Thread: Gear Tooth Pulse Height ??
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Unread 25-02-2007, 08:15
Lloyd Burns Lloyd Burns is offline
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Re: Gear Tooth Pulse Height ??
If you are going to a digital input (no an analog one), they typically require more than 2 V for reliable operation. If the input is typical CMOS (not TTL or TTL-compatible CMOS), the figure is 'more than half of the internal supply voltage'. I haven't taken apart a new RC, but that is probably 5 V, meaning around 2.5 volts.

Try getting the sensor closer to the tooth, or put some iron along the side of the gear to increase the magnetic field strength.