The Wot-Wot Biscuit Barrel Alarm features my Lego Mindstorms NXT High Voltage AC Appliance Controller which allows you to turn on-and-off your Household mains powered equipment such as lights, radios, heaters, etc. via your Robot. Using this Controller in conjunction with a Lego Temperature Sensor you can also control your aquarium, and even as a incubator control to hatch out bird eggs. The appliance is switched on and off using an Optically Isolated TRIAC (Electronic Relay) to safe guard the NXT from damage. You treat the controller as a standard Lego Light Sensor. The controller uses the software toggling as used for a standard Lego Light Sensor LED switching from reflected to ambient light sensing. This project needs a lot of care during construction due to the Voltages involved. 120-240V AC KILLS! Only for experienced hackers. For SAFETY the NXT 240V AC Appliance Controller has to be fitted into a suitable electrically isolated case. Full Project Details at: www.rjmcnamara.com/mindstorms/ Wot-Wot's are available from the ABC Shop: www.abc.net.au
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