(I'm on Celestial's team)
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Originally Posted by DonRotolo
...but this is a DIFFERENT PWM than what is used to control Jaguars and servos. The PWM outputs of the Sidecar won't work for you.
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So the jaguar outputs are similar to standard servo outputs and don't just turn on and off depending on how fast the motor should turn? I guess that makes sense, because the jaguar has those special abilities rather than just being an h-bridge.
Quote:
Originally Posted by DonRotolo
In this case, you just want to display 3 colors (Red, White, Blue). Why not run to Radio Shack and buy an LED in each color and just connect those? Lighter, cheaper, simpler to implement. Just be sure to use a dropping resistor to bring the 12 volts down into the LEDs range - the package or an Internet resource should help you there.
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We might just go with that, but we're under the weight limit. I was also thinking of having some sort of victory dance with them.
Quote:
Originally Posted by 3p1c w1n
How does that work? I thought you could only attach one device, like a compressor, and it's either on or off.
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Well, the LEDs are hard-wired to +12V and just need to be controlled by grounding them. If we attached one lead to the green and one lead to the blue, we could get blue by running the "motor" one way, which would provide +12V to one side (making nothing happen for lack of voltage differential) and GND to the other side (making the blue light up). However, the spike probably wouldn't let us make each side GND (it would just disconnect them if we turned it off) or 12V (why would it?)
Quote:
Originally Posted by Foster
For Lunacy we had a LED light strip to signify that a ball was ready to shoot. They came from a car supply place and were controlled by a Spike. We used blue, but they come in red, blue and white, about 12 LED's in a 24" strip. Can you post the link to your tri-color strips?
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http://www.adafruit.com/index.php?ma...ducts _id=285
Quote:
Originally Posted by Foster
You could even go wild and have it be solid on for the low, slow flash for the med and fast flash for the high so your robot partners know where you going.
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Haha great idea!
What wiring up MOSFETs instead of spikes? It's a custom circuit anyway, and MOSFETs weigh aabbbooouuttt 1% of what a spike weighs and 6% of what it costs, and is much easier to control.