- Mon Oct 15, 2018 1:45 pm
#200673
Hello Everyone sorry I am new to all this.
Im planning on building something called a barn-door sky tracker. fundamentally its a camera mount that will rotate with the axis of the earths rotation to take longer exposures with a DSLR of the night sky. Its a simple design that has 2 platforms hinged together at one end and on the other end there is a curved bolt. i want to use a high torque motor to push a DSLR and maybe a heavy lens 6lbs or so. So now there issue I am having is the fact that I need to get the drive down to a 1 rpm. I plan on using either a 4 or a 6 rpm motor with a gear mounted on it and a second gear mounted to a nut that will thread on a curved bolt. I also plan on controlling the motor by a dc-dc buck converter to adjust the output speed to match that 1rpm I need. the issue I am having is if I say I get a 3-12v 4rpm motor with a 16 tooth gear and a 64 tooth gear mounted on the bolt I equal 1rpm however how much will load effect that rotation speed and if I used 9v to power it how will it preform as far as speed goes. Im leaning on giving myself a safe zone on using a 6rpm gear and using the same gear ratio and adjust the voltage down to 1rpm. As far as power source im thinking of using either a 11.1 3 cell lipo or a 4 cell lipo or even run off 12v car power source. There are a few tutorials that explain the project but none of them have been good at sourcing drive train or well covering the electronics of it. Thanks much in advance.
Im planning on building something called a barn-door sky tracker. fundamentally its a camera mount that will rotate with the axis of the earths rotation to take longer exposures with a DSLR of the night sky. Its a simple design that has 2 platforms hinged together at one end and on the other end there is a curved bolt. i want to use a high torque motor to push a DSLR and maybe a heavy lens 6lbs or so. So now there issue I am having is the fact that I need to get the drive down to a 1 rpm. I plan on using either a 4 or a 6 rpm motor with a gear mounted on it and a second gear mounted to a nut that will thread on a curved bolt. I also plan on controlling the motor by a dc-dc buck converter to adjust the output speed to match that 1rpm I need. the issue I am having is if I say I get a 3-12v 4rpm motor with a 16 tooth gear and a 64 tooth gear mounted on the bolt I equal 1rpm however how much will load effect that rotation speed and if I used 9v to power it how will it preform as far as speed goes. Im leaning on giving myself a safe zone on using a 6rpm gear and using the same gear ratio and adjust the voltage down to 1rpm. As far as power source im thinking of using either a 11.1 3 cell lipo or a 4 cell lipo or even run off 12v car power source. There are a few tutorials that explain the project but none of them have been good at sourcing drive train or well covering the electronics of it. Thanks much in advance.