Description

MEP EP#275: Log Stepping Revision Control

• Log stepper
  • Exercise in madness
  • 24 position stepped attenuator
  • 1db steps with step 0 being -infinite and step 24 being 0db attenuation
  • Requires lots of non standard resistor values
  • Constant total resistance
  • Excel sheet
  • Make before break operation
• Revision workflow
  • How do you document and handle revisions for schematics and pcbs?
  • Process
    • Get new rev
    • Go to testing
    • Find issues and document
    • Make new revision
    • Repeat
• Venturing into hobby level SLA printing
  • Elegoo Mars 2
    • Quality is amazing
    • Print speed is interesting
    • Will have to experiment with different resins to find a high strength, high temperature
    • Plating process to test
• Amplifier update
  • Live next week on parts replacement?
  • Recovering it