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Mandatory USB Type-C for everything? Parker and Stephen discuss the current EU ruling and preparing your PCBA design for contract manufacturing!
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February 27, 2019, Episode #161
- Parker
- Prop Dev Stick Type-C edition update
- Testing my USB Type-C example boards
- Interesting Dongle Type-A to Type-C
- Wagon power mirror controller works!
- Stephen
- LND150 feedback tone stack for a Roz amp
- Similar to the Venteq this is a variable impedance filter inside a feedback loop
- Uses a modified architecture
- LND150 makes up the active element
- From ~80V to 400V it is linear and does not shift amplitude
- High voltage power supply still working great
- Macro Amp
- Looking at the component layout
- Need to get octal sockets and J-Fets for the buffers
- LND150 feedback tone stack for a Roz amp
- R.F.O.
- Know your fits and tolerances
- Great video covering tolerances and fits for mechanical design
- New engineers – selecting tolerance too tight. Most of the time this is not needed.
- Fits – Ansi standards
- Machinists handbook 30th edition $35 on Amazon.
- Pillow Flight game
- Pico-8 game
- The Kalashnikov assault rifle changed the world. Now there’s a Kalashnikov kamikaze drone.
- How will the future of hobby drones be affected by this?
- FAA Mandates External Registration Markings for Drones
- Hunting traps in most states have this requirement
- Kalashnikov also makes an Electric Vehicle?
- This reminds us of when the Media was scared that 3D printers could make “Ghost Guns”
- Know your fits and tolerances
Visit our Public Slack Channel and join the conversation in between episodes!

Parker’s latest revision of the Prop Dev Stick. Type-C Edition. Will have a lipo battery charger!

Stephen’s…. questionable tone stack prototype using the high voltage LND150. There is 400V running through this!

The Wagon Power Mirror Module with Aluminum toggle bats that Mike Williams made for Parker!
About the Hosts

Parker Dillmann
Parker is an Electrical Engineer with backgrounds in Embedded System Design and Digital Signal Processing. He got his start in 2005 by hacking Nintendo consoles into portable gaming units. The following year he designed and produced an Atari 2600 video mod to allow the Atari to display a crisp, RF fuzz free picture on newer TVs. Over a thousand Atari video mods where produced by Parker from 2006 to 2011 and the mod is still made by other enthusiasts in the Atari community.
In 2006, Parker enrolled at The University of Texas at Austin as a Petroleum Engineer. After realizing electronics was his passion he switched majors in 2007 to Electrical and Computer Engineering. Following his previous background in making the Atari 2600 video mod, Parker decided to take more board layout classes and circuit design classes. Other areas of study include robotics, microcontroller theory and design, FPGA development with VHDL and Verilog, and image and signal processing with DSPs. In 2010, Parker won a Ti sponsored Launchpad programming and design contest that was held by the IEEE CS chapter at the University. Parker graduated with a BS in Electrical and Computer Engineering in the Spring of 2012.
In the Summer of 2012, Parker was hired on as an Electrical Engineer at Dynamic Perception to design and prototype new electronic products. Here, Parker learned about full product development cycles and honed his board layout skills. Seeing the difficulties in managing operations and FCC/CE compliance testing, Parker thought there had to be a better way for small electronic companies to get their product out in customer's hands.
Parker also runs the blog, longhornengineer.com, where he posts his personal projects, technical guides, and appnotes about board layout design and components.

Stephen Kraig
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.
Special thanks to whixr over at Tymkrs for the intro and outro!
Related Podcasts

Power Hungry Venti-Q
The Venti-Q gets nears completion, USB Type-C example circuit completed, and EE interview topics.

Jason Cerundolo of Reclaimer Labs
Jason Cerundolo joins Parker and Stephen to discuss testing and evaluation of the USB Type-C PD spec.

Are you ready to Tango?
Stephen looks to resurrect the ribbon microphone project and of course Parker scope creeps it.

Embedded Brewing with Arduinos
Parker and Stephen talk about Stephen's Brewing Rig and designing the new PinHeck Pinball System.

From A Current Perspective
Parker talks about revitalizing old projects, Stephen discusses all pass filters, and side entry into SMT pads.

This Podcast Intentionally Left Blank
Mandatory USB Type-C for everything? Parker and Stephen discuss the current EU ruling and preparing your PCBA design for contract manufacturing!