Difference between revisions of "Metal antenna rotator"
From SatNOGS Wiki
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== Communication test and setup == | == Communication test and setup == | ||
| − | |||
| + | 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 | + | 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: |
| − | < | + | <pre> |
| + | Rotator command: P<enter> | ||
| + | </pre> | ||
| − | then | + | then enter target position: |
| − | + | <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: | ||
| − | < | + | <pre> |
| − | + | Rotator command: IP1<enter> | |
| − | + | Rotator command: IP2<enter> | |
| + | </pre> | ||
| − | If the result | + | 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 | + | 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)
