use a serial port cable or USB to TTL;

Process: Make the board -> Welding -> Debugging -> Burn firmware -> Add peripherals -> Adjust the installation angle (log in to the website after connecting to the board wifi) -> Install dogleg -> Run the program

Design Files

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Update:2025-05-09 05:56:06

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