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I mistakenly took the paper coating off the plexi before sending it to be cut which meant that the heat from the laser-evaporated plastic gas scarred the surface of the plexi.
I designed this laser cut kit of parts for assembling a scotch yoke, a mechanism for converting rotational motion into linear motion. I'm using it to control a physical camera based on the position of a virtual camera in an After Effects animation to achieve a match move. Full write-up here: www.urbanhonking.com/ideasfordozens/2010/09/matching_came...
A servo moves the indicator arm as the ultrasonic rangefinder detects things. It's accurate to within a centimeter at close range, and within 5cm at longer ranges.
It works up to 3m, but my wall is 2.73m away. In this shot, my hand is being found a few centimeters away.
I also have an IR rangefinder which is a bit more complicated to use because of the non-linear response, but I'm working on it!
A rainy Sunday project with the kids...
Video at vimeo.com/40416119
Uses HydraMF, my open-source library for Netduino. Includes drivers for Nunchuck and servos.
Binaries are available on Nuget (nuget.org/packages?q=hydramf) and source code on Bitbucket(bitbucket.org/aalmada/hydramf/).
Just a quick proof-of-concept demo. Arduino listens for voltage drop from doorbell circuit, then moves servo back and forth to shake a bell attached to a lego arm driven by the servo.
The bell is just from an ornament and isn't really loud, so a better bell is needed.
Code used here: github.com/lilspikey/arduino_sketches/blob/master/doorbel...
These servo amplifiers were the amplifiers that helped with communication between the bridge and the canard and stabilizer control,.
Building DIG's arms. He'll be asymmetrical as far as arms go. This is the left arm. The right arm will be a different design and, at this point, have a 3-point pincer hand.
These disused bowsers still display Shell oil company emblems and on some of them, signage for Super grade (leaded) petrol in the south western Sydney suburb of Riverwood.
It is very easy to make your own shutter using a servo motor and and arduino, and it is also very easy to control it from Video Projection Tools VPT 5.1
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Rear brace and spoiler has been removed to reveal bracing of PF Large motor and 36-tooth gear. Gear ratio is 1-to-3 (12z --> 36z), which is 50% faster than the original's 1:2 gear ratio (12z --> 24z).
Four views of a Hitec servo being built out with the Servo City Servo Blocks. These are hefty pieces of aluminum with a big beefy bearing at the output end. The hollow axle is splined at the servo end, so there's good positive contact with the servo's output. Altogether a nice piece of work.
Camera: DCS520C.Serial #: K520C-01013.Width: 1728.Height: 1152.Date: 7/06/00.Time: 11:46:29.DCS5XX Image.FW Ver: 3.2.3.TIFF Image.Look: Product.Antialiasing Filter: Removed.Counter: [22032].ISO Speed: 200.Aperture: f14.Shutter: 1/125.Max Aperture: f2.8.Min Aperture: f32.Exposure Mode: Shutter priority AE (Tv).Compensation: -0.3.Flash Compensation: +0.0.Meter Mode: Evaluative.Flash Mode: No flash.Drive Mode: Continuous.Focus Mode: AI Servo.Focus Point: --o--.Focal Length (mm): 115.White balance: Preset (Daylight).Time: 11:46:29.780.
Quickly put together lego prototype to make sure that the servo provides enough torque and moves fast enough to ring a real bell. The brass bell weighs around 100g, so it does pretty well.
Arduino drives the servo, when it gets a response from an off the shelf wireless doorbell.