EP#126: Space Engineering

EP#126: Space Engineering

  • Parker
    • MAX6682 breakout board finished and ordered
      • This is for the thermistors
      • GitHub repo for the board files
    • New Jeep, The Grande Wagoneer
      • A/C doesn’t work as expected
      • Found the FSM and Schematic
      • Schematic has four parts that control the A/C Compressor
        • Evaporator thermistor
          • Turns out this is a standard 5K NTC thermistor
        • A/C temperature sensor
        • Compressor Low Pressure Switch
          • Standard part #4773763
        • Climate Control Box
  • Stephen
    • uTracer update
      • Enclosure will be a Hammond Manufacturing 1441-16CWW
      • uTracer PCB will be a daughter board attached to the relay control board
      • Built in USB -> RS-232
  • RFO
    • Spider silk microphone also senses slightest waft of air
      • “most waft-able air movement sensor ever”
      • 400V field, ~0.5V/Pa
      • Research paper is behind a pay wall :/
    • Voltage Regulator heatsinks - when are they required?
      • Maximum power dissipation is determined by the maximum junction temperature rating, the ambient temperature, and the junction-to-ambient thermal resistance.
      • PDmax=( TJmax- TA) / RθJA
      • Junction-to-ambient thermal resistance measured in C/W
      • Maximum Power Enhancement Techniques for SOT-223 Power MOSFETs - AN-1028
      • Constructing Your Power Supply —Layout Considerations - SLUP230
    • Jarrett from slack asks "WTF do you do with 2 million free LEDs?"

Tags: 1441-16CWW, electronics podcast, Grand Wagoneer, ITS OVER 9000 LEDS?!, Jeep, MacroFab, macrofab engineering podcast, MAX6682, MEP, Podcast, Spider Silk microphone, uTracer, Voltage Regualtor Heatsinks, waft-able

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