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.