Tuesday, April 8, 2008
Tuesday, January 22, 2008
Developmental Work
Developmental work
Shaylynn Devin
Control System
| Materials list | ||||
| Item | Description | QTY | Size | Remarks |
| 1 | Phidgets motor controller | 2 | 3.6in x 3in |
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| 2 | Phidgets servo motor controller | 1 | 1.2in x 1.8in |
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| 3 | Phidgets Temperature Sensor - Thermocouple input | 1 | 1.3in x 1.8in | USB interface to k-type thermocouple |
| 4 | k-type thermocouple | 1 |
| To measure temperature |
| 5 | PVC | 1 | 6in radius x 1ft long | To house control system |
| 6 | 12V USB Hubs | 2 or 1? | 3.14in x 3.9in x 0.4in |
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| 7 | 25A power block | 2 |
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| 8 | USB 2.0 Extender Bus Powered | 1 |
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| 9 | PVC Caps | 2 | 6in radius |
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| 10 | Wire | 2 | 42ft, 14 AWG |
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| 11 | Wire | 1 | 40ft, 18 AWG |
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| 12 | Ethernet Cable RJ45 Cat 5e | 1 | 42ft |
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| 13 | Plastic sheet | 1 | 1’ x 1’ x 1/4” | To be made as racks for components to sit on it PVC housing |
| 14 | Epoxy | 1 | Quart | For waterproofing |
| 15 | |
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| Supply List | ||||
| Item | Description | QTY | Size | Remarks |
| 1 | Electrical Tape | 1 roll |
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| 2 | Solder | 1 roll |
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| 3 | Windows based laptop installed with Microsoft Robotics | 1 |
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| 4 | Xbox 360 Controller- wired | 1 |
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| 5 | Cameras | 2 |
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| 6 | Monitors | 2 | 12in x 12in |
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| 7 | 12V battery | 1 |
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| 8 | USB cable | 2 | 6ft |
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| 9 | Silica Gel Desiccants | 5 | Individual packets found in shoe boxes, etc. | To reduce condensation in housing |
| Parts List | ||||
| Item | Description | QTY | Size | Remarks |
| 1 | Tether | 1 | 42ft | Consists of power, Ethernet and 3 video feeds |
| 2 | Computer System | 1 |
| Consists of all parts on land |
| 3 | Onboard System | 1 | 6in x 6in x 1ft | Is made up of all parts onboard inside PVC pipe. |
Plan of Procedures
Steps:
1. Connect two 14 AWG wires to 12v Battery and then to respective power blocks(red or black)
2. Then connect 18AWG wires to respective places that need power (Each motor controller, USB Hub and Cameras)
3. After connecting the 18AWG power wires to the motor controllers connect 18 AWG wires from them to the motors they are controlling
4. Connect the Video wires from the cameras to the monitors.
5. Connect USB wires from motor controllers and Phidget Temperature Sensor - Thermocouple input to the USB Hub located onboard
6. Connect one USB from the USB Hub to the USB Extender also located onboard
7. Use an Ethernet wire to connect to the other end of the USB Extender located on shore. This wire will be part of the tether
8. Connect a USB from the second end of the USB Extender to laptop.
9. Also connect Xbox controller to laptop and use Microsoft Robotics to configure controller to move the ROV in all directions, forward, backward, left right, up, down, and also be able to controller the arm.
10. For all of these connection refer to figure 2
11. Solder all of these connections.
12. Cute plastic piece into sizes specified in Parts list
13. Drill holes into plastic pieces to allow water to drip through if need be
14. Spray with silicon spray or coat in components in epoxy to waterproof before mounting on plastic pieces in housing
15. Place all of the components that are onboard the ROV on either one of the plastic pieces as shown in _____.
16. Place these pieces of plastic with mounted components in tube as shown in ______ and also place silica gel desiccants in as shown.
17. Drill and inch wide hole into one of the PVC caps
18. Permanently seal this cap onto PVC tube.
19. Have all wires going back to the shore or to the motors or cameras run through this hole.
20. Make sure cap on other end is as tight as possible without any places for leaks. This end will be used to open in case there is a problem with the wiring and for the safety check to take place prior to the ROV entering the water.
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