Volt meter clock

The Volt meter clock continues our recent slew of interesting clock projects. Though considerably easier to read than the resistor clock, it is in the same frame of mind. Set up to look like the face of an analog volt meter, it almost looks like something official or scientific. Since [Jon] couldn’t simply drop a clock mechanism in, he used a PIC microcontroller. The circuit is pretty simple, but he deserves some credit just for the unique layout.

16 thoughts on “Volt meter clock

  1. Interesting concept and well implemented. Though personally it seems like the face would make more sense if it were 24 hours with 12 noon in the center. Though I suppose that would make the clock harder to read accurately (at least the minutes), since the distance between hours would be reduced.

  2. he used a servo to move the clock pointer ? wouldn’t it be easier to just just an Digital/Analog converter for voltages from 0V to 12V ?
    something like “gradbert” did.

  3. And actually, no, it would be more difficult to drive an analog meter. No external parts are needed to drive a servo. It’s actually pretty simple.

  4. i once had a huge meter from a pH measuring box (valve based) that would have been ideal for this app – wish i’d kept it now.

    as it is, one of those spares (+/- 30V) from a spare ham radio power supply would probably work.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s