Then i let it run with my tracker for a while and did some least squares fitting to see how it was working.
Barn door tracker arduino.
Note also the red dot sight for alignment.
I know the arduino will be able to handle the stepper motor with a stepper motor driver but is the arduino uno powerful enough and have enough inputs for adding a lcd screen to it and some buttons for changing input values.
One of the comments from reddit.
Hi i am a retired electro optical and controls systems design engineer having also served an apprenticeship as an optical instrument maker in the early 60 s.
David hash s arduino barn door tracker university student david hash now an aerospace engineer updated peterson s build with an arduino pro microcontroller 1 8 stepper and pololu microstepping driver board to give 3 200 microsteps per rotation figure b.
You can however make a 6 wide board and use a 4 hinge but you may give up some stability.
Arduino stepper motor control john barton wood april 4 2014 at 8 10 pm.
The arduino board and its associated shield are mounted on the base of the barn door tracker.
That means we want to spin our barn door tracker at a rate of 360 degrees every 24 hours which comes out to be 0 25 degrees per minute.
Cut your two blocks of wood pieces into 13 x 4 pieces.
Hi the winter nights are on me and my mind has turned to getting good images of the milky way and other faint objects.
Calibrating the barn door tracker with a digital level.
I printed the barn door tracker from thingiverse but i am making some modifications to it mainly by using a raspberry pi instead of an arduino because it will both be connected to the tracker and my camera personally i m more interested in this version i really want to build this.
The arduino board and additional circuitry can be powered with a 7 2 volt nicd battery for portability or a standard plug in power supply.
So i measured a nice and constant 7 255e 5 radians second over 10 minutes.
19 thoughts on building a barn door mount part 1.
Star tracker using 28byj 48 stepper motor arduino and lcd display to vary speed.
Acquired data with least squares linear fit.