Yes still using the small N20 motor but with the original spec the gears would strip, so found an alternative on Aliexpress. It has a slightly higher rpm and less gears. The motor runs on a 3v lithium battery situated under the ballast weight. A mercury tilt switch located at the end of the arm activates the motor when the arm drops about 10 to 15 degrees from just above horizontal. The ballast weight is just pla, apart from the single CR123A battery there is no additional weight.
The clock has been running for a few months now and has proved to be reliable.
Hi Krys,
Sorry for the delay in replying.
Yes still using the small N20 motor but with the original spec the gears would strip, so found an alternative on Aliexpress. It has a slightly higher rpm and less gears. The motor runs on a 3v lithium battery situated under the ballast weight. A mercury tilt switch located at the end of the arm activates the motor when the arm drops about 10 to 15 degrees from just above horizontal. The ballast weight is just pla, apart from the single CR123A battery there is no additional weight.
The clock has been running for a few months now and has proved to be reliable.
Bernard