piclist 2000\06\06\205331a >
Thread: and [OT] Measuring weight using TSL214 with a PIC
face BY : Gennette, Bruce email (remove spam text)

What's wrong with connecting a wire to the bottom spring mount point,
passing it up through the centre of the spring to operate a normally open,
spring loaded switch via a short rubber band?

No feed on platform - main spring pulls platform up and spring loaded switch
goes open.
Feed on platform (or feeder) - main spring stretches and switch is pulled
closed.  Rubber band in switch closer handles over extensions.

Simple.  Cheap.  Adaptable to multiple switches, rotary pots or gray code
encoders for half full, near empty, etc.

Put the top end of the switching wire and the switches in a box and the
whole lot is inaccessible (except for the small hole in the bottom of the
box where the switching wire enters).


       {Original Message removed}

See also: www.piclist.com/techref/microchip/devices.htm?key=pic
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Subject (change) and [OT] Measuring weight using TSL214 with a PIC

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