Waterproof ROV Tether control box and reel cable management additions for use with an ROV

Waterproof ROV Tether control box and reel cable management additions for use with an ROV

prusaprinters

<p>This is a set of parts to turn a Tecnec Jackreel 4 ( Also known as a Shill GT310 reel in the U.K.) into a full featured ROV tether interface using the Blue robotics Fathom line of tether extenders. It should fit a Fathom S or X board, I have tested it with a fathom X. There are two variants here, a waterproof version with waterproof connectors, and a simpler non waterproof version.</p> <p>Build thread is here<br/> <a href="http://discuss.bluerobotics.com/t/my-tether-spool/884">http://discuss.bluerobotics.com/t/my-tether-spool/884</a></p> <h3>Print instructions</h3><p>Unassociated tags: blue robotics</p> <h3>Category: Robotics Summary</h3> <p>This is a set of parts to turn a Tecnec Jackreel 4 ( Also known as a Shill GT310 reel in the U.K.) into a full featured ROV tether interface using the Blue robotics Fathom line of tether extenders. It should fit a Fathom S or X board, I have tested it with a fathom X. There are two variants here, a waterproof version with waterproof connectors, and a simpler non waterproof version.</p> <p>Build thread is here<br/> <a href="http://discuss.bluerobotics.com/t/my-tether-spool/884">http://discuss.bluerobotics.com/t/my-tether-spool/884</a></p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong> LulzBot</p> <p><strong>Printer:</strong> TAZ 5</p> <p><strong>Rafts:</strong> No</p> <p><strong>Supports:</strong> No</p> <p><strong>Resolution:</strong> 0.5mm nozzle</p> <p><strong>Infill:</strong> 85% or better</p> <p><strong>Notes:</strong></p> <p>This was printed with ABS, other materials would also work but as a dock or a boat hull can get very warm, i would avoid PLA just due to the melt temperature issue.</p> <h3> Instructions</h3> <p>To build one of these, you will need a tecnec Jack reel 4 ( I bought this one <a href="https://www.bhphotovideo.com/c/product/1008492-REG/hybrid_fiber_systems_jackreel_f4_high_performance_fiber_optic.html">https://www.bhphotovideo.com/c/product/1008492-REG/hybrid\_fiber\_systems\_jackreel\_f4\_high\_performance\_fiber\_optic.html</a> )<br/> 16 M3 heat set inserts ( <a href="https://www.mcmaster.com/#94180a331/=17gvlmb">https://www.mcmaster.com/#94180a331/=17gvlmb</a> )<br/> a variaty of m3 stainless bolts (should be 12 8mm ones and 4 10mm ones) and 4 12mm M3 botls and nuts for the cable stop. You will also need 4 m3 12mm long bolts and nuts to hold the cable roller and the velcro bit to the jackreel<br/> 6 13mm OD 4mm ID stainless steel bearings. (something like this should work <a href="https://www.mcmaster.com/#7804k103/=17gvmvh">https://www.mcmaster.com/#7804k103/=17gvmvh</a> )<br/> 2 sections of 16MM OD X 13MM ID (1.5MM WALL) 316 SEAMLESS STAINLESS STEEL TUBE X 200MM cut to 104mm long lengths. (I used these ones because I couldn't find thicker ones locally, but they took forever to get here <a href="http://www.ebay.com/itm/322462598200?_trksid=p2060353.m2749.l2649&amp;ssPageName=STRK%3AMEBIDX%3AIT">http://www.ebay.com/itm/322462598200?\_trksid=p2060353.m2749.l2649&amp;ssPageName=STRK%3AMEBIDX%3AIT</a>)<br/> 2x 13 mm overall lenght M4 bolts and nuts for the inner bearings and 4x 32mm long M4 bolts and nuts for the rollers<br/> the non waterproof box uses rivets to attach. the waterproof one is designed to use stainless steel plastic screws<br/> You will need 1 RCA to 2 wire vga balun (well technically 2, since you'll want one on the other end as well) You can optionally just fill that hole in instead if you don't wish to use a secondary camera feed<br/> You will also need 4 m3 bolt sized 1/8" plastic spacer standoff things to move the Fathom board away from the brass inserts.<br/> a 50mm section of blue robotics tether <a href="http://www.bluerobotics.com/store/cables/fathom-tether-nb-4p-26awg-r1/">http://www.bluerobotics.com/store/cables/fathom-tether-nb-4p-26awg-r1/</a> or whichever other cable you would like to use. The cable stop and rollers are sized for that cable though.<br/> a 6 or 8 wire slip ring of some sort, I used this one:<br/> <a href="http://www.ebay.com/itm/141778020060?_trksid=p2060353.m2749.l2649&amp;ssPageName=STRK%3AMEBIDX%3AIT">http://www.ebay.com/itm/141778020060?\_trksid=p2060353.m2749.l2649&amp;ssPageName=STRK%3AMEBIDX%3AIT</a><br/> For the waterproof version you will also need RTV or clear silicone<br/> a "NETWORK TECHNOLOGIES case side waterproof rj45 connector with jack N cap " (no idea where to get those, I bought one on Ebay Possibly part numbers RJ45-5EWTP-CS-JCK RJ45-5EWTP-CB and RJ45-5EWTP-CAP (this looks to be the same thing <a href="http://www.ebay.com/itm/RJ45-Ethernet-LAN-Network-AP-Plug-Jack-Socket-Connector-8-Core-Waterproof-IP68-/291866258836?hash=item43f495ad94:g:uZwAAOSwFV9Xzo7M">http://www.ebay.com/itm/RJ45-Ethernet-LAN-Network-AP-Plug-Jack-Socket-Connector-8-Core-Waterproof-IP68-/291866258836?hash=item43f495ad94:g:uZwAAOSwFV9Xzo7M</a>)<br/> and a waterproof USB mini cable interface. I actually have another one on the way with the pigtail since I can't find a USB mini male male cable in a short length anywhere. But for now this one worls <a href="http://www.ebay.com/itm/220627320201?_trksid=p2060353.m2749.l2649&amp;ssPageName=STRK%3AMEBIDX%3AIT">http://www.ebay.com/itm/220627320201?\_trksid=p2060353.m2749.l2649&amp;ssPageName=STRK%3AMEBIDX%3AIT</a> (that is for powering the Fathom board, you could also run 2 wires to the battery contact using that hole instead.</p> <p>Everything should print without support.</p> <p>Assembly:<br/> Insert heat set inserts everywhere that looks like it needs one, using the pictures as guides. Install the bearings in the cable roller sides first, then insert the longer bolts and last 4 bearings for the main rollers. Cut the rollers to length using a tubing cutter, clean up the inside edge to ensure it fits over the bearing, then bolt the assembly togherer. Use the upper frame to locate the holes you need to drill in the jack wheel handle and then bolt that on. repeat that with the velcro cable holder on the other side.</p> <p>For the box, assuming you are using the waterproof version, use the box held flush against the back of the handle so it isn't obstructing the roller to locate and mark the 3 holes for the plastic screws, and then drill a small pilot hole. Then mount the box using 3 screws</p> <p>Next, drill a 13mm hole in the inside front center hub cover for the slipring. Drill a similar sized hole on the back side of the frame. Screw the slipring adaptor into the center hub using stianless screws in the recessed pocket, and then screw the slipring over it, making sure the spinny around part is inside the reel. Route the static wires into the back box. Now glue or tape the potting guide curved section to the back frame.</p> <p>Install the RCA balun in the box and attach to 2 wires. Now fill that compartment with RTV or clear silicon and secure the lid. Install the 3 potting well lids around the screw holes for the box, making sure to use the one with the cable cutout on the bottom, and then fill those 3 sections with RTV or silicon as well. Fill the potting guide curved section as well.</p> <p>Now, assemble the lid by installing the network cable and mini usb connectors, and run their respective wires to the fathom board. Mount the fathom board using M3 bolts and spacers, and attach two of the tether wires. When everything is ready to be assembled, run a bead of rtv or silicon around the edge of the box in the gasket groove, then bolt the lid down. Allow to dry for the manufacture reccommended duration.</p> <p>Next attach the tether wire to the slipring through the integral spool hole. fill that hole with silicon. if you have some, add some spare ROV float material into the center drum, then attach the lid with silicon and screws to make it theoretically watertight. There will be a future drill interface (for higher speed tether rolling up) and cable wrap section that goes here, but ignore those for now.</p> <p>The last remaining thing is to finish your tether interface. I used 8 pin Seaconn connectors and this cable support grip <a href="https://www.mcmaster.com/#69675k23/=17gw3j1">https://www.mcmaster.com/#69675k23/=17gw3j1</a> along with 3m Scotchcast flexible cable overmold resin to attach the seconn 8 pin micro wetcon section. That allows me to still attach to the kevlar strength member in the ROV cable and tie that directly to structure, but still have a removable tether. There are plenty of other methods as well, so use the connectors and attachments that make sense for you.</p>

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