Stringless Harp
Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Consists of ABS plastic molded cabinet, ABS plastic molded pedestal, ABS milky white plastic molded operation countertop with flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, artistically processed art piano body, laser tube, photoresistor, etc. Scientific Principle: The exhibit uses laser beams instead of strings. By plucking the 'strings', the receiving circuit changes, thereby guiding the microcontroller control circuit to produce piano sounds, which are then emitted as beautiful notes through the speaker. The photoresistor is a resistor made using the photoconductive effect of semiconductors, with resistance changing according to the intensity of incident light. When incident light is strong, resistance decreases; when incident light is weak, resistance increases. It features high sensitivity, fast response, and good spectral characteristics. It is generally used for light measurement, light control, and photoelectric conversion. Operation: Press the 'Start' button, select your preferred timbre via the 'Timbre' button, the control circuit is energized, and the laser lights up; pluck the 'strings' with your fingers, and the speaker emits sound at the corresponding frequency.
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- China Science and Technology Museum Standard Edition CSTM Standard EditionDimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Consists of ABS plastic molded cabinet, ABS plastic molded pedestal, ABS milky white plastic molded operation countertop with flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, artistically processed art piano body, laser tube, photoresistor, etc. Scientific Principle: The exhibit uses laser beams instead of strings. By plucking the 'strings', the receiving circuit changes, thereby guiding the microcontroller control circuit to produce piano sounds, which are then emitted as beautiful notes through the speaker. The photoresistor is a resistor made using the photoconductive effect of semiconductors, with resistance changing according to the intensity of incident light. When incident light is strong, resistance decreases; when incident light is weak, resistance increases. It features high sensitivity, fast response, and good spectral characteristics. It is generally used for light measurement, light control, and photoelectric conversion. Operation: Press the 'Start' button, select your preferred timbre via the 'Timbre' button, the control circuit is energized, and the laser lights up; pluck the 'strings' with your fingers, and the speaker emits sound at the corresponding frequency.
Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Consists of ABS plastic molded cabinet, ABS plastic molded pedestal, ABS milky white plastic molded operation countertop with flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, artistically processed art piano body, laser tube, photoresistor, etc. Scientific Principle: The exhibit uses laser beams instead of strings. By plucking the 'strings', the receiving circuit changes, thereby guiding the microcontroller control circuit to produce piano sounds, which are then emitted as beautiful notes through the speaker. The photoresistor is a resistor made using the photoconductive effect of semiconductors, with resistance changing according to the intensity of incident light. When incident light is strong, resistance decreases; when incident light is weak, resistance increases. It features high sensitivity, fast response, and good spectral characteristics. It is generally used for light measurement, light control, and photoelectric conversion. Operation: Press the 'Start' button, select your preferred timbre via the 'Timbre' button, the control circuit is energized, and the laser lights up; pluck the 'strings' with your fingers, and the speaker emits sound at the corresponding frequency.
- Optimized Popular Edition Optimized EditionDimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Consists of ABS plastic molded cabinet, ABS plastic molded pedestal, ABS milky white plastic molded operation countertop with flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, artistically processed art piano body, laser tube, photoresistor, etc. Scientific Principle: The exhibit uses laser beams instead of strings. By plucking the 'strings', the receiving circuit changes, thereby guiding the microcontroller control circuit to produce piano sounds, which are then emitted as beautiful notes through the speaker. The photoresistor is a resistor made using the photoconductive effect of semiconductors, with resistance changing according to the intensity of incident light. When incident light is strong, resistance decreases; when incident light is weak, resistance increases. It features high sensitivity, fast response, and good spectral characteristics. It is generally used for light measurement, light control, and photoelectric conversion. Operation: Press the 'Start' button, select your preferred timbre via the 'Timbre' button, the control circuit is energized, and the laser lights up; pluck the 'strings' with your fingers, and the speaker emits sound at the corresponding frequency.
Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Consists of ABS plastic molded cabinet, ABS plastic molded pedestal, ABS milky white plastic molded operation countertop with flip-up instruction board, delay circuit, stainless steel illuminated self-reset metal button, leakage protector, artistically processed art piano body, laser tube, photoresistor, etc. Scientific Principle: The exhibit uses laser beams instead of strings. By plucking the 'strings', the receiving circuit changes, thereby guiding the microcontroller control circuit to produce piano sounds, which are then emitted as beautiful notes through the speaker. The photoresistor is a resistor made using the photoconductive effect of semiconductors, with resistance changing according to the intensity of incident light. When incident light is strong, resistance decreases; when incident light is weak, resistance increases. It features high sensitivity, fast response, and good spectral characteristics. It is generally used for light measurement, light control, and photoelectric conversion. Operation: Press the 'Start' button, select your preferred timbre via the 'Timbre' button, the control circuit is energized, and the laser lights up; pluck the 'strings' with your fingers, and the speaker emits sound at the corresponding frequency.