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episode 331: 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
- “The Plague”
- Black Pad
- Very poor to no solderability
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
- Motor control