MEP EP#295: Design For Everything

Podcast Notes

The DFs

  • DFA – Design for Assembly
  • DFC – Design for Conservation
  • DFD – Design for Documentation¬†
  • DFM – Design for Manufacturing
  • DFP – Design for Production
  • DFR – Design for Repair / Recycle
  • DFT – Design for Test
  • DFS – Design for Safety

How to DFX

  • Identify what you are Designing For
    • Perhaps list them based on priority
    • Make a list of all of the items
    • Make a timeline for which DF applies when in the product life
  • Create a list of key design criteria
    • This will vary based on where the product is in the design cycle
  • Schedule specific focused time to have a team review the DF
    • Have the main designer present, but it is best to have other perform the DF checks
  • Have a sign off and circle back process
    • If it passes then have the team sign off and move to the next stage
    • If it fails, have a process of fixing and asses if another full DF meeting is needed
    • Perhaps just a small DF meeting to address one thing
  • At then end of the product design cycle you will have a folder of completed design checks that help validate the release of the product


Techniques for making revisions easier

  • Put circuits that you know need adjustment where you can reach them with a soldering iron or a probe
  • 0 ohm resistors
    • Make for very easy configuration changes
  • DNI/DNP – lots of people don’t know this is a thing
  • Multiple footprints
  • Parallel components
  • Room for soldering!
  • Test points – different from component terminations
  • Keep lists of things to remove for production

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