Circuit Break - A MacroFab Podcast

Prepare to plug into the world of electrical engineering on Circuit Break - A MacroFab Podcast. Join two adventurous engineers, Parker Dillmann and Stephen Kraig, as they dissect the latest tech innovations, break down industry news, navigate the challenges of DIY projects and engage in compelling conversations with industry experts. Their real-world practical experience fuels their infectious passion and serves as the driving force behind a show that delves into both theoretical concepts and practical issues engineers face. Parker and Stephen speak with fellow engineers, makers, hackers, and business leaders, creating a dynamic space for discussing challenges in the realm of electrical engineering. They unravel the origins of product updates, ponder the lab-to-marketplace journey of technological advancements and reverse engineer the engineering process. They love to speculate about the decisions dev teams have made and boldly offer their own opinions. The show provides a unique window into electrical engineering for recent graduates and current students, who want a sense of what job markets and workplaces are looking for...

https://www.macrofab.com/podcasts/

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episode 74: MEP EP#74


Reverse Biasing Opamps

  • Parker
    • Been learning Python and OpenCV
      • OpenCV is an open source computer vision library
      • PyImageSearch
      • Setup PyCharm
      • Using Requests to use and get information from the MacroFab API
      • Built a 3D printed chassis for holding a 5MP USB camera
      • Taking pictures of PCBs and removing lens distortion
    • RPI3 CM PCB done
      • Will be testing over the weekend
      • 6 Pack of beer riding on this board!
      • Board does power up correctly.
    • COMPIOT board Opamp blew up :(
      • Symbol on Schematic unlabeled for the power inputs of the opamp
  • Stephen
    • Still Making the three synth modules (two envelops and one filter)
      • Waiting on the CA3146 transistor IC
      • This is an obsolete part
      • Stephen wants to use it for legacy reasons
    • Making some power supplies for tube mics (the same one that we made for JOSH).
      • Have to figure out how to make a 6.3V or 12.6V high current rail along with a 200V to 300V low current rail.
      • Stephen is going to use transformers that I have at my shop.
      • One drops 120VAC to 10VAC and the other raises the 10VAC up to 230VAC
      • The 10VAC rectified can potentially give 12.6VDC. If not I can drop it to 6.3VDC.
      • The 230VAC rectified can become 325VDC.
  • Pick Of the Week (POW)
    • 130-in-1 Electronic Playground from SparkFun
      • With the closure of Radio Shack where would you buy one of these intro kits?
      • $50 Is cheaper then Radio Shack even!
  • Rapid Fire Opinion (RFO)
    • Fail of the Week: Museum Buttons - Hack A Day
      • Industrial buttons are not really kid proof
    • Wood Lichtenberg - Instructables
      • 12kV 35mA - Neon Sign Transformer PSU
      • Baking soda in water as the conductor for electricity
      • Marinate wood in baking soda water mix
      • 342,857.1428 ohms to pull the entire PSU load
    • Qualcomm fingerprint sensor enables virtual home button - Electronics Weekly
      • Qualcomm has developed an ultrasonic fingerprint sensor which can operate under the glass of a mobile device avoiding the need for a mechanical home button. It also detects heartbeat and blood flow.
      • 800 µm of cover glass and up to 650 µm of aluminum

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

Tags:  CA3146, MacroFab, macrofab engineering podcast, MEP, OpenCV, Podcast, PyCharm, Python, Qualcomm, RPI3 CM, Tube Mics, Wood Lichtenberg


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 June 30, 2017  32m