MEP EP#331: The PCB Plague

MEP EP#331: The PCB Plague

MEP EP#331: The PCB Plague

Neutrik EtherCON Ruggedized RJ45

  • Lockable RJ45 cable within an XLR style housing
  • Also come in a sealed version that offers IP65 rating

Interesting PCB failures

Effect of Moon Phase on Tombstoning

  • Many factors play a role in the overall outcome of PCB assembly, especially when very small components are involved. Broadly speaking, tombstoning is a problem with very small 2-pin components (0201 caps and such) and we've filtered out the following challenges:
  • - proper paste application
  • - component placement
  • - designing for "good" thermal properties of the PCB with regard to tombstoning
  • - moon phase

Stretching Stainless Stencils? Oddity Today

  • Interesting manufacturing defect surfacing
  • Stencil “stretches” ever couple panels or so
  • Anyone ever seen or experienced this before?
  • Solutions? Next Steps?

Project: SNACKEY

  • Hacking a USI/Vendnet/FSI 3159
  • Theory of how a snack machine works
  • Interesting Parts
    • UCN5890A
    • UCN5842A
    • SC529136CFN2
    • M48T18-100PC1
  • What I am doing to hack it
    • Motor control
      • High/Low side transistors
      • Might change this to mosfets to reduce voltage drop
    • Arduino all the things
    • Current sensing
      • INA219 High side sensing

Jaksot(448)

EP#16: Fixtures of Echoing Tubes

EP#16: Fixtures of Echoing Tubes

Hosts: Parker Dillmann Stephen KraigGuests: N/A Figure 1: Non working Space Echo RE-201 Figure 2: A NuTube 6P1 straight from KORG. Figure 3: The constant current source Stephen is using for his NuTub...

20 Touko 201643min

EP#15: Ridiculously Blinking LED

EP#15: Ridiculously Blinking LED

Hosts: Parker Dillmann Stephen KraigGuests: N/A Figure 1: SSPS front panel test layout. Miniature version of the real front panel to test physical placement and new parts. Figure 2: Two TPS65982-EVM b...

13 Touko 201633min

EP#14: Discrepant Diodes

EP#14: Discrepant Diodes

Hosts: Parker Dillmann Stephen KraigGuests: N/AFigure 1: SSPS front panel layout. Traces to come soon. Figure 2: Inconsistencies in the LTST-C171CKT datasheets.Podcast NotesStephen is still working on...

6 Touko 201635min

EP#13: Picture Books for Engineers

EP#13: Picture Books for Engineers

Podcast NotesOur guest this week is Dustin Holliday, a Production Line Engineer at MacroFab, INC. Dustin programs the My200 paste jetter, the My500 pick and place, and the Rhythm Selective Solder. See...

29 Huhti 201640min

EP#12: Silicon Condensors

EP#12: Silicon Condensors

Podcast NotesStephen built a power supply for an old school tube microphone for Josh. Josh does the recordings for the Podcast. See Figure 1 for the schematic.Microphone is a Sony C37 tube condenser m...

22 Huhti 201630min

EP#11: False Fuses and Kitschy Kickstarters

EP#11: False Fuses and Kitschy Kickstarters

Podcast NotesParker has been hard at work on the PinHeck Test Fixture. It uses over 160 pogo pins to test every single function of the PinHeck Pinball System. There will be an article about designing ...

15 Huhti 201637min

EP#10: IoT’s Cloudy Future

EP#10: IoT’s Cloudy Future

Podcast NotesFirst Guest for the MacroFab Engineering Podcast! Trey German is working on a IoT platform using BLE and a small coin cell.Trey's device worked on the first revision! How often does that ...

8 Huhti 201641min

EP#9: Robots with Feelings

EP#9: Robots with Feelings

**Podcast Notes*** Parker and Stephen continue work on the [Super Simple Power Supply](https://github.com/MacroFab/SSPS). There is a full on simulation of the analog section on MultiSim.* Stephen foun...

1 Huhti 201636min

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