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scotta
01-23-2009, 12:34 AM
Hi,

Does anyone know of an a Linear CCD array that is simple to
use and low cost. Something entirely digital would be nice, without
the need for 4 different supplies.

SPI or I2C would be great


Thanks

Phil Pilgrim (PhiPi)
01-23-2009, 01:43 AM
I have a board in the oven for Parallax that uses the TAOS TSL1401 (http://www.taosinc.com/productdetail.aspx?product=8). This is a 128-pixel CMOS linear array. Is that enough pixels? Its output is an analog voltage. Their TSL3301 (http://www.taosinc.com/productdetail.aspx?product=18) (102 pixels) is entirely digital and uses an isosynchronous serial interface. They have an SX-based EVM for this chip. Each sensor requires only a single voltage and will run from 3.3V. They also have other sensor arrays (http://www.taosinc.com/productfamily.aspx?sel=la) besides these two — some with more pixels.

Attached is a photo of the upcoming TSL1401-DB mounted on a MoBoStamp-pe. It will also be compatible with future Propeller boards that are in the works.

-Phil

P.S. This thread is likely not appropriate for the Propeller Forum unless some direct dependence on the Propeller can be demonstrated.

_

Post Edited (Phil Pilgrim (PhiPi)) : 1/22/2009 6:51:05 PM GMT

scotta
01-23-2009, 01:54 AM
Very cool, it can run on a 3.3 volt supply.

It's for a propeller based industrial sensor.

Philldapill
01-23-2009, 02:23 AM
Phil, how much for the sensor? I'd like a few of these...

Phil Pilgrim (PhiPi)
01-23-2009, 02:28 AM
No price has been set yet, and it would be inapproprate for me to speculate what it might be.

-Phil

Jay Kickliter
01-23-2009, 03:16 AM
That chip looks like it could be paired with a lens, filter, and a point light source (laser, or distant LED) for range-finding. Adjust focus until highest/narrowest bell curve.

Phil Pilgrim (PhiPi)
01-23-2009, 03:35 AM
I've done that for measuring the heights of objects on a conveyor. You need a laser line source perpendicular to the sensor's axis, though, to ensure that it's included in the field of view. Otherwise, aming it gets impossibly tricky.

-Phil

virtuPIC
01-23-2009, 02:55 PM
Just looked up the price at mouser.com. Search for taos and select Optical Detectors and Sensors. In the list look for linear detectors. They have quite a few from less EUR 5.90 up EUR 67.50 Different resolutions, different pixel sizes. Looks very attractive!

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