276°
Posted 20 hours ago

Sterling CLB15L2 Clock Chain, Brass

£5.155£10.31Clearance
ZTS2023's avatar
Shared by
ZTS2023
Joined in 2023
82
63

About this deal

Suppose we want to drive the hanged chain with a motor, the torque required is very small as the weight of the chain we want to pull up is the same as the weight of the chain pulling down. I then decided to get rid of it as it will potentially generate some heat inside the bowl as well as perturbing the other electronics components due to its high electromagnetism field. It now become clear that to make the motor produce 1 turn at the end of the shaft, we will need to send 2048 signal. hour is defined by the gear total ratio between how much link of the chain there is between two numbers, the gear on the shaft driving the chain and the gear ratio of the stepper motor.

As the chain advances in age, the links may separate a bit so it is not always easy to get the correct number when counting. Do your best to get the one that is the closest to the number of links that you were able to count. This is the hardest weight to deal with out of the three. Try pulling down some while swinging the pendulum. This stepper motor has the particularity to have a built in reduction gear box on the end of the shaft (2048:1), very useful has it will become handy to gain more torque.

There is also another way to go about this task, which may be easier. If the movement was made in Germany, post WW2, we can safely make the following assumptions. The diameter of the bob in another piece of information that needs to be known. The bob is the round disk at the bottom of the pendulum. The weight chart To make thing simpler for the electronic design, I have decided to send one pulse to the stepper motor every one second. This will also sound cool when we’ll here the small clics* coming from the gear box engaging the gear teeth every second, it feels reliable.

Asda Great Deal

Free UK shipping. 15 day free returns.
Community Updates
*So you can easily identify outgoing links on our site, we've marked them with an "*" symbol. Links on our site are monetised, but this never affects which deals get posted. Find more info in our FAQs and About Us page.
New Comment