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Linear CCD — Parallax Forums

Linear CCD

scottascotta Posts: 168
edited 2009-01-23 07:55 in Propeller 1
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

Comments

  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2009-01-22 18:43
    I have a board in the oven for Parallax that uses the TAOS TSL1401. This is a 128-pixel CMOS linear array. Is that enough pixels? Its output is an analog voltage. Their TSL3301 (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 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
    tsl1401db-mb.jpg
    800 x 616 - 92K
  • scottascotta Posts: 168
    edited 2009-01-22 18:54
    Very cool, it can run on a 3.3 volt supply.

    It's for a propeller based industrial sensor.
  • PhilldapillPhilldapill Posts: 1,283
    edited 2009-01-22 19:23
    Phil, how much for the sensor? I'd like a few of these...
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2009-01-22 19:28
    No price has been set yet, and it would be inapproprate for me to speculate what it might be.

    -Phil
  • Jay KickliterJay Kickliter Posts: 446
    edited 2009-01-22 20:16
    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)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2009-01-22 20:35
    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
  • virtuPICvirtuPIC Posts: 193
    edited 2009-01-23 07:55
    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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