Difference between revisions of "Metal antenna rotator"
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| + | ==Introduction== | ||
| + | |||
To build this metal antenna rotator you will need a welder. | To build this metal antenna rotator you will need a welder. | ||
| + | ==Bill of materials== | ||
| + | {| {{table}} | ||
| + | | align="center" style="background:#f0f0f0;" |'''Part''' | ||
| + | | align="center" style="background:#f0f0f0;" |'''Qty''' | ||
| + | | align="center" style="background:#f0f0f0;" |'''Source''' | ||
| + | | align="center" style="background:#f0f0f0;" |'''Price per Unit ($)''' | ||
| + | |- | ||
| + | |<span>Nema23 stepper motor - Wormgear 60:1</span>||2||[https://aliexpress.com/item/Ratio-20-1-self-lock-High-Torque-L56mm-NEMA23-3A-RV30-Turbine-Worm-Gearbox-Geared/32681621498.html][https://aliexpress.com/item/Ratio-20-1-self-lock-High-Torque-L112mm-NEMA23-4-2A-RV30-Turbine-Worm-Gearbox/32681645351.html]|| | ||
| + | |- | ||
| + | |<span>Bearing for the az axis 100x135x25 mm</span>||1||[https://aliexpress.com/item/51120-Thrust-Bearing-100x135x25-mm-ABEC-1-1-PC-Axial-51120-Thrust-Ball-Bearings-8120/32813388761.html]|| | ||
| + | |- | ||
| + | |<span>Stepper motor driver</span>||2||[https://aliexpress.com/item/2-Phase-Stepper-Driver-MA860-DSP-24V-80VDC-or-VAC16-70VAC-Output-6A-Current-NEMA-34/32785076340.html]|| | ||
| + | |- | ||
| + | |} | ||
| + | |||
| + | ==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> | ||
| + | |||
| + | 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: | ||
| + | <pre> | ||
| + | Rotator command: P<enter> | ||
| + | </pre> | ||
| + | |||
| + | 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: | ||
| + | <pre> | ||
| + | Rotator command: IP1<enter> | ||
| + | Rotator command: IP2<enter> | ||
| + | </pre> | ||
| − | + | 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 performed. | |
| + | Homing is always in the opposite way of the motor (-max angle) | ||
| − | + | [[Category:Hardware]] | |
| + | [[Category:Build]] | ||
| + | [[Category:Rotator]] | ||
Latest revision as of 01:31, 24 February 2021
Introduction
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 performed. Homing is always in the opposite way of the motor (-max angle)
