Re: Low cost weight sensor ?

Hello Anton,


Load cells would work, but will be quite expensive.
Springs, levers and opto or hall sensors would
be another possibility.

I was hoping to not have to roll my own.


Just an idea: A couple of years ago I bought fancy bathroom scales. Nice glass design and four pillars. There must have been four pressure sensors in the pillars since wires went there and there was neither any mechanical cantilevering nor did this thing move down at all if I stepped on it.

I can't look though and don't remember the brand. I returned it because it was less accurate than the old scales but it might have been good enough for you. Look at the stores (Taregt, Walmart, Mervyns etc.) I bet they still have something like that. This model was $34.99 with a big LCD display so the sensors must have been cheap.

Regards, Joerg

http://www.analogconsultants.com
.

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