Timer IC 555 is a low-cost high performance and very popular IC and is used in most circuits. On this website, we have posted various electronic projects using ic 555. Now here, is a simple project called Simple Drummer Project Using Timer 555 which gives an hour of entertainment.
Circuit Description of Simple Drummer Project Using Timer 555
The circuit of a simple drummer project is built around NE555 followed by a few passive components. The circuit posted here is simply a triggering circuit whose time is adjusted by variable resistor VR1. The two capacitors C1Â and C2 are connected to the trigger pin (pin 2) of IC1. The output is taken from pin 3 and is given to an 8-ohm speaker through capacitors C2 and C4.
The output of this circuit is taken from pin 3 and is connected to the positive terminal of two parallel capacitors C3 and C4. This circuit gives a very good drum sound like in disco and jazz music. Capacitor C1 & C2, and C3 & C4 is replaced by two 20 µF capacitors.
This circuit is also useful for musician who wants to practice music with a constant rhythm. The rhythm can be carried through VR1.
Check out other interesting sound generator circuits using timer IC 555 using bestengineeringprojects.com
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PARTS LIST OF SIMPLE DRUMMER USING TIMER IC 555
| Resistor (all ¼-watt, ± 5% Carbon) |
| R1 = 1.2 KΩ
VR1 = 100 KΩ |
| Capacitors |
| C1 – C4 = 10 µF, 16V (Electrolytic Capacitor) |
| Semiconductors |
| IC1 = NE555 (Timer IC) |
| Miscellaneous |
| LS1 = 8 Ω Loud Speaker |
What are the capacitors values used for c3 and c4.