jase1973

There are 3D printables on thingiverse for NEMA 17 mounts for both the EQ5 and the EQ3-2 (If you know anyone with a 3d printer)

I thought skywatchers were white, it it marked skywatcher in any way?

question for you re your mount, did you get it new? who made it? I assumed mine was Orion as it came with my 2nd hand scope.

http://www.avalon-instruments.com/support/13-troubleshooting/104-polar-alignment-using-the-new-skywatcher-polar-scope how about the 4 stars that are listed here for polar allignment?

they cater for the southern polar axis too...

Question, do you have a polarscope. I'm looking for one but havn't found one to fit yet.

just tested mine on the breadboard, inbetween the clouds and seems to be staying on track so far. need to solder it up and make a box. I just found visual frustrating due to the speed things move and not always being able to reach the slowmo control to keep things centered. Startests are suddenly easier Thanks for the handy project. VIDEO0042.mp4

It's an interim solution while I am putting an rduinoscope together. http://rduinoscope.byethost24.com/rDUINO_step1.html

I've revised the code to suit my application and my irresistible urge to change things. I've used an 8255 driver as I had them to hand and I've wired the microstepping up to the arduino so I can see what difference a change in stepsize makes and it's easy to reverse in code the motor direction after soldering everything. this particular code is using 1/16th steps and a 16t and 40t pulleys, so needs to step 2.5x faster #define STEP_PIN 2 #define DIR_PIN 3 #define Mzero 10 #define Mone 11 #define Mtwo 12 #define Denable 5 void setup() { digitalWrite(DIR_PIN, HIGH); digitalWrite(STEP_PIN, LOW); pinMode(DIR_PIN, OUTPUT); pinMode(STEP_PIN, OUTPUT); digitalWrite(Mzero, LOW); digitalWrite(Mone, LOW); digitalWrite(Mtwo, HIGH); digitalWrite(Denable, LOW); } void loop() { digitalWrite(STEP_PIN,HIGH); delay(37); digitalWrite(STEP_PIN,LOW); delay (38); }

no problem. I've gotten past that now but I've killed 2 drivers by being silly. Are you still using it or have you moved on. I'm just trying to get something going while I build an rduinoscope controller.

Nice work, I can't tell from the pictures, but did you tie ms2 high to enable quarter stepping?

thanks for that, what was the inside diameter of the assembled ring?

many thanks, I'm just waiting for them to process my login

Hi John, Ive taken a look as I'm intersted in some rings too. I can't see a way to download as stl. any suggestions?