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Originally Posted by magical hands
Yeah but what i heard is you need to place a 20 Ohms or 500 ohms resistor to filter the noise. I don't know anything about it and I heard people saying that so I was just wondering if it is necessary to place the resistor and if yes than where? Thanks guys for your reply   |
The low-value resistor is for filtering any noise on the
power input to the sensor. It needs to be accompanied by a capacitor to ground at the power pin in order to do any actual filtering.
The five volt power supply from the Robot Controller is pretty clean, and probably doesn't need to be filtered. The RC digital inputs are of low enough impedance that the output signal from the sensor probably doesn't need to be filtered either. Unless you're running the wires from the RC to the sensor in parallel with motor power leads, I wouldn't expect you to have any noise problems.
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