
tevans
Hi there. Im building my first Robot and Im very impressed about the possibilities on the EZ-B..
At this point I really need a help. Im trying to use some leds to lipsync the sound that comes from the sound board (its the robots mouth...). Well, I hooked up the led on a digital port and use the sound servo control... the problem is: the LED NEVER GOES OFF! Even when the value is Zero.
And the other problem. It responds to the MIC signal, but not to the soundboard...
can someone help me on that ?
thank you!
best regards from your friends in Brazil.
I am not sure if this link can help.
Rectified link
So I think basically you need a circuit that takes the servo control pulses and converts them to a DC voltage level. Everything else you need is pretty much there
@hhammoud's link is wrong, here is the correct url for the previous topic about it.
Here is another topic from way back when I asked about it
Ignore the radio control stuff the servo would just plug into the EZ-B board
I should have verified it....thx for posting the proper link.
Thank you very much for your help.
I'm looking forward to post some pic and videos of my prototype..
It would be great if the sound servo control allowed you to select where the sound was coming from. I can see where this could get complicated since some folks use MP3 shields, though.
Or Digital Ports can read PWM, or analogue can read ADC. If you can somehow set up the speaker wire to output between 0 and 5v depending on volume you could read this and convert that to LED brightness...
Just food for thought
Edit: Indestructables have a tutorial on sound reactive LEDs that may be work a look at.
I'm sorry... But can you teach me HOW to read only the soundboard sound ? (Not the mic).
I tried to turn the "listen" on mic config.. Did not work...
Thanks...
It blinks sincronized (is this the correct word in english?!?!) to the robots voice! Perfect.
I'll post some videos soon.
Best regards from Brazil.
Tevans.
This is what I used on my B9. I have it powering a big array of LEDs. It worked good for me because it runs off of 12 volts, and that is what I am using. It might be overkill for a small robot, or a one or two LEDs.
www.jameco.com/1/1/46600-mk114-low-voltage-light-organ-input-sensitivity-2w-60w.html
I am not shure bout the head yet.. But i decided that the bluetooth speaker goes inside that and the leds will be housed in a little box in the mouth..
Well that's it.. It's not a masterpiece, lol... But I'm learning a lot from that. Despite my english...
Thanks for your help.
I'm thinking about put some micro servos on the wrists too, but I'll have to wait the acrylic hands to see if they can lift that...