chemistorge

Code now updated to include any number for filters. Change the following settings to suit your setup // SETTINGS - MAIN PARAMETERS #define stepsPerRevolution 2048 //set number motor steps for wheel to rotate once #define numberOfFilters 5 #define offSetResolution 5 //number of motor steps for one offset change #define homingOffsetSteps 56 // number of steps from homing point to centre of first filter #define buzzerConnected 0 //1 to enable on pin 2, 0 to disable #define ledConnected 1 //1 to enable on pin 3, 0 to disable // SETTINGS - MOTOR #define IN1 9 // unipolar motor pins (set all pins) #define IN2 6 //motor driver step pin #define IN3 8 #define IN4 7 //motor driver dir pin #define motorType 1 //1 for unipolar, 2 for motor drive board (e.g. A4988) // SETTINGS - HALL SENSOR #define analogSensorThreshold 430 // set the threshold below which the homing sensor is triggered #define HALLSENSORTYPE 2 // SET to 1 for ANALOG HALL Sensor, CHANGE to 2 for DIGITAL HALL SENSOR #define HALLACTIVETYPE 2 // SET to 1 for ACTIVE HIGH Digital Sensor, CHANGE to 2 for ACTIVE LOW digital Sensor

Hi this is possible, the current code is hard coded for 5 in several places (bad me), but I will try and have time to update to a more general code for filter numbers up to 8. Do the official filter wheels do magnetic sensing?

Line 8: the 4 sets the mode of the Accelstepper driver to Unipolar. Line 22: #define analogSensorThreshold 430 // set the threshold below which the homing sensor is triggered set threshold for trigger if using an analog Hall Sensor (analog is 0-1023), with no magnet it will read ~512. #define HALLSENSORTYPE 2 // SET to 1 for ANALOG HALL Sensor, CHANGE to 2 for DIGITAL HALL SENSOR #define HALLACTIVETYPE 2 // SET to 1 for ACTIVE HIGH Digital Sensor, CHANGE to 2 for ACTIVE LOW digital Sensor change to suit hall sensor type. ine 26 const int filterPos[] = {0, 56, 466, 876, 1286, 1696}; //Rough alignment of filterPos rough position of filter positions from Hall Sensor (sensor, filter1, filter2, filter3, filter4, filter5). used to set rough position of filters in motor steps from home. The position offsets are later used to fine tune these values. line 85 stepper.runToNewPosition(stepper.currentPosition() - 500); //back magnet off sensor used to move the magnet off the sensors so that if by chance the sensor and magent are aligned we can remove the signal stepper.moveTo(3000); //set move to as 3000 (one rotation is ~2000 steps so if not homed by then raise error. do just over one revolution of the filter wheel looking for sensor signal. We must find the homing signal by then.

Thank you, I like all controls in one place for my Astro rig and also if I use a remote set up I couldn’t access the dew controller. That was the reason for writing the driver. I hope others find it useful. After talking with Jasem (Indi) the driver will be available from source (Indi Github) or through the nightly builds (PPA details) and in the upcoming stable release on 31st March.

I have just finished writing an Indi driver that implements all features of the mydewcontrollerpro 3 fw 340+. The driver is now included in indiLib under auxiliary drivers.

I actually used duct tape for the focus ring on the lens for the time lapse. My children were around and one small hand could spelt an out of focus horror!!!!

No, standard photo tripod, re-centre between captures. Then process in PIPP to centre and crop frames plus produce video.

Isn't that what duct tape is for?

My Efforts: Still: Canon 6d, Bresser 127 mak (1900/127), 0.5 x reducer - supplied filter Time lapse (Canon 80d, 15 secs interval, 400 mm lens, Bader Astro film). Time lapse.m4v

I like the effect!! This is my effort: Time lapse.m4v Cloudy at the end.

Hi Sorry, I attached the github html download not the correct xml file. Here is the correct XML file.AstroThreads.xml

just to add my experience: I have printed threads, 1.25", 2" and M42. In my experience internal threads tend to shrink a little making them tight. To alleviate this I created an 8G tolerance for internal threads to account for this. I also print if possible with the threads around the z-axis with a 0.1 mm layer height. I have included my fusion 360 thread file with 8G tolerances Astronomy Fusion 360 Custom Threads.xml

ooh, not seen that one..A 3d printer has been very useful, I have printed... SWeq5 motor mounts, dew shield, m42, m48 adaptors, dove tails, flats boxes, screen bezels, lens adaptors for asi294, telescope back plates........and things I can't remember. Before I had a 3d printer, I didn't know I needed one, but now I do!!!!

I own an Ender 3 v2, and drilling plastic boxes is thankfully a thing of the past. Now I just boot up Fusion 360, find my calipers, grab a coffee and an hour later off to the printer and a while later I have the perfect box.

Hi, you just need to cut the traces and then use small wire to jump across to nearby track.