DN Staff

January 10, 2005

2 Min Read
Mark Liked His Tree Straight Up with a Twist

Mark likes his martinis dry, but never his Christmas trees. To avoid his tree turning into kindling prematurely, he created an automatic watering device that keeps it fresh and helps it last longer. His system pumps water from a 1-gal reservoir via a pump powered by a 12V dc power supply. Level sensors maintain the water level and provide overflow control. To avoid the risk of soggy Christmas presents, he suggests testing the system for water leaks in advance of use.

For Mark McCuller's complete instructions on how to build your own Electronic Christmas Tree Watering System, click here.

Electronic Christmas Tree Watering System Parts List

Amt

Part Description

Allied Part #

1

Quad 2 input and gate

568-3237

1

1N4148 diode

263-1538

1

Relay DK1A-5V

788-0085

1

2N2222 transistors NPN

248-1004

1

Resistors 1K florin P, 0.5W

832-9016

1

Protoboard 0.1?~ 0.1 inch spacing

237-0119

1

Power supply +12V dc and +5Vdc

800-8071

3

Level sensor switch

908-1180

1

Dip socket 14-pin

512-4681

8

Terminal block PCB mount

607-7155

Additional parts required: Automotive windshield water pump, plastic 1-gal reservoir, 12-ft plastic tubing, assorted bolts and nuts, metal supports for sensors, Styrofoam flat (1.5-inch balls), cable (see website for complete specs)

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