The electronic piano
which used 555 timers IC
| It tried making the electronic piano making use of
555. As for 555 it is IC where it is possible to decide oscillation frequency with resistance and combination of the condenser. The electronic piano variable doing the resistance which decides oscillation frequency with VR has adjusted sound. The electronic piano kit which used the general-purpose part which is marketed,The transistor and digital IC etc. system is different, but the oscillating circuit is formed in the same wayResisting variableIt seems that the system which adjusts sound is many. |
Part summary  | |
| Processing the
part Inserting in the circular pin IC socket, it reinforces IC. Looking at the as-built drawing carefully,It forms the lead/read of the part in optimum interval,Please cut the length of lead/read, with the same as the jump wire. Especially raising, the resistance which you install (1k Ω) with as for forming the jump wire of brown, please pay attention to length and interval. Short circuit and paying attention to error wiring, will try to become arrangement wiring which is easy to see. | |
First, the oscillating circuit is made, the takt switch is pushed, you verify whether sound comes out. | |
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| When you verify that sound comes out, you remove the takt switch and semi- fixed volume, the remaining jump wire wire. | |
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| When you attach the takt switch and volume, as for the assembly completion | |
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| When you complete, please try pushing
the takt switch. Still because sound is not adjusted, it is the expectation where デタラメsound comes out completely. While pushing the switch, turning semi- fixed volume with the driver, sound (oscillation frequency) it keeps adjusting to order. |
Disclaimer:This is a computer translation of the original webpage. It is provided for general information only and should not be regarded as complete nor accurate.
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