Parker Dillmann | August 29, 2018 | BTM7752G, Chime Module, electronics podcast, MacroFab, macrofab engineering podcast, MC14001B, MC14069, MEP, RKJXT1F42001, uTracer, Wagon

Podcast

135

MEP EP #135: The Hamster That Chirps

Podcast Notes

Parker
- Wagon Chime module
  - Two ICS
    - MC14001B
    - MC14069
  - Interesting metal can for a speaker module
  - Two transistors in a push pull configuration
  - Replaced electrolytic caps and it kinda functions
- Powered Mirror Circuit
  - RKJXT1F42001
  - BTM7752G
Stephen
- uTracer complete!
  - Cleaner signals?
- Lessons learned
- Things Stephen would do different if he could
RFO
- Craig Rettew askes: “Cost comparison between 2 layer and 4 layer boards. Are 2 layer much cheaper? Would a 4 layer board allow for a smaller board area vs 2 layer to make up for cost?”

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Chime module from Parker’s Wagon.

Internal PCB for the chime module.

Backside of the chime module PCB. Easiest way to remove the conformal coating?

First draft of the schematic for the powered mirror circuit.

Stephen’s completed uTracer project!

Special thanks to whixr over at Tymkrs for the intro and outro!

About The Hosts

Parker Dillmann is MacroFab's Co-Founder, and Lead ECE with backgrounds in Embedded System Design, and Digital Signal Processing. He got his start in 2005 by hacking Nintendo consoles into portable gaming units. He also runs the blog, longhornengineer.com, where he posts his personal projects, technical guides, and appnotes about board layout design and components. Parker graduated with a BS in Electrical and Computer Engineering from the University of Texas.

Stephen Kraig began his electronics career by building musical oriented circuits in 2003. Stephen is an avid guitar player and, in his down time, manufactures audio electronics including guitar amplifiers, pedals, and pro audio gear. Stephen graduated with a BS in Electrical Engineering from Texas A&M University.