Safety Warnings (You can be quizzed on these at any time. Make sure you are familiar with them!)
- Soldering should be performed in a well ventilated area. All soldering stations should be set up on the lab bench closest to the front door and the front door should remain OPEN to ensure good ventilation
- Safety goggles and close-toed shoes are REQUIRED while soldering
- Soldering irons should be kept in their holder at all times when not in use (also, sponge must bet wetted with tap water before being used to clean the iron tip)
- Never hand another person the iron directly. Return in to the holder and let another person get it from there
- The soldering iron should be turned off AND unplugged when not in use.
- Before using a heat gun, get personal training from Mrs. S!
Training Videos
YOU MUST WATCH ALL TRAINING VIDEOS BEFORE BEGINNING THIS TASK.
How to use automatic wire strippersBasics of soldering and how to solder a printed circuit board
How to solder 2 wires together
Practice Activities
- Use the spare wire and practice stripping them! Try different sizes and try stripping different lengths of insulation off. Make sure to throw away any scraps of insulation into the landfill bin and metal wire into the recycling bin.
- Use practice supplies to learn how to solder 2 wires together and just watch the video on how to waterproof them. Directions on how this is done can be found here
- Before you begin soldering your control box, you and a partner (someone else in charge of their team's control box) should work together on a practice circuit board. Please obtain the materials for this from Mrs. S.Directions for the practice board can be found here NOTE: at this time, you can't do the last part (step 5) where you attach a motor because I don't have any :( Show your finished practice board to Mrs. S before going to the next task!
- That's it! You are ready to work on your actual ROV parts!
Building the Power System
Note: These directions are provided courtesy of MATE. Full pufferfish directions and details can be found here
The power system delivers electricity to the control box, which is then delivered down the tether to the ROV. The 10 or 15 amp blade fuse protects the electronic systems. A fuse is a safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level. The powerpole connectors connect to a power source and help to prevent polarity mistakes (connecting red/positive wires to black/ground wires). The PufferFish Power Kit comes mostly assembled. The Powerpoles are already connected to the ground wire and the fuse wire. The fuse wire must be connected to the red power wire. Although this connection should never be underwater, it is a good idea to waterproof any solder joint you make on an ROV. The other end of the wire will be connected into the control box. To create your power system wires follow the instructions found here:
Building the control box
Note: These directions are provided courtesy of MATE. Full pufferfish directions and details can be found here
Time required:
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1 to 3 hours
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Tools needed:
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Soldering iron, solder (MATE recommends 60/40 rosin core solder in 0.32” [0.08mm] diameter), wire snips/flush cutters, wire cutters, wire strippers, utility knife, Phillips head screwdriver, ⅛ inch flat head screwdrivers, slotted jeweler screwdriver, ruler with metric scale.
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Tools recommended:
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Multimeter
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Parts required:
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Red/black power wire, in line blade fuse holder, Powerpole connectors, hot glue and heat shrink
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The PufferFish control system links the power system and the propulsion system. The control system uses three double pole, double throw rocker switches. These switches allow the pilot to turn the electricity to each motor on and off, and also control which direction the motor turns in (forward and reverse).
To build the PufferFish control system, follow the Building the PufferFish Circuit Board instructions. There are a few different variations on the PufferFish control box, so know what version of controller you are building (the circuit board should have the Revision number (REV #) stamped on it). For REV 6, follow the instructions found here:
(see the slide presentation it you don’t understand where to look.)
Want to learn more or troubleshoot? Use these resources!
Attaching your Control Box to the Tether Cable
Note: These directions are provided courtesy of MATE. Full pufferfish directions and details can be found here
Caution! Your propulsion teammates will likely be using the other end of this cable. Make sure you coordinate with them!
Attaching your tether to the control box:
This section deals with attaching the top end of your tether into the control box. The next section, Propulsion, deals with attaching motors to the bottom end of your tether. To connect the top end of the tether, follow the instructions found here:
This section deals with attaching the top end of your tether into the control box. The next section, Propulsion, deals with attaching motors to the bottom end of your tether. To connect the top end of the tether, follow the instructions found here:
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