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Hook a solar cell to a mini phone plug. Connect the plug to an audio amp. Stretch a balloon tightly across an end of an oatmeal box with the bottom & top removed. Glue a small mirror to the center of the balloon rubber. Reflect a bright light beam from the mirror onto the solar cell. Talk or play a recording into the oatmeal box. The sound will modulate the light and be reproduced at the amp.
Put a creepy looking Jack in there to replace the original & "antique" the outsideHave the music play backwards.Deaden the sound of the servo.Put in a vibrating motor to make it dance.Make Jack's head spin around.Make the camera lens part of the artwork & disguise the printed base.Have a tiny girl's voice cry 'mom-my' if someone touches it. Fix it so Jack doesn't pop till someone touches it.Great work! Just a few random ideas...
The tiny area of the diode = a very tiny output. You can also grind the case off a transistor to make a phototransistor .
Get an empty fire extinguisher. Unscrew the cap. Pour in 1/5 the extinguisher volume in lamp oil or paraffin. Reattach the cap & valve. Wrap some cotton around the end of a 12" 12 gauge wire and tape the bare end to the nozzle. This is the pilot light. Dip the wick in lamp oil. Use the rubber blow nozzle of an air compressor & press it hard against the extinguisher nozzle, squeeze the extinguisher handles & fill w/ 100psi air. Release the handles BEFORE stopping the air pressure. Light the wick, aim the nozzle in a safe direction, squeeze the handles. You'll get a 30 foot flame easily. Watch for cops.
What does the Raspberry Pi camera do that a conventional one doesn't? I'm not sure I get the whole concept. I've used a digital camera on my 10" reflector before w/ great results. Can the Pi be used w/ a stepper & gear drive to constitute a clock drive? An inexpensive clock unit would be a great thing.
How about using old school gummed back paper packing tape. I have 2 big rolls I got at a shipping supply place & all you do is moisten the back and wrap around the form. Some of this tape is reinforced with fiberglass threads. Also, you don't need to "precisely calculate the pre-cut lengths for each layer" in spiral winding as stated in a previous post unless you love math--just make them longer than you need & trim when dry.
Be aware that modern gas tube transformers are protected with a device that will no allow them to be used as a Jacob's Ladder. I found out the hard way by getting one at the salvage yard. I had to put in a request at a local sign co. and wait over a month for them to find an outtake from an old sign.
That's small potatoes. Get an empty fire extinguisher. Unscrew the top. Pour in lamp oil till 1/5 full. Put top back on. Hold handles to open or spray position while injecting 100 psi compressed air thru nozzle. Release handles THEN remove air hose. Attach a straight 12" wire with a cotton wick on one end to the neck of the extinguisher so as to make a pilot light. The wick should be below the level of the nozzle. Dip the wick in lamp oil & light. Aim the nozzle (outdoors!) in a safe direction @ about a 45 angle & squeeze the handle. You should get a flame going out as far as 20-30 feet with a nice churning ball of fire at the end. Get ready to run like hell if anybody sees you!
Good idea! I've always used a torch & then some light buffing w/0000 steel wool & water, gotta be careful w/ overheating & discoloration though.
Pliers aren't called butcher tools for nothing, but they're ok in a pinch. Pinch? bwahhaha!
Pliers aren't called butcher tools for nothing, but they're ok in a pinch-- (pun intended).
As a low tech alternative you could use ping pong balls cut in half w/ the concave side forward & cut to fit the eye openings. Paint eyes in the inside of the curve & hot glue to the back of the painting. Now the eyes will follow the viewer in any direction like those in the haunted mansion @ Disneyland. Great job though. Looks like fun!
I used 3% peroxide on an old red juice stain, let it soak, then put a towel over it & used an iron to heat it. The stain was almost invisible after 2 or 3 treatments. You want the iron hot enough to make steam but not enough to scorch.
You can make fake spider webs by dribbling the glue into the airstream of a hair dryer. They even feel sticky but are pretty easy to clean up. Also upholstery is amazingly easy w/ HG and you can easily re-cover furniture.