Kalashinikaze the right to fly arms

Circuit Break Podcast #161

Kalashinikaze: The Right to Fly Arms

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February 27, 2019, Episode #161

Parker gives an update on his Prop Dev Stick Type-C and Stephen designs a tonestack based on the LND150.
  • Parker
    • Prop Dev Stick Type-C edition update
      • Routing almost complete
      • Moved from 0603 to 0402
      • Parallax Propeller moved from QFP to QFN
      • Changed the voltage regulator from a NCP1117 3.3V to a AP7361C 3.3V
        • Why?
      • Adding Lipo battery charging support
    • 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
  • R.F.O.

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!

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!

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!

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

About the Hosts

Parker dillmann
  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

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!

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