他们逼我做卧底

【Training Camp】HarmonyPupper

Overview

Component selection

Main controller: HiSilicon Hi3861
7.4V to 5V: LM1084S-5.0/TR
5V to 3V3: ME6211
Servo driver: PCA9685, supports up to 16 channels

Mechanical structure

Reference: Mini Pupper

modified the servo arm to adapt to the MG90S, modified the thigh aperture to adapt to the 2.5mm screw hole position

materials

name	price	Remark
Servo MG90S	72
PCB	0	Jialichuang Proofing
element	around 15
master control	30
PCA9685	15	Taobao purchase
3D printing	50
carbon fiber parts	75
Battery	55
Screw nut	25
Bearing	50	Thrust bearings are more expensive

Exterior

APP

Design draft, development not yet completed

Model-Horizontal Screen-Default-Expand Backup.png

Known issues

The current position of the battery is not very reasonable, and the dog's body structure may be adjusted in the future.
The fixing hole of the PCB board is blocked and needs to be adjusted.
The power supply generates a lot of heat. Consider using DC-DC to replace the LDO in the future.

Functions to be developed

Add front screen. to display some basic information and expressions

Design Files

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