RC time constants and cut-off frequencies got you down? What frequencies should pass and which should be stopped from passing through? Determining values for R and C can be hard work, but do you know if your filter will work? Experimentally verify your filter using SparkX's Configurable RC Filter.
With it's wide array of values, you can test filters with a large range of cut-off values. The Configurable RC Filter supports low pass and high pass filter design, just be sure to follow the schematic on the back of the board. Simply attach your signal, flip the DIP switches for which ever values you want to try, and monitor the output using a multimeter or oscilloscope. Does the board not support the values you need? Solder your through-hole or surface mount custom R and C values to the board to test the filter before implementing it in your project.
Experimental Product: SparkX products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to SparkFun's forum for support or to ask a question.