SparkFun Forums

[raiderdoug]

I want to build a beanbag throw clown game. When a beanbag passes through a hole I need a 12v sensor to trigger a relay. (12v) The sensor then needs to reset and be ready for the next beanbag. It would be nice if the sensor monitored several holes that a beanbag may go through. However, I would still be interested if I needed one sensor per hole. The throw game is for children of the Army Corps of engineers. Does anyone know of any products that might work? Any suggestions are appreciated.

[notexactly]

How big are the beanbags relative to the holes? Because if they're not too much smaller than the holes, you could just use infrared break-beam sensors across the diameters of the holes. Or, even simpler, just put a backboard behind the holes and detect impact with a switch.

[raiderdoug]

I tried the impact switch idea before and found the lights/alarm went off when the bags hit anywhere on the board. They did not have to pass through the hole, just hit the board hard. That is why I am looking for someway to sense a beanbag going thru the hole and start a series of 12v relays. (alarms, lights, ect)

I am interested in the inferred sensor, but was under the impression they only responded to body heat. The holes are bigger the bags. I thought about a motion detector, but most I see need a set amount of time before they trigger. I need something that triggers the instant it senses movement. If anyone knows of a dect that will work, please advise

[Ross Robotics]

Have a hinged door covering the hole (maybe slightly below) and have a switch on the door.

[raiderdoug]

That's what I have now,(hinged boards) and it alarms just by hitting the board. I need something that will sense movement and respond instantly. Most motion detectors I see look for continuous movement for a period of time before responding. There has to be something out there that runs off 12v and will close a relay when a beanbag passes through the hole.

[Ross Robotics]

That's what I have now,(hinged boards) and it alarms just by hitting the board. I need something that will sense movement and respond instantly. Most motion detectors I see look for continuous movement for a period of time before responding. There has to be something out there that runs off 12v and will close a relay when a beanbag passes through the hole.

This sounds like a mechanical problem. Seems like you need to play with the design.

[lyndon]

He meant something like this: https://www.sparkfun.com/products/8958 or this: https://www.sparkfun.com/products/241