1. Seven Musical Scale. It can simulate 7 scales do,re,mi,fa,sol,la,si.
2. Three tones. It can switch select Treble, Alto and Bass by left button.
3. Strum/Play Mode. Users can play music according to the music score at StrumModeor play the built-in music at Play Mode.
4. Scale LED Indicator.the corresponding LED indicator will indicate when playing to change the scale.
5. DIY Hand Soldering. Great for electronics hobbyists, beginners, school and home education.

Product Name:HU-013 Laser Electronic Piano DIY Kit
Work Voltage:DC 5V
Musical Scale:do,re,mi,fa,sol,la,si
Tones:Treble, Alto, Bass
Play Mode:StrumMode and Play Mode
Built-in music:2 songs
Control Type:Laser transmitters and photoresistor receiver
Speaker:8ohm 0.5W
Laser power:Less than 5mW
Work Temperature:-20℃-85℃
Work Humidity:5%-85%RH
Working Principle:
When the light beam is irradiated on the photoresistor, the resistance value is very small, the single-chip microcomputer recognizes the voltage as a low level and does not emit a tone.
When a certain beam is blocked, the resistance value of the photoresistor becomes larger, and the single-chip microcomputer recognizes the voltage as a high level, drives the speaker to emit the corresponding tone through the triode and light the LED.
7 String Harp DIY Kit:
The harp electronics kit exploits properties of photoresistors to play melodies with light beams instead of real strings.
When the beam strings are plucked, the corresponding LED lights will light up, and the middle, low, high three tones can be adjusted by pressing the buttons.
Parts need to be soldering by yourself
Colour:As Shown
Material:plastic
Size:(Installed):170x153x25mm

Package Contents:
1 * Electronic Building Kit