Cheap foul line detector needed.

candlepinman

Joined Mar 2, 2018
18
Hey all.

I need a handy cheap way of making a foul line system in our lanes where I work. Our machine are old and do work quit well, they are candle pin but over the year the mechanics had removed the foul detectors..

I was thinking of a laser diode and a photo-transistor to ring a buzzer powered by small batteries; but not sure how to make up the circuit for this?

Have any ideas or diagrams??

AnalogKid

Joined Aug 1, 2013
10,096
I know what you are talking about, but others might not. What are you talking about?

What is "candle pin"?

Where are you located?

ak

Last edited:

AnalogKid

Joined Aug 1, 2013
10,096
If a visible beam is ok, then a laser pointer and a photo transistor will give good accuracy and be easy to align. Did your old system have a reflector on one side of the lane, or was the emitter on one side and the detector on the other?

Photos?

ak

be80be

Joined Jul 5, 2008
2,069
Candlepin bowling is a variation of bowling that is played primarily in the Canadian Maritime provinces

Joined Jan 15, 2015
6,693
I guess you can roll your own or buy something as a turn key solution like a garage door safety safety sensor kit which should run under 25 USD. A Google of garage door safety sensor should bring up a dozen results. It would be nice if the original sensors were known as to outputs and how they were interfaced. Ron crutschow Joined Mar 14, 2008 30,098 It might be difficult to find something battery powered that will run for a significant time. AnalogKid Joined Aug 1, 2013 10,096 Yeah, I thought about mentioning that. Foul detection doesn't have to be instantaneous, so you could pulse the emitter at something like 1 ms on every 100 ms, but it still would take some inconvenient batteries. ak Thread Starter candlepinman Joined Mar 2, 2018 18 I know what you are talking about, but others might not. What are you talking about? What is "candle pin"? Where are you located? ak Yes it is candle pin my location is New Glasgow N.S. I have no idea of what the original system had, they had been removed before I started working there, all I do know is that the foul lines used some sort of light for the pair of lanes. Thread Starter candlepinman Joined Mar 2, 2018 18 If a visible beam is ok, then a laser pointer and a photo transistor will give good accuracy and be easy to align. Did your old system have a reflector on one side of the lane, or was the emitter on one side and the detector on the other? Photos? I do not have photos, nor do I know if it had a reflector, all of the old parts have been removed before I started working there. Thread Starter candlepinman Joined Mar 2, 2018 18 I guess you can roll your own or buy something as a turn key solution like a garage door safety safety sensor kit which should run under25 USD. A Google of garage door safety sensor should bring up a dozen results. It would be nice if the original sensors were known as to outputs and how they were interfaced.

Ron
unfortunately all of the old systems had been removed before I worked there, so I have to make up a system that would work on a lane or the pair of them.

AnalogKid

Joined Aug 1, 2013
10,096
How about taking photos of where the old stuff was, since this is where the new stuff will have to go?

ak

Bernard

Joined Aug 7, 2008
5,788
Do you need a short time delay to allow a ball to pass but a foot would trip ?

crutschow

Joined Mar 14, 2008
30,098
Do you need a short time delay to allow a ball to pass but a foot would trip ?
I would think that normally the ball would hit the floor well beyond that point.

AnalogKid

Joined Aug 1, 2013
10,096
I would think that normally the ball would hit the floor well beyond that point.
For "normal" bowlers. certainly; but it takes all kinds.

80 ms is the cutoff period in an AMF patent. Any beam break shorter than 80 ms is ignored.

ak

candlepinman

Joined Mar 2, 2018
18
How about taking photos of where the old stuff was, since this is where the new stuff will have to go?

I will take a photo to show where the new one is going to be.

candlepinman

Joined Mar 2, 2018
18
How about taking photos of where the old stuff was, since this is where the new stuff will have to go?

I will take a picture of where I plan to place the new system and get back to you.

candlepinman

Joined Mar 2, 2018
18
How about taking photos of where the old stuff was, since this is where the new stuff will have to go?

I will take a photo of where I plan to put them and get back to you.

candlepinman

Joined Mar 2, 2018
18
Do you need a short time delay to allow a ball to pass but a foot would trip ?
That I am not sure of, I guess It would be good to have some sort of delay, so the ball will not trigger it.

djsfantasi

Joined Apr 11, 2010
8,390
Candlepin bowling is a variation of bowling that is played primarily in the Canadian Maritime provinces
Or in New England, where it’s more popular than Ten pin bowling.