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MEP EP#200: Rotary Alarm System

Author
MacroFab, Inc.
Published
Wed 27 Nov 2019
Episode Link
https://share.transistor.fm/s/94305bd7

MEP EP#200: Rotary Alarm System

Parker



  • Air Raid Siren Completed

  • Working on the power sub system for a D.C. Badge

    • Based on the successful DOOM SAO power system

    • USB Type-C for “cable” power

    • 5.1K on both CC pins

      • Gives us 1.5A at 5V which is plenty of juice



    • Alkaline Primary Cells

    • TPS2113 for switching between cable power and the batteries

    • SAO connector implementation with proper current limiting

    • Gonna try a small little buck switcher

      • TLV62568 to knock the USB and battery voltage down to the 3.3V we need.



    • Going to design a lithium powered version that can recharge over the Type-C



  • Brewery Building is next project

  • MacroFab has guided tours in the platform. Let me know how they work.


Stephen



  • Multi Layer PCB

    • Finishing up a 6 layer PCB with mixed signal

      • Top

      • GND

      • Inner1

      • POWER

      • POWER

      • Bot





  • Multi Transformer solution for preamp power supply

    • Should I just go with my already proven SMPS instead?




R.F.O.



 


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