plotclock

Introduction: Writing robot (plotclock) using the OpenHarmony system

Product introduction: It is developed based on the OpenHarmony open source Hongmeng system. The chip used is hi3861, which supports 16-channel servo control, GPIO, ADC, PWM and other operations.

Common operations such as writing and drawing graphics have been implemented

Chip solution: multi-channel steering gear control board based on HiSilicon Hi3861 chip and PCA9685

Product core parameters:    
Working voltage: 7.4V~20V with overheating and overcurrent protection

Hardware interface: gpio, ADC, PWM

Double-layer board design single-sided layout

3 servos (mg90s metal gear 180°, Xubao 7.2 yuan each) Recommended metal gear, durable

Small clock structure: 3mm acrylic cutting version (cost about 15 yuan)
                  

Material list and reference purchase link: https://docs.qq.com/sheet/DWGxocU1aalRJS0Z2?tab=9e4zer

Please use Hiburn.exe to burn the firmware program.

See the attachment for the code and burning tools.

See the application source code: https://gitee.com/genkipi/applications_genkipi_sample/tree/OpenHarmony-3.0-LTS/app/plotclock

Complete environment code: https://gitee.com/genkipi/ohosdog

Related information Baidu network disk: https://pan.baidu.com/s/1OztwrWfjke83tJw3oP9gRQ?pwd=qu2s

Copy the plotclock directory of Xiaojianzhong to the directory below the complete environment

ohosdog/applications/genkipi/app

In fact, plotclock is a dog leg of the robot dog. You can learn the principles of positive and negative solutions through the dog leg simulator.

https://gitee.com/tangyang/leg-kinematics

The simulator is open source and supports

•  Correct solution to dog leg kinematics
•  Inverse solution of dog leg kinematics
•  Range of motion point simulation
•  Simulation map support
•  Dynamic adjustment of inherent parameters
•  Generate specified trajectory
•  Font track support
  • digital font
  • Alphabet font
  • Chinese character library
•  Save modified parameters
•  Device synchronization simulation

2.0 firmware can automatically write the time.