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This Avro Lancaster Propeller was pulled from the wash and was originally placed at R A F Woodall Spa and was then moved to the Thorpe camp Visitor Centre when the airfield closed in 2003
Image of an object in the SDASM Curatorial Collection--Please tag these photos so information can be recorded.---Note: This material may be protected by Copyright Law (Title 17 U.S.C.)--Repository: San Diego Air and Space Museum
Photos from a restful Thursday afternoon. Relax mode, strip out stress and enjoy the scene. Photos taken from 3:30 pm to sundown. To record and capture moments with nikon 18-140 mm.
Mr. H. found this old brass Boat Propeller in 4 feet of water. It looked to be about 20-25 years old.
The new, experimental Steam Fighter Mk.XII is armed with two drum-fed, automatic rifles. It is propelled by three chain-linked propellers and features folding landing gear. During the war, only two were ever used in combat. They proved much too dangerous to handle and were scrapped or heavily converted.
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All photo rights are owned by Doc's Friends, Inc. and use of the photos on this site for publication must be approved by Doc's Friends, Inc. For more information, contact: www.b-29doc.com/media-contact/
Propeller of a WW2 plane (dont remember which) shot at the smithsonian Air and Space Museum in Washington DC. In camera BW conversion.
A reminder of the loss of the ship (The Lusitania ) and the 1191 men, women and children who perished when it sank in 1915. This propeller was retrieved from the wreck site.
Taken on a dive in Hawaii with Waikiki Dive Center. We dived on a US Navy Corsair aircraft that crashed during WW2 that now lies about 90' down.
Popcorn is a tribute to the Time-of-day telephone service. Just push the button and it announces the current time.
BACKGROUND
Starting around 1950, you could dial 'POPCORN' anywhere in Northern California and you'd get an automated time-of-day announcement. In 2007, AT&T stopped offering the service because of decreased usage and because the equipment was no longer serviceable. I always thought it would be fun to do my own version of popcorn using different voice samples, and finally got around to putting it together. If you're curious what the original popcorn sounded like, here's a sample mp3.
THEORY OF OPERATION
Popcorn uses an LCD UI module and Propeller Platform SD. The only hardware I added was a headphone jack that goes out to a computer speaker. Everything else is stock.
The microSD card holds the code and voice samples as 16-bit mono wav's. Each number has its own wav (00.wav - 19.wav, 20.wav, 30.wav, etc) and so do the supporting phrases (morn.wav = "Good Morning", pst.wav = "At the tone, Pacific Standard Time Will be", and so on). You can switch out the samples by changing the files on the SD card.
One cog manages the screen, updating it continuously, and checking to see if the 5-way d-pad has been center-pushed. Pushing center will enter a time update mode to let you change the time and date. A second cog manages the audio announcement. It checks to see if the big red button has been pushed. If so, it asks the RTC for the time and plays the appropriate wav files.
If you've got a Propeller Platform SD and LCD UI, you can try it out by downloading the code + samples. Just copy to a microSD and turn it on and it will start up. With a Parallax Protoboard or demoboard, you'll probably want to change the pin assignments and you'll need to add a DS1307 Real-time clock.
DOWNLOADS
Here are the schematics for the Propeller Platform SD and LCD UI.
Sourcecode, design, etc, are open source under the MIT license.