aerobotics

[Training Camp] plotclock custom writing little clock

Overview

Introduction: Writing robot (plotclock) using the OpenHarmony system

Product introduction: Developed based on the OpenHarmony open source Hongmeng system, using HI3861 as the MCU master.

Servo control via PCA9685.

Three external rotary encoder modules control the x-direction movement, y-direction movement, and vertical direction movement of the small clock respectively.

(Ability is limited, now only the writing time function is completed)

For custom writing, I used Arduino to write the code, and I will transplant it to HI3861 when I have time in the future.

Small bell structure: 3D printing (attachment)

A turtle shell is added behind the regular plotclock to store the circuit board and battery, and a cover is added to lead out the rotary encoder to realize the custom writing of the little cheap clock.

circuit board

Actual object (only regular functions completed)

Design Files

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Update:2025-05-21 10:04:55

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