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January 2, 2009
Product BOB-11722 |
about a year ago
This is a great board for the RGB encoder. It makes it very easy to make all of the connections to the encoder. In addition, I found another non-advertised feature with this board.
After the RGB encoder and the three leads (A, C, B) are connected there are three holes still open just above where the three wires are soldered into the board. I was able to insert .01 mfd capacitors between A and C and B and C and solder them into the board. These capacitors suppress the wiping noise that can occur when rotating the encoder. I discovered the noise with an oscilloscope while trying to determine why I was getting erratic counting of encoder pulses while testing several different sketches from the Arduino Playground.
Some of the sketches were software de-bouncing the switches, but even that was not 100% effective. After I installed the two capacitors the encoder works flawlessly. Therefore if you are having problems getting encoders to count without errors adding two small bypass capacitors: one between (B to C ) and the other between (A to C) should resolve your issue. After I installed the capacitors, I did not observe any noise on the oscilloscope trace.
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