Pentad Laser Harp Sensor Module with Lens Stabilizer
thingiverse
The laser harp's pentad sensor, in conjunction with a lens stabilizer, can effectively stabilize the beam. To create the circuit, use iModela with a milling depth of 1mm/path and a speed of 1mm/s. Include a phototransistor and a 10kΩ resistor alongside a 7-pin pin header (available here: http://akizukidenshi.com/catalog/g/gI-01674/, http://akizukidenshi.com/catalog/g/gR-16103/, and http://akizukidenshi.com/catalog/g/gC-00167/ respectively). Next, create two lens holders and sensor bases using iModela or a 3D printer. Obtain five film lenses with a main lens of focal length 28mm (referred to as tsukaisute cameras, available at print shops). Assemble the lenses within the lens holder, then combine all components as shown in the skp file for your completed laser harp.
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