3pcs Simple Electronic Organ Kit DIY NE555 Soldering Practice Board Multi-notes Keyboard Set

Instruction Click here to openIntroduction By pressing the key to change the different inputs of the NE555 oscillation resistor NE555 generates different signal frequencies and drives the buzzer to make different sounds through the capacitor coupling The kit can generate 16 notes by key combination Feature Operating voltage DC4 12VStandby current 1mAOperating current 40mANumber of notes 16Power switch YesWelding difficulty EasyBoard size 143 x 22 L x W Package includes 3 x Electronic Keyboard Kit