DIY Your Own Voltmeter
hello in this instructables we will see how to create your own voltmeter that can measure up to 100v DC
Equipment
for this tutoriels you need :
- mini-dc-voltmeter => link
- felt pen
- wire
- battery 3,7v
- audio jack
- push button
- Epoxy glue
Drill the Holes
in this step you will need to drill two rectangular holes one to accommodate the mini dc voltmeter and the other to put the push button
Follow the Diagram and Solder the Components
for the audio jack it is necessary to solder the 3 ends with only one wire, repeat the action for a second time; after connecting all the components together according to the second diagram
Glue All
after soldering all the components, place them in the felt and stick the push button and the mini dc voltmeter with the epoxy glue so that it does not move any more
Add Battery
add the battery and close it all
Testing
you can test the voltmeter by taking a voltage source (battery, solar panels) the + is on the felt, and the - is the other part of the wire
Video
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