Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Building a Device Lab: Power

Building a Device Lab: Power

245cee81a9c424266e5e401d844ea881?s=128

Lara Hogan

June 20, 2014
Tweet

Transcript

  1. Power

  2. None
  3. electricity 101

  4. https://www.flickr.com/photos/marktee/9223003535 electricity = water

  5. https://www.flickr.com/photos/marktee/9223003535 usb/power cables = garden hose

  6. amps vs. volts

  7. amperage

  8. voltage

  9. volts * amps = watts!

  10. None
  11. power considerations

  12. how much power does each device draw, 
 according to

    the manufacturer's specs?
  13. how much power can the 
 surge protector  support?

  14. how much power can each usb hub support?

  15. None
  16. build to support  your most  power-hungry devices

  17. power problems

  18. power problems won’t accept a charge cycle on/off forever won’t

    turn on blinking battery can’t hold a charge someone stole the battery
  19. http://www.microsoft.com/surface/en-us/support/warranty-service-and-recovery/

  20. troubleshooting

  21. start simple

  22. "When you see hoof prints,  look for horses, 

    not zebras"
  23. isolate the problem

  24. DEVICE HARDWARE SOFTWARE

  25. DEVICE HARDWARE cables charging port peripherals SOFTWARE battery display

  26. DEVICE HARDWARE SOFTWARE apps operating system your base image cables

    charging port peripherals battery display
  27. why?

  28. •devices drew too much power ! •devices weren’t getting enough

    power ! •bad USB cables / peripherals ! •bad software ! •bad device
  29. iterating on power

  30. v1 - power strips

  31. v2 - stupid USB hubs

  32. v3 - better USB hubs

  33. Cambrionix hub

  34. Cambrionix hub • 32 ports • smart power delegation •

    fault indicator • disables problem devices
  35. v4 - better cabling/monitoring

  36. energy consumption

  37. None
  38.   

  39. None
  40. pro power tips

  41. http://iheartorganizing.blogspot.com/2012/03/you-asked-organizing-cords.html

  42. have spares/duplicates as back-ups

  43. have extra cables handy for people to steal