MEP EP#76: The Greek Tragedy of ADCs

Parker Dillmann |   |  854-ST2, AND!XOR, BM92A21MWV-EVK-001, Click Bait, MacroFab, macrofab engineering podcast, MEP, NAU7802, Nuvoton, OpenCV, pinheck pinball system, Podcast, Python, RPI3 CM, Tritrix Speakers, Tube Preamp, USB Type-C, Veroboard

MacroFab Engineering Podcast


Download: MP3
RSS Feed: Link
Twitter: @MacroFab

Runtime: (47:10)

Parker Dillmann
Stephen Kraig


Figure 1: SAIM software test.
Figure 1: SAIM software test.
Figure 2: Veroboard Stephen is using.
Figure 2: Veroboard Stephen is using.
Figure 3: Stephen's speaker kit under construction.
Figure 3: Stephen’s speaker kit under construction.

Podcast Notes

  • July Hardware & Electronics Engineering Meetup by MacroFab & Mouser Electronics event is live! Come grab some food, beer, and socializing if you’re in the Houston area
  • Previous Podcast Updates
  • Parker
    • With the success of the Raspberry Pi Compute Module LVDS test board. I started putting together the PinHeck REV8 board
    • More Python and OpenCV work (fun!)
      • Have the webcam taking pictures
      • Auto crops and records all the images of parts
      • Looking into a higher resolution camera, more info on that later
  • Stephen
    • Parts for the filter finally shipped!
    • Started putting together the boards
      • Like the multi colored jumpers
      • Veroboard – Strip Board Mouser Part Number 854-ST2
      • 80 x 100 mm with mounting holes
      • Use a 7/32″ drill bit and a jeweler’s drill to cut traces and brillo pad to clean up
    • Going to add a tube preamp to the synth output
      • Already have the preamp built. Just need to connect it.
      • Schematic
    • Tritrix speakers and the nutube amp.
      • Kicking up the nutube amp again
      • The speakers are almost built just need to paint and finish
      • 3d printed a plate for soldering the crossover to
  • Pick Of the Week (POW)
    • Nuvoton NAU7802 – found on the Nice Chips Subreddit
      • Precision low-power 24-bit ADC , with an onboard low-noise PGA, onboard oscillator, and a precision 24-bit sigma-delta ADC . Capable of up to 23-bit ENOB (Effective Number Of Bits)  performance.
      • SOP-16 or DIP-16
      • I2C
      • $2.22 in singles
      • Gotcha @10SPS, PGA=1
  • Rapid Fire Opinion (RFO)
    • At Last, (Almost) A Cellphone With No Batteries! – HackADay
      • University of Washington
      • The first-ever battery free cell phone, able to make calls by scavenging ambient power.
      • Not really a cellphone. Its really a remote handset for a base station.
      • 3.5 microwatts and transmits 31 ft away.
    • Evaluation boards for USB type-C power delivery – Electronics Weekly
      • Rohm has announced USB Power Delivery (USBPD) transmitter/receiver evaluation boards.
      • 15 to 100W
      • All about circuits video
      • BM92A21MWV-EVK-001 is the one you want
      • Availability: Now
      • Pricing: TBD 🙁

Have an idea for a podcast episode? Maybe a question for Parker and Stephen? Hit us up!

Did you enjoy this episode? Let us know in the comments below!


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