Building a haptic input knob from scratch!

How does the SmartKnob work? And how did I build it? Let’s peek inside and take a look! Thanks to JLCPCB for sponsoring part of this video! https://jlcpcb.com/DYE $2 for 5pcs 1-4 layer PCBs, PCBA from $0

If you haven’t watched the SmartKnob demo reel, check it out here:    • DIY haptic input knob: BLDC motor + r...  

And a HUGE thank you to everyone who has sponsored me on GitHub: https://github.com/sponsors/scottbez1

FOLLOW ALONG:
GitHub project: https://github.com/scottbez1/smartknob/
Twitter:   / scottbez1  

MENTIONS & OTHER COOL THINGS:
• Round LCD (GC9A01): https://amzn.to/3QaLR1i (probably cheaper on AliExpress, but with slower shipping - https://www.aliexpress.com/item/10050...)
• Magnetic viewing film: https://amzn.to/3MARQcw
• Magnetic sensor (MT6701): https://lcsc.com/product-detail/Angle...
• CA glue: https://amzn.to/3mxsEJC
• Gel soldering flux (NC191): https://amzn.to/3MGDSr5 - ❇️ HIGHLY RECOMMENDED - you’ll see this throughout the video (8:50, 9:14, 9:48) because it’s transformed the way I solder surface-mount components
• iFixit screwdriver set: https://amzn.to/3zsabG4 - makes a few tiny cameos in this video, but also highly recommended!
• InteractiveHtmlBom: https://github.com/openscopeproject/I... - awesome free plugin for KiCad
(some links are affiliate links, which help support my channel at no cost to you!)

All other parts can be found in the bill-of-materials (BOM) files linked on the project's GitHub page.

CHAPTERS:
0:00 Intro
0:44 First look inside
1:36 YOU CAN’T BUY THIS MOTOR :(
2:12 Virtual detents & haptics theory
3:39 Sensing rotation (magnetics)
5:26 Sponsor message
5:58 Electronics & Assembly
7:52 Weird flex, but ok
9:13 Display, light sensor
10:38 Mounting options and conclusion