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| USB Opti-Pac and USB Slikstik?? |
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| tivogre:
--- Quote from: krick on August 30, 2005, 02:09:27 am --- --- Quote from: tivogre on August 30, 2005, 01:11:53 am --- Andy: I checked again and the signal is rather marginal. It might be that they are using different makes of sensor which have different characteristics. I spent a long time trying to find out what was going on, and eventally realized that there is a design fault with the board I have. On my board the series resistor in the LED circuit (the only component on the board apart from the sensors) is 820 ohms. This is simply incorrect. The correct value is 100 ohms. The too-high value causes the LEDs not to emit enough light and the sensing doesn't work properly. If you also have an 820 ohm resistor (marked 821) then soldering an 100 ohm one across it will cure the problem. --- End quote --- I'm confused. Is he saying that the Opti-PAC has an incorrect resistor in the LED circuit? --- End quote --- No. The optical board on the tornado spinner does. |
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