Case #102: Dick Had a Cameo Role in Scream 2

October 23, 2006

Give the little witches and warlocks a real trick when they come clamoring for treats on Halloween with this doorbell-activated soundtrack. All that's required to build this spooky sound generator is a moderate hack of a cassette player, which involves opening the case and rewiring the motor for remote control, and rewiring of your doorbell circuit. Add a simple, roof-mounted speaker, and you'll have the little darlings scattering in every direction at the first blood-curdling scream.

Download the Build Instructions

Amt Part Description Allied Part #
1 1K 1/2W Resistor 296-2187
1 100 ohm 1/4W Resistor 296-5514
1 47 ohm 1/4W Resistor 296-2178
1 SCR 568-0639
1 K1 Relay 12V ac 850-0546*
1 K2 Relay 12V dc 866-2554
1 PSU1 12V dc power supply 928-9720
* or 24Vac 866-2020 (see text)
Additional parts required
R4 10 ohm resistor, rating appropriate for Cue Channel output (needed if the Cue Channel amplifier has an output transformer); Stereo tape player or tape deck and amplifier configured for electrical remote control (see instructions); Continuous-loop tape cassette (TDK EC-3M or similar). EC-3M is a 3-minute loop. One vendor informs me that TDK is the only current maker of loop cassettes and this is the shortest loop they make.

Add new comment

By submitting this form, you accept the Mollom privacy policy.