Tredecimus is a spherical weight driven clock.

       The pendulum is impulsed every 8 seconds.

        A ball bearing drops every 4 mins 10 secs and is then

lifted to the top of the drive wheel.

        The motor used is a good as silent stepper motor which

is controlled by an Arduino Nano and silentstepstick .

        I will be offering the Tredecimus as a full kit with DXF plans coming much later.

        I can not say specifically when it will be available as it is a complex clock which

needs a very detailed construction manual as well as quite a few tutorial videos

which require a lot of time to produce.