Re: [LCtalk] Sensor schematic

[Fokko van Duin]

At 22:45 -0400 17-04-2006, Jim Galvin wrote:
> I want to make a few sensors to trigger cues. Is there a simple 
> schematic that shows exactly how to make a simple switch. I'm sure 
> it is very straight forward and simple, I just want to make sure I 
> got it straight. I wouldn't want to damage my LCX.

OK, keep in mind that every i/o channel on the LCX has four pins, 
from left to right:

1 +6 Volt.
2. Digital output (TTL level, max 10mA).
3. Analog input.
4. 0V, common.

For a switch, connect a resistor of 4700 ohm between the first and 
third pin (+6V and An input). The switch should be connected between 
the third and fourth pin (an input and 0V).

When the switch is open the analog value is "max" (1023), when you 
close the switch it's about 0. So the test is:

hold for 0.05s
go x.1 if input 1 is between 512-max  \\ loop back as long as switch is open.

Do triggered


> BTW if your planning on doing the same I found these sub-d break out 
> boards that will make the project a bit easier.
> http://www.winfordeng.com/products/

Very nice, thanks for the link.

Regards,

--
Fokko van Duin,
CDS advanced technology bv,
http://www.lanbox.com/