lazer
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- Dec 21, 2008
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Anyone know how to build a sound controlled spiro? I want to make a white fusion laser spiro sound controlled so that the patterns change based on sounds around it. Where would I start?
If your circuit gives enough current for the motor, then i guess yes (i don't know what circuit you used) ..... just remember to place a pair of capacitors in parallel to the motor, for take care about the almost unavoidable disturbs caused from any motor ..... a simple 100 nF ceramic in parallel to a 4,7uF electrolitic can be enough ..... and ofcourse, remember that your motors can't change their speeds with the same fast response that leds have .....
Here is the exact circuit I am using. I can change the speed of the pulses by increasing the capacitor size, giving the motor more time to react.
Just change the "brightness" resistor with a 10 ohm 1W one (for test if is enough with your motor) if it don't run enough, and place the motor where you have the leds ..... it must work with almost all the mid-impedance motors that are around ..... you can also increase a bit C1, but the normally high impedance of the op-amps, it will not give you too much more ..... and also if is drawed as a resistor, the 470Kohm "level" one must be a trimmer or potentiometer ..... you can try to use an 1Mohm one, if the sensitibvity is too low, but this may cause some noise ..... is all matter of experiment and trials (that is a good part of the fun in electronic, after all )
@ lazer: the pot of 1 megaohm goes where there is actually the resistor of 470 Kohm (not 470 ohm) ..... and yes, you can use a potentiometer in serie of the motor, i suppose, but probably need to get an 1W one, for not fry it ..... if you're not in hurry, i try to see if i can draw a better circuit (but not today, sorry, i'm really busy at shop actually)
@ deam_87: just place the motor with the mirror after the spyro set, not before, so you don't need spyro motors with huge mirrors ..... also, attack a spring to the motor-miror assembly, for avoid that a high impulse turns it away from the beam path and reduce the "wild" movements ..... (LOL, is so much time that i don't play with spyros and motors, i've almost forgot the fun )
@ lazer: the pot of 1 megaohm goes where there is actually the resistor of 470 Kohm (not 470 ohm) ..... and yes, you can use a potentiometer in serie of the motor, i suppose, but probably need to get an 1W one, for not fry it ..... if you're not in hurry, i try to see if i can draw a better circuit (but not today, sorry, i'm really busy at shop actually)
@ deam_87: just place the motor with the mirror after the spyro set, not before, so you don't need spyro motors with huge mirrors ..... also, attack a spring to the motor-miror assembly, for avoid that a high impulse turns it away from the beam path and reduce the "wild" movements ..... (LOL, is so much time that i don't play with spyros and motors, i've almost forgot the fun )