The genesis of my bill of materials

Circuit Break Podcast #140

The Genesis of My Bill Of Materials

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October 2, 2018, Episode #140

Parker gets strangled by Raspberry Pi and SDR cables and Stephen gets his Vox in a Box power supply ordered.
  • Parker
    • RTL SDR functional setup?
      • RTL-FM
      • Seems to work fine for FM stuff
      • AM works in direct sampling mode but I can’t seem to get that to work with RTL-FM
        • Upconverter needed?
        • Auto switching signals?
      • RTL_FM also does not support stereo sound
      • Might need a new option?
    • KiCad User improvements for MacroFab in the future
      • KiCad Python API has awful documentation
    • Particle Spectra Conference
  • Stephen
    • Vox in a box tester layout is complete. Will order tonight
  • R.F.O.
    *
  • Luke Robertson from the Slack Channel
    • How do you search for technical information? I am specifically thinking in regards to forums. I realize there is a niche forum for everything but I was wondering if there are a few standouts people prefer (presumably ones that aren’t laced with kids looking for answers to their homework).
    • Luke mentions Eevblog.com and diystompboxes.com

Visit our Slack Channel and join the conversation in between episodes and please review us, wherever you listen (PodcastAddict, iTunes). It helps this show stay visible and helps new listeners find us.

Vox in a Box power supply and 30 Watt amplifier enclosure and PCB mock up.

Vox in a Box power supply and 30 Watt amplifier enclosure and PCB mock up.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Top Copper.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Top Copper.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Inner Copper 1.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Inner Copper 1.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Inner Copper 2.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Inner Copper 2.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Bottom Copper.

Stephen’s Vox in a Box power supply and 30 Watt amplifier. Bottom Copper.

Meme Parker made before MacroFab was even started when the Parallax Prop 2 was still a dream.

Meme Parker made before MacroFab was even started when the Parallax Prop 2 was still a dream.

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 is a component engineer working in the aerospace industry. He has applied his electrical engineering knowledge in a variety of contexts previously, including oil and gas, contract manufacturing, audio electronic repair, and synthesizer design. A graduate of Texas A&M, Stephen has lived his adult life in the Houston, TX, and Denver, CO, areas.

Stephen has never said no to a project. From building guitar amps (starting when he was 17) to designing and building his own CNC table to fine-tuning the mineral composition of the water he uses to brew beer, he thrives on testing, experimentation, and problem-solving. Tune into the podcast to learn more about the wacky stuff Stephen gets up to.

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

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