Welcome, Guest. Please login or register.

Username: Password:

Author Topic: 2208's are great ,but!  (Read 1817 times)

telfish

  • Full Member
  • ***
  • Posts: 29
    • View Profile
2208's are great ,but!
« on: February 08, 2018, 20:28:25 »
Fitted my long awaited 2208's to the Atlas ramps setup, This has been performing perfectly on the 8825's if somewhat noisy.

The 2208's cured all that and the mount is now pretty much silent in slew and track. But and there is always one. Is that slews and probably tracking is now running 100% more distance than before. So if I am pointed at the home position and ask it to go due East I end up with both axes doubling the distance exactly and the scope points down to the ground.

I removed all the bridging clips on the ramps board and am running it in default mode.

Any ideas on this one?


Terry
Logged

telfish

  • Full Member
  • ***
  • Posts: 29
    • View Profile
Re: 2208's are great ,but!
« Reply #1 on: February 08, 2018, 21:45:19 »
OK I think I sorted the issue. The 2208 is expecting  step size of 16 I had 32, I am guessing the extra steps are interpolated wrongly and you get a double step when it is converted to 256 steps. Now slewing right and tracking right.

If this works I will take the stock board out of my other Atlas and Eq it cause it's like night and day smoothness and noise wise.
Logged