MEP EP#380: The Simplest SMT Component… In The World

Stephen’s CNC steps closer to being completed on this CNC electronics centric podcast! We discuss design snafus and problems with poorly constructed CNC controllers and design misses in the mechanical assembly. Then Parker receives a newsletter that has the simplest SMT component in the world. What could that component even be used for?

Topics:

Stephen’s CNC - What remains?

• The 2000 mm ball screws in right before the episode
• Drives/drivers/power supply have arrived!
• Need to order
  • Controller - purchased NVEM
    • Now the STB4100
  • Limit switches
  • E-chain
  • MPG
  • Safety stuff like the change over switch and breaker
• Need to make a box for the FRO/SRO/SJO
  • Why this isn’t a normal thing is strange
• Making the surface of the table
  • MDF with sunken screws
• Software
  • Making control box wiring diagrams
  • Brewery controller
    • Thunder ohm style wiring
    • Max max
  • Printable heat shrink to match diagrams
• Electrical Enclosure 
  • Vevor 24x24x8
• Cabling woes

The Simplest SMT component… In The World

• Harwin Surface Mountable Contact Pads
• Marketing material states
  • Surface mountable contact pad, ideal as a mating area for Spring Contacts, Spring Loaded Contacts and Spring Loaded Contact Connectors.
• Any reason to use these? 
  • Datasheet shows that the gold thickness is no thicker than normal ENIG
    • Contact Pad 0.025um - 0.075um
    • IPC-4552 0.05um - 0.20um