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SX28 protoboard in an Automotive application using 12vdc — Parallax Forums

SX28 protoboard in an Automotive application using 12vdc

SpragmaticSpragmatic Posts: 59
edited 2010-03-12 00:31 in General Discussion
I'm using a SX28 protoboard for a project that's going into a new Toyota Tundra. My questions are--

Should I use a dc-dc converter to keep the voltage at the board a constant 12v? (9v-18v in with 12v out {1.25amp} with internal isolation) I'm not sure how the board will handle with voltages ranging from 10-14.6v.

I'm going to leave the on/off switch in the on position with board being powered on through a switched ignition feed. It should be o.k. for long term?

Should I use some type of protection on either the B+ or B- side?

Thanks!!

Greg

Comments

  • pmrobertpmrobert Posts: 677
    edited 2010-03-11 16:27
    It probably depends on the specs of the regulator on the protoboard. Vehicle power is typically very dirty with a lot of fairly severe transients.

    -Mike
  • SpragmaticSpragmatic Posts: 59
    edited 2010-03-11 16:36
    That's what I was thinking.· You think the dc-dc converter would take care of that?
  • ChetChet Posts: 150
    edited 2010-03-11 16:51
    I use 8 volt (pre)regulators in my car for power supply voltage to my protoboards (7805 or equiv)

    good luck
  • Martin HodgeMartin Hodge Posts: 1,246
    edited 2010-03-11 17:22
    I've noticed that the on-board reg on the SX28 proto gets hot pretty quick when input with 12v as you add components to the proto area. keep an eye on it and consider upgrading the heat sink.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    -MH
  • SpragmaticSpragmatic Posts: 59
    edited 2010-03-11 18:10
    Thanks !!
  • pmrobertpmrobert Posts: 677
    edited 2010-03-12 00:31
    There ya go! Let us know how things work for you.
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