At that price I am all for YOU soldering! I think an option with a case or without would be fine...
I do have another idea to make a laser harp more simple involving Ronchi Rulings or a grating rather than scanning a beam. That is another project, with the Arduino code and sensors, no complaints at all on the design at all. I thought I would get the idea I have had for awhile out in the open.
-Adam
-Adam
Last edited by sugeek; 01-17-2010 at 06:40.
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Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.
Support your local Janitor- not solicited .
Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.
hi all
don't worry about the box because i've made the routing using a box from Hammond Manufacturing available at radiospares.
the two boards fit exactly inside (normally )
the first step was to create the "component" for the box. after you have the exact dimension of the board and you can place all the components.
technical datas about the box are available here:
http://www.hammondmfg.com/dwg6.htm
1599HBK model
http://www.hammondmfg.com/pdf/1599H.pdf
about the sensor i've added a connector with supply rails and detection input.
you can design different sensors because i've added an identification system to tell which sensor is used.
i allready have a sensor but i think to work on another system with "closed frame"
for the boards i can ask to my PCB supplier(Utopia electronics) the price for a complete assembly or only with passive components because he make good prices
about the grating system yes that works but you can't choose the number of strings and you can't choose the color.
Last edited by Genesis; 01-16-2010 at 03:19.
Hi people.
The first harp that i built used a grating and I found that the power of the laser was not equally spread across the fan of beams after the grating and the overall power loss was a lot as well. Plus how would you get a single sensor to work out which beam you have broken? The harp I built had a Light dependent resistor for each beam in a overhead cross bar.
For me the V1 harp would be perfect for my needs as it looks to be just like the one that Jarre is using on his stage.
Dose the V1 harp open and close?
How do you asign a Key / Note to each of the beams and is it easy / quick to change the note to beam asignment?
Carl
the V1 one use obsolete parts now and the best way is to use the new one.
to assign a note like in the videos you needs to play a note to the harp and play the note to a master kayboard like synthetiser or midi software keyboard.
the harp microcontroller receive the midi note and store the value in eeprom
the V1 is only a open frame.
for the V2 closed frame mode i think to use an acrylic tube used in "light pipe" mode with a single ptotodiode at the end. the beams are received along the tube and collected by the photodiode
in this mode the harp is surely less sensitive to ambiant light.
Ah, I figured that was the "case" with the way you had the board notched out. Any chance you can post the parts list so I can work out cost?
Cool! So only one PD. I'm guessing each beam is modulated so the harp board knows which beam is blocked. Very nice!
sorry i don't understand what you say.
perhaps you are talking about the opening and closing the harp from one beam?