The tracking action of the barn door mount is achieved by lifting the upper board at the correct rate by means of a motor driving a nut on a threaded rod.
Motorised barn door mount.
Make a small pulley for it using a 1 1 8 inch diameter hardwood dowelrod.
Fasten this curved bolt on one of the barn doors 11 43 inches from the hinge and make sure it travels smoothly through a hole in the other door.
The nyx tracker is a motorized barn door tracker used for astrophotography.
Inexpensive and budget friendly it is useful for people interested in astrophotography but not ready to spend on expensive equipment.
First carve a 1 8thinch wide groove about 3 32ndinch deep around the circumference of the dowel rod.
The mount i constructed is motorized.
The motor was sourced from american science and surplus for about 2 50 and is a 1 rpm ac motor.
This tracking mount follows the stars as they move through the sky.
A key part of the assembly is the drive nut which couples the large gear to the threaded rod.
Make the grooveabout 1 4 inch from the end of the long dowel.
While there are many commercial mounts to track the sky here we will discuss a simple way to construct a mount that will costs less than 100 complete with a motor to drive the screw.
I am not aware of a stock number but the motor is marked as follows.
First cut the 500mm length in half and mount the hinge.
The on off on switch is going to be used to switch the motion of the motor between clockwise stopped and anti clockwise.
Make sure everything is square and moves freely clap the 2 hinged boards together and shout action a few times like they do when making movies if it makes a nice clack sound it should work well for a star tracker now measure 228 55mm from the center of the hinge pin down the middle of the board and mark the drive rod holes do this on.
The motor comes with a one eighth inch steel shaft.
Don t get off of your tractor.
The two switches are going to be used to provide control parameters to the software running on the arduino.
Singer controls division model 414 349 20 115v 60 hz 3w 1 rpm cw.
For the barn door mount though the rate of rotation is so slow that 8 point microstepping is more than ok.
Great for vehicular sliding door applications the edison will civilize your sliding door operation like never before.
Don t get out of your car.
Mount a camera swivel post on the top board stick it on a camera tripod line the hinges up to polaris and you re ready to go.
The barn door mount gets it s name from the fact that it s basically a wooden board with a door hinge.
