Friends in this video I will show you How To Make A Touch Sensor Musical Doorbell Circuit..A Simple Touch Sensor Musical Doorbell..Friends it is a very simple circuit and you can easily make this touch sensor doorbell circuit at your home..Friends in this circuit we will use a 555 timer ic and some simple components for making the touch sensor doorbell circuit..Friends this touch sensor circuit will be operated by the touch of the finger..Friends in this circuit we will use a UM66 ic for generating a melodious ringing bell sound..Friends for making the touch panel we will use a thin iron plate..Friends when you will touch the touch panel the melodious sound will start and after some time the sound will be stopped automatically..Friends the duration of the sound depends on the capacitor value which is connected with the circuit..Friends if you want long duration then you will have to connect a high value capacitor and if you want short duration then you will have to connect a low value capacitor with this circuit..Friends in this video I will show you the complete process of making a touch sensor doorbell circuit step by step..Friends the touch sensor circuit diagram is in the video please see the circuit diagram..So friends if you want to know how to make a touch sensor musical doorbell circuit at your home then watch the video and follow my instruction...Thanks...
Used Materials..
1 piece blank pcb board, 1 piece 555 timer ic, 2 pieces 100k resistors, 2 pieces 2.2m resistors, 1 piece 100uf/25v capacitor, 1 piece 220 ohm resistor, 1 piece UM66 IC, 1 piece BC547 transistor, 1 piece speaker...
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