Crazy Clock by Geppetto Electronics on Tindie

More info on COVID-19 and Shippingcustomized lavet stepper motor clock movement controllerNo shipping info available.Set destination country to see optionsShipping to starts at Free shipping is available to !Ships from This item does not ship to .More InfoBuy with confidence.Our Tindie Guarantee protects your purchase from fraud. The Crazy Clock is available with Sidereal, Martian, Lunar or Tidal clock firmware, in 12 or 24 hour movements. The Crazy Clock is available with Sidereal, Martian, Lunar or Tidal clock firmware, in 12 or 24 hour movements. Simply use the menus above to select the movement you'd like.This is a replacement controller board for a lavet stepper motor driven clock movement. They typically are in black or clear plastic inch-and-a-half square boxes with a single AA battery holder and have second hands that jump from one second to the next.This board will alter the timing of the pulses that move the second hand in various ways (depending on the firmware), while still maintaining a long-term average rate of one pulse per second (which is required for the clock to remain accurate).The board (and in turn, the clock movement) is powered by a single AA battery, which should last around 12 months or so. The clock should be accurate to within about 30 seconds per month (±10 ppm, typical for these sorts of clocks).If you buy the board by itself, you must obtain a suitable clock movement and disable its controller. You should be able to fit the Crazy Clock controller in some unused space inside the movement and it will look completely normal. All of the "alternate timebase" clocks tick regularly, but with a longer or shorter day (where a day is defined as 86400 ticks - 24 complete circuits of the minute hand).There is also a "normal" clock firmware file available on GitHub, which reverts the controller to normal behavior (86400 regular ticks per day).For those that want to experiment with the firmware, it is open source (GPL v2), and consists of a "base" of common code that sets up a 10 Hz interrupt cycle that drives the behavior of the clock. The rest is available for your code.No country selected, please select your country to see shipping options.No rates are available for shipping to .Enter your email address if you'd like to be notified when Crazy Clock can be shipped to you:Thanks! No shipping info available.Set destination country to see optionsShipping to starts at Free shipping is available to !Ships from This item does not ship to .More InfoBuy with confidence.Our Tindie Guarantee protects your purchase from fraud.