Hello, I have the Witch Gemmy Spirit Ball and I was wondering if anyone knows how to make it play continuously. I am setting it up in my front yard for a Séance this Halloween and I would like it to play constantly since it will be in the middle of my yard and most likely too far for the activation to work.
I don't have that Prop but can tell you that the sensor for props is usually located on the front of the prop either a sound or light sensor with 2 wires on the inside of the prop. I took a photo of the sensor of one of my Spirit Halloween props
I cut the two sensor wires and wrapped them together. Now when I turn the spirit ball on it plays once and then stop and will not play again until I turn it off and on again. So currently it will not play more than once and it will not work with the sensor.
As the OP found, just closing the circuit and keeping it closed for the input will not work as the props will use op amps, transistors, and capacitors to handle the input. Think about for a moment that it has to detect input and then ignore additional input while it runs its routine as otherwise the cycle would start and keep resetting itself to start again and again.
On several of my props I've used a micro controller to open and close relays that were connected to the footpad input on the props.
A simpler method to consider is where someone a while back used a driveway sensor they'd bought at Harbor Freight. It basically has a transmitter that emits an infrared beam that you can place across an entry way and when broken, it sends a signal to a receiver that emits a chime. I think they're like $15 and you could use this where the receiver is near your prop...and your prop will pickup the chime, which in turn should trigger the audio input.
I'll see if I can find the link to the post as it's from a while back.
Edit: that was easy, I just saw where TheMonsterSquad referenced the same post in response to someone else's question. And I was wrong in that it's not an IR beam but a passive infrared sensor (even better).