dome_control
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| dome_control [2024/02/09 05:45] – holtz | dome_control [2024/02/10 19:43] (current) – holtz | ||
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| The dome encoder gets +5V and ground from the RPi, and receives 5VDC signals from the A and B phases of the quadrature encoder. These are wired into RPi GPIO ports through a level converter that converts 5V to 3.3V. | The dome encoder gets +5V and ground from the RPi, and receives 5VDC signals from the A and B phases of the quadrature encoder. These are wired into RPi GPIO ports through a level converter that converts 5V to 3.3V. | ||
| DC +5 and ground are connected to RPi power, A and B outputs are connected to level shifter input channels; level shifter output channels are connected to RPi GPIO pins. | DC +5 and ground are connected to RPi power, A and B outputs are connected to level shifter input channels; level shifter output channels are connected to RPi GPIO pins. | ||
| - | | Encoder pin | function | D connector pin | D connector color | connect | level shifter wire color | | + | | Encoder pin | function |
| - | | 1 | +5VDC | 2 | red | RPi +5V | | | + | | 1 | +5VDC | red | 2 | red | RPi +5V | | |
| - | | 2 | gnd | 8 | wht | RPi Gnd | | | + | | 2 | gnd | org | 8 | wht | RPi Gnd | | |
| - | | 3 | Bbar | 3 | org | | | | + | | 3 | Bbar | brn | 3 | org | | | |
| - | | 4 | B | 7 | vio | level B2 | grn | | + | | 4 | B | blk | 7 | vio | level B2 | grn | |
| - | | 5 | Zbar | 5 | grn | | | | + | | 5 | Zbar | grn | 5 | grn | | | |
| - | | 6 | Z | 9 | wht(outer) | | | | + | | 6 | Z | vio | 9 | wht(outer) | | | |
| - | | 7 | Abar| 1 | brn | | | | + | | 7 | Abar | blu | 1 | brn | | | |
| - | | 8 | A | 6 | blu | level B1 | blu | | + | | 8 | A | yel | 6 | blu | level B1 | blu | |
| The home sensor gets +5VDC and ground from the RPi, and receives a signal on a GPIO port that is normally low, but goes high when the home magnet is in proximity to the sensor.S | The home sensor gets +5VDC and ground from the RPi, and receives a signal on a GPIO port that is normally low, but goes high when the home magnet is in proximity to the sensor.S | ||
| | Sensor wire | function | circular connector pin | color | level shifter | color| | | Sensor wire | function | circular connector pin | color | level shifter | color| | ||
| - | | | | 1 | wht | | | | + | | |
| - | | red | gnd | 2 | blk | RPi gnd | | | + | | red | gnd | 2 | blk | RPi gnd | | |
| | blk | signal | 3 | brn | level B3 | gry | | | blk | signal | 3 | brn | level B3 | gry | | ||
| - | | grn | +DC | 4 | red | RPi +5V | | | + | | grn | +DC | 4 | red | RPi +5V | | |
| Low-level functions are implemented in the APOAshDome.py module. An ASCOM Alpaca interface was implemented using the templates from the [[https:// | Low-level functions are implemented in the APOAshDome.py module. An ASCOM Alpaca interface was implemented using the templates from the [[https:// | ||
dome_control.1707457555.txt.gz · Last modified: 2024/02/09 05:45 by holtz