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If you want to go under the sea, this Parallax Submersible ROV project by Richard will allow you to go where most electronics don’t want to go. With a goal of looking at the bottom of a lake in Michigan and watching some fish I think this project will do very well. "This ROV is tethered to the surface with a 6 conductor Ethernet cable and nylon support line. It will be placed over the side of my boat and allowed to sink (buoyancy is adjustable with steel plates attached to the bottom of the main tube). Initially the tethered line is only 50 feet long.. Using the surface control console I am able to adjust left and right motor speeds forward and reverse (400 size electric RC brushed motors geared 6:1 and 3” diameter propellers cut down from electric RC props). Keeping the ROV fairly close to the boat I will be able to move it forward, backward and rotate it side to side. The control console has a 7” LCD monitor receiving signals from the TV camera mounted at the front of the main tube and viewing through ¼” polycarbonate plate. I have two 50 watt Halogen lights mounted on the forward top of the tube. I can control the intensity of the lights with a rheostat mounted in the surface control console. The lights are homemade using outdoor garden bulbs housed in 2” PVC with a polycarbonate plate lens."
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Above and below are 4 items, the source and date will not be given to add to the challenge. This contest will run for one week (May 1 – May 7, 2009) . Ending time is based on central standard time. To enter, leave a comment with your best guess at the total price of the items.
The winner will be the guess that is the closest to the actual total price, if there is more than one correct guess a random selection will be used to decide on which of the correct guesses will win.
———————————–———- Added May 15, 2009 The correct total price to guess was $69.99 Non-altered item pictures have been added below. Here are links to the items that don’t have prices listed on the pictures. Boarduino $17.50 The winner is Mbarry. ————————————–———-
Below is a picture of the prize.
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This DIY Subwoofer Project Build shows that it is truly possible to make a sub that looks (and probably performs) better than lots of the stuff you would find in your local electronics shop. The use of leather and high gloss plastic panels really add to the high end finished look of the speaker. "The box itself will be built of MDF board. I chose MDF because I can get it for cheap and it’s easy material to work with. I’ll be using dark grey leather and black highly reflective acrylic as finishes. Subwoofers are NOT built in random boxes and hoping it will sound good. I use a progam called WinISD to make the plan. It’s a program where you input the parameters of the subwoofer driver and it will simulate how different box designs work with your driver and amplifier. Different drivers work best in different type of enclosures."
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