Day 6: (Mon Sep 15, Week 4) Music Box Review; Gearmotors

Notes for 2025-09-15.

New Assignments

1. New assignment, due Mon Sep 22: Exercise: Motor Music. Please submit documentation to Assignment 3 Shared Folder.

Agenda

1. review results of Exercise: Music Box

2. SolidWorks Q&A

3. discussion and demonstration of gearmotors

   • theory

   • operation

   • mounting

   • hubs

   • setscrew principles

   • available gear ratios

4. materials

   • Mechanical Part Guide

   • 6V gearmotor, part 1931, https://ioref.org/parts/1931

   • 4 mm shaft hub,, part 6049, https://ioref.org/parts/6049

   • barrel jack adapter, part 788, https://ioref.org/parts/0788

   • 5V 3A power supply, part 1395, https://ioref.org/parts/1395

   • small breakboard, part 2108, https://ioref.org/parts/2108

5. power supply demo

6. intro to solderless breadboards

7. in-class soldering tutorial