MEP EP#76: The Greek Tragedy of ADCs

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
  • And!XOR
    • Bender on a Bender Defcon 25 badge has a HackADay article
    • Friday Hack Chat this Friday (7/14)
• 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 🙁

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