Description

Next, we will assemble the robot. The official has provided very detailed documentation for the assembly of 3D printed parts:

• Link: Qmini DIY Guide

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Here are some precautions for the assembly process:

1. 3D Printed Parts Quality: Ensure using high-quality 3D printers and materials to guarantee the precision and strength of parts. It is recommended to use JLCPCB 3D Printing Service, or use high-quality printers and materials for custom printing.
2. Motor Installation: When installing motors, ensure the motor shaft is aligned with the connector to avoid vibration and noise during operation. Use appropriate tools and methods to securely fix the motor.
3. Electrical Connections: When connecting motors and other electronic components, ensure connections are correct and secure. Use appropriate connectors and insulating materials to avoid short circuits and poor contact.

Motor and USB to Quad 485 Module Wiring

Image Source 1: https://docs.tonylabs.com/robotics/qmini

Image Source 2: https://my.feishu.cn/wiki/D0Khwqz3vi5j2LkJidkcIteZnjC

Step-Down Module Wiring

The function of this module is to reduce the battery's 24V voltage to 5V to power the development board.

Official BOM Errata

In the official Bill of Materials (BOM), some items are missing or incomplete. Here are some supplementary notes:

Source: https://my.feishu.cn/wiki/D0Khwqz3vi5j2LkJidkcIteZnjC

1. IMU Model Error

The IMU model in the official manual is incorrect and needs to be changed to N100. Purchase link: Click to Jump

2. Plane Needle Roller Bearing Quantity Error

Quantity per unit is 4. Purchase link: Click to Jump

3. Bearing Description Error

The official description is incorrect. The bearing is a standard bearing (inner diameter 6mm, outer diameter 22mm, thickness 7mm).