Pocket Volt Meter

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24

6

About: I like to build some cool stuf

I have been using a bigger version of this voltmeter for quite some time and it was always very helpful

so when I saw Pocket Sized Contest I said to my self why didn't use this opportunity and share this with you

I made a few design improvements during this process so I am very happy with results

Step 1: Materials and Tools

parts:

tools:

  • soldering iron
  • hot glue gun
  • hot air gun or flame from hob (if you using heat shrink foil)

Step 2: Switch

  • disconnect all wires and find the best position for the switch
  • if you have a good position you can glue switch on the place
  • then connect (+) power to middle pin on the switch

Step 3: Probes

  • connect a wire to crocodile clips and secure it with hot glue
  • then connect black (-) probe to common ground and red (+) probe to pin where was orriginaly yellow or white wire

Step 4: Battery Connector

  • pick a place where you want your voltmeter and cut them to the needed length

(I made this second to sit on the connector so they were werry short)

  • connect the red wire to switch pin and black to common ground

Step 5: Test

  • test it and if everything works you can adjust accuracy if needed with little potentiometer (not every voltmeter have this option)
  • if you are done glue every wire to secure long life and glue the whole potentiometer on its place
  • you can wrap finished voltmeter in heat-shrink foil if you want for better-looking finish

Step 6:

and you are done you can now put your mini voltmeter into your pocket and have it wherever you go ready to use

enjoy :)

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    6 Discussions

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    liquidhandwash

    6 weeks ago

    I really like your project, I teach electronics and I think it will be a great project for my students. I might even try to make it smaller by using button cells and a push button to turn it on.

    1 reply
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    nikdo_nicliquidhandwash

    Reply 6 weeks ago

    if you can remove the voltage regulator you can power it directly by 3V without power loses
    then it can run efficiently on button cells

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    alby21europa

    6 weeks ago

    I made it, today....i simply add the megnetic part from hdd, for use it in diffrents situations...

    IMG_20190403_150958.jpgIMG_20190403_151221.jpgIMG_20190403_151251.jpg
    1 reply