Wednesday, June 4, 2008

Tape Timer

We're working on an assembly board for training operators on how to assemble harnesses. They wanted me to build a cheap timer that would output the time that a roll of tape spent away from its dock. In other words, time how long it took for the operator to use the tape. So i took some time and built this dock with an integrated sensor and indicator LED. I hooked er up to a make controller and set up the serial port to send out the time.

You can see the indicator LED goes on when the tape is removed

Right now I've got a serial cable running out from the controller that goes to the computer (which shows the time). Next week I'll be getting a little LCD screen that will show the time.
Here is the serial signal coming out of hyperterminal:

So, next i'll add this little gem here, when i get it, and we'll be rolling:

It was a pretty quick project, a little embedded light activated timer, but they wanted quick and cheap, and when we sent it of to get it quoted, the quote came back as $900 US dollars, but mine cost less than 300. Kind of a shame to use such a powerful board for such a dinky little project, it could do so much more, but maybe they'll ask for more next, who knows.

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