"jeanval" <[EMAIL PROTECTED]> writes: > and every time i'll receive it that will mean my wheel made one > turn...(being that the signal can only pass through when "those > things" installed on both the fork and the wheel are alined)
You would probably need a device that fires off a pulse whenever the wheel did one turn. I think they are called "magnetic contact switches" or something like that. "Sending off a pulse" could mean that it has two connectors, and that the voltage between those connectors goes from 0 to 5V, for example. If that was the case, you would not need to send anything from the Palm, just detect, which makes it easier. > else i don't know what's the RTS Line... The serial connector has at least three connectors: GND, TX, and RX. Those are used to send and receive data. It often also has hardware handshake lines, which the devices use to wait for data. You could probably use one of those hardware handshake lines to detect the voltage change coming from the magnetic contact switch. And that's all you need, I guess. HTH, Jan -- Jan Exner � [EMAIL PROTECTED] � 0x9E0D3E98 � http://www.jan-exner.de/ Neues aus Frankreich und England http://www.jan-exner.de/uk.html -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
