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Signal Wire Length
This year we will be making our own PWM cables, as well as running several sensor lines. We have determined that we could connect all of our sensors (5V digital logic and PWM) using 24 AWG. This was the perfect size for us for a multitude of reasons, including the amount we have in stock and it's fit into the PWM contacts and encoder connectors. However, we're not sure how our signals will react over the (relatively) long length of wire - up to 7' from endpoint to endpoint.
I can't find any specs about the amount of current the GPIO pins source/sink, nor about the voltage threshold for the digital inputs, so I can't calculate the voltage drop over my wiring nor would I know if it was acceptable. Does anyone have any more info/another method of determination/advice? Last edited by EricWilliams : 04-02-2009 at 14:56. |
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