Wondering if you got this figured out?
Also echoing Victorbaezaevias question as I cannot seem to find a North American source.
Did you find anything Victorbaezaevia?
My ring gear is 178 tooth (both my wife and I counted it) and here is the math I came up with,
David.
Where did you order this gear? Site? Part number?
Quotes here in Canada for the same or very similar item were about $400.00 CDN ($320.00 USD).
Ordering it from Germany was $170.00 CDN ($135.00 USD)
Here is the receipt, should have all the info on it you are looking for.
David.
Yes, no more jitters, just needed to tweak the settings.
See my message above for all the info about the ring and where I purchased it from.
My controller and motors were delivered yesterday. A quick hookup on the desk taught me that the controller and motor were working properly. Yay!
I plan to use two motors, a 2828 (Pololu 150:1 motor with encoder) and a 2829 (the same motor but without encoder) and connect them in series. The A4970 H-bridge driver is not that strong, and even at 6 Volts, the motor can still produce enough torque to exceed the peak rating of the gearbox. So two motors in series will give me a much more robust drive. Series connected DC motors are inherently load sharing, so mounting them at 180 degrees across the slewing ring should work well.
I found that the Pololu 4697 (the 24V version of the 150:1 motor with encoder) actually comes close to the original Phidgets motor when run at 12V, so if you use one motor, that might be the better choice, also due to the much lower current draw (the A4970 driver is rated for 750 mA continuous/1A peak).
I plan to use two motors, a 2828 (Pololu 150:1 motor with encoder) and a 2829 (the same motor but without encoder) and connect them in series. The A4970 H-bridge driver is not that strong, and even at 6 Volts, the motor can still produce enough torque to exceed the peak rating of the gearbox. So two motors in series will give me a much more robust drive. Series connected DC motors are inherently load sharing, so mounting them at 180 degrees across the slewing ring should work well.
I found that the Pololu 4697 (the 24V version of the 150:1 motor with encoder) actually comes close to the original Phidgets motor when run at 12V, so if you use one motor, that might be the better choice, also due to the much lower current draw (the A4970 driver is rated for 750 mA continuous/1A peak).