Hi, I'm very rust with arduino and micro controllers but did a good few projects a few years back including making a coin change machine and a few other bits (http://youtu.be/luQkvtpEk6s)
I repair watches and make clocks and I've always wanted a timing machine. These are available reasonably from China, they are a very very basically a pickup microphone, listen to the tick tock and time it.
Would this be possible with an arduino? Most watches beat at between 4-8 beats per minute. We are describing a beat as a tick or then a tock.
The first job would be just listening and capturing the average beat time. The second job would then be allowing you to select the KNOWN beat from a menu and it displaying the error + or - from what it should be, a much easier value to work with as you can then adjust the watch to try and correct the error.
Any help appreciate. For the £150 for a timer of eBay, do I scrap the idea? Or, it would be a really useful tool for a clock and watch repairer so is it worth putting the time in and making this, which I'm willing to do providing I'm not going down an impossible or very difficult path.