Post
by Лайтмен » Mon Mar 31, 2008 22:43
2 Kuzma: read carefully all written below... by the Way, paragraph 1) I checked first thing before your post, the benefit is not a fool.
2 All:
1) Works are not "amplitude", and as it should. Checked this: run BWGen -> Configuration wizard, select it from zero level and max brightness. At the same time in Winamp max volume plays Pain - On and On (music, the sound of the approaching white noise,=)), in this scheme only quite a bit responds to music (brightness percent to 10 maximum) and fine detected strobe signal (giving 100% brightness), although the amplitude of the strobe signal does not exceed 10-15% of the amplitude of the music. Check brainer - turn on the recording from Wave out and look.
2) the Output chip, the paw No. 8. Of the power scheme, we have 0 (ground) is +5V (power). On the 8th leg, according to the oscilloscope and the multimeter, have a signal of about -0.2 V (negative!), which is not Gud. But all has appeared very simply - connected directly to a 6-diode module (all white ultra bright Chinese lantern) - when testing the strobe on max brightness and duty cycle espulso 50% multimeter showed only around 20 mA (not believe !), and the chips are absolutely not warming up even during prolonged testing. Conclusion: any transistor switch nafig not needed - at least for these self-made glasses, like me. The brightness of their more than impressive - IMHO there's no need.
3) Resistor P1. KuzmaI know how to read, and I know that P1 is not a trimming resistor. But your scheme is not working properly, and I have correctly, so I suggest to listen to me. To recap: I set out to make the gate of the decoder, not the crap, the flashing diodes to the beat of the music. So, if you increase the resistance of P1 is reduced detectable by the chip frequency, it begins to "catch" not only the strobe signal, i.e., becomes less resistant to high-frequency sounds in music. However, if R(P1)~=0, the scheme does not always catch the strobe signal. Thus, I suggest to twist P1 and to choose the resistance that best detectas it strobe signal, and not any nonsense. The result for their conditions will be reported later, as will select - as the once.
4) Contaminants to the signal. In the operation of the scheme drew attention to the extraneous beeping in the headphones. Its frequency decreases with increasing resistance to P1, so that interference from the LM 567. The food I have there are two a / C to 1 UF as in the diagram, but this is not enough, since this is the same voltage we fed the LEDs. By the way, when they start flashing/blinking, signal distortion increased tenfold - they mingled with the rattle from the on/off of the LEDs. I think you need the a / C anywhere at 220 UF, but not yet checked. Will pick up/check - be sure to accomplish your goal.
5) FutureMind. Ugh, yeah, right, he is trial, but it works. IMHO it even this is enough to "propertise" for AudioStrobe-topic and collect/dig normal strobe decoder =)<
).
