Difference between revisions of "Metal antenna rotator"

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(Test and setup)
Line 23: Line 23:
  
 
== Communication test and setup ==
 
== Communication test and setup ==
<nowiki>rotctl -r /dev/ttyUSB1 -m 202 -s 19200 -t10</nowiki>
 
  
 +
Open a terminal and start the rotctld (the rotator controller ''daemon''):
 +
<pre>
 +
rotctld -vvvvv -T 127.0.0.1 -r /dev/ttyUSB1 -m 202 -s 19200 -t10
 +
</pre>
  
-t is to use \n as end of cmd
+
The parameter -t is to use ''\n'' as end of command.
 +
The parameter -vvvvv activates the verbosity - remove some to get less infos.
  
 +
Open another terminal and start the rotctl client:
 +
<pre>
 +
rotctl -m 2 -r 127.0.0.1
 +
</pre>
  
To test you will need to :
+
To test you will need to:
<nowiki>type P<enter></nowiki>
+
<pre>
 +
Rotator command: P<enter>
 +
</pre>
  
then give position
+
then enter target position:
  
The motors should move, if not check connexions.
+
<pre>
 +
Azimuth: 360<enter>
 +
Elevation: 90<enter>
 +
</pre>
  
 +
Or shorten this to:
 +
<pre>
 +
Rotator command: P 180 090<enter>
 +
</pre>
 +
 +
The motors should move, if not: check connections.
  
 
Then you have to check that the endstop are working:
 
Then you have to check that the endstop are working:
  
<nowiki>type IP1<enter></nowiki>
+
<pre>
 
+
Rotator command: IP1<enter>
<nowiki>type IP2<enter></nowiki>
+
Rotator command: IP2<enter>
 +
</pre>
  
If the result end with ',0', and the endstop is not activated, its good. (if it's not good, revese them in the config)
+
If the result ends with ',0', and the endstop is not activated, its good. (if it's not good, reverse them in the config)
  
 
If the two endstops are at 0 when reset, the homing will be peformed.
 
If the two endstops are at 0 when reset, the homing will be peformed.
Homing is alway in the opposide way of the motor (-max angle)
+
Homing is always in the opposite way of the motor (-max angle)

Revision as of 18:03, 28 May 2018

To build this metal antenna rotator you will need a welder.


Bill of materials

Part Qty Source Price per Unit ($)
Nema23 stepper motor - Wormgear 60:1 2 [1][2]
Bearing for the az axis 100x135x25 mm 1 [3]
Stepper motor driver 2 [4]



Communication test and setup

Open a terminal and start the rotctld (the rotator controller daemon):

 rotctld -vvvvv -T 127.0.0.1 -r /dev/ttyUSB1 -m 202 -s 19200 -t10

The parameter -t is to use \n as end of command. The parameter -vvvvv activates the verbosity - remove some to get less infos.

Open another terminal and start the rotctl client:

 rotctl -m 2 -r 127.0.0.1

To test you will need to:

 Rotator command: P<enter>

then enter target position:

 Azimuth: 360<enter>
 Elevation: 90<enter>

Or shorten this to:

 Rotator command: P 180 090<enter>

The motors should move, if not: check connections.

Then you have to check that the endstop are working:

 Rotator command: IP1<enter>
 Rotator command: IP2<enter>

If the result ends with ',0', and the endstop is not activated, its good. (if it's not good, reverse them in the config)

If the two endstops are at 0 when reset, the homing will be peformed. Homing is always in the opposite way of the motor (-max angle)