Hi guys,
I'm building a large wire buzzer game for a village fair. It's a wooden box with with a wiggley 8mm copper pipe for the wire and hoop.
I'm looking at buying these for the "alarm":
http://m.ebay.co.uk/itm?itemId=172203759436&varId=471036939041
http://m.ebay.co.uk/itm?itemId=152003496191
These will be connected in series with the power supply, the hoop and the wire so when the hoop touches the wire it completes the circuit.
I'm not sure about the power supply though, the LEDs are 12v and the buzzer would be fine on 12v but I'm not convinced a square 9v battery and two 1.5v batteries would cover be sufficient for the full day at the fair and with all the resistance in the copper pipe.
I do have two 18v dewalt drill batteries (which seem to actually deliver 20v). I'm thinking these would last the day and give the power needed. However I'm guessing this would kill the LEDs? Would this solve the issue? http://m.ebay.co.uk/itm?itemId=261753222452
Thanks for your help!
I'm building a large wire buzzer game for a village fair. It's a wooden box with with a wiggley 8mm copper pipe for the wire and hoop.
I'm looking at buying these for the "alarm":
http://m.ebay.co.uk/itm?itemId=172203759436&varId=471036939041
http://m.ebay.co.uk/itm?itemId=152003496191
These will be connected in series with the power supply, the hoop and the wire so when the hoop touches the wire it completes the circuit.
I'm not sure about the power supply though, the LEDs are 12v and the buzzer would be fine on 12v but I'm not convinced a square 9v battery and two 1.5v batteries would cover be sufficient for the full day at the fair and with all the resistance in the copper pipe.
I do have two 18v dewalt drill batteries (which seem to actually deliver 20v). I'm thinking these would last the day and give the power needed. However I'm guessing this would kill the LEDs? Would this solve the issue? http://m.ebay.co.uk/itm?itemId=261753222452
Thanks for your help!