Infra Red Sensor Issue

[fosinator 0]

Hi all, wondering if anyone has any ideas on this problem. I got my pit lanes registering but not the lap sensors.

 

2 lane track with pits

zd1950 sensors with matching tx

the laps count with a normal switch and when touching wires together just not the sensors.

all of the ir tx trigger the pit sensor, so they all work

im using a db25 with pins 10,11,12,13

resistors are on the negative leg of the sensor, would not seem work the other way

 

I will try tonight swapping sensors to see if theyre buggered, but I doubt it, theyre new.Seems strange that 2 would be buggered both on the lap count lanes.

[kalbfellp 69]

Are you using an interface board or direct thru the Printer port, what Progrsm are you using?

Remove the resistors on the sensors and check that the collector ( short leg) is connected to the low numbers.

Only the transmitters need resistors for current limiting.

 

[fosinator 0]

Hi thanks for the reply, using Race Coordinator and laptimer2000.Ok will try what you suggested tonite.I thought the long leg went to number 10,11,12,13.Thats what seems strange, the pit sensors work wired that way.Ill double check tonite before too many beers.Thanks

[kalbfellp 69]

I am not using Jaycar sensors as they 6mm Most guys use 3mm sensors with 6mm transmitters.

I use Darlington sensors so they usually will work without a light gantry.

[fosinator 0]

thanks Phil, turned them around and did the trick.I always thought the long leg(+) would receive from lower number pins so there you go.