Brewing, Click bait Awesomeness, Engineering Podcast, Gainclone, LM1875, LM3875, MEP, Podcast, Sketchy Enclosures

MEP EP#32: Erroneous Enclosures of Enormous Energy

Download: MP3
RSS Feed: Link

Runtime: (27:11)

Parker Dillmann
Stephen Kraig


Podcast Notes

  • Stephen brewed a batch of beer over the last weekend with his new electric brewing setup. It is not complete yet but it does work. Stephen converted his brew kettle to include a 4500W heating element bought from Lowes. It runs on 220 volts. At full blast it pulls ~20A.
  • The enclosure for Stephen’s brew rig is currently a USPS box (See Figures 1 and 2).
  • Parker is working on an Audio Amp for Spooky Pinball. It is going to be based on the Gainclone. Instead of the LM3875, Parker is going to use the LM1875 as he does not need 56W per channel.
  • For Tone control, Parker found these dirt cheap potentiometers on Ebay. Seem to work fine…
  • EMC FASTPASS has a great article ever product engineer should read. PCB Cost Reduction and EMC – A Cautionary Tale. The article is about redesigning a product to lower its cost and the trials of the FCC/CE certification.
  • Awesome click bait title from Hackaday. Top Ten Reasons Not To Buy A Fake MacBook Charger. Number Eight Will Shock You.

USPS Box of Doom.
Figure 1: Stephen’s hacked together USPS PID controller. Looks professional with the RTD bulk head fitting.

USPS Box of Doom. Pt 2.
Figure 2: Inside the USPS PID controller. Looks like proper grounding to chassis right there. Don’t try this at home kids.

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