Single star Cree XR-E to blink...- Mtbr.com
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  1. #1
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    New question here. Single star Cree XR-E to blink...

    I would like to build a rear blinking red light for my bike.
    What would be the best option to drive a single star Cree XR-E without breaking the bank?
    I preferably would like to put everything in a single unit.

  2. #2
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    Buy this from DX:
    1 red Cree
    DIY flashlight housing for 18650
    16-mode driver

    Total cost around $25

  3. #3
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    Quote Originally Posted by zemike
    Buy this from DX:
    1 red Cree
    DIY flashlight housing for 18650
    16-mode driver

    Total cost around $25
    Thanks zemike,
    I'll have look on the DX site!

  4. #4
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    Quote Originally Posted by zemike
    Buy this from DX:
    1 red Cree
    DIY flashlight housing for 18650
    16-mode driver

    Total cost around $25
    Which Cree emitter?
    Which driver?

    I bought the housing, circuit board and emitter. My emitter was too thick to fit in the housing. I could never get the circuit board hooked up properly.

    I wish someone who has successfully gone this route could post instructions and a parts list. Or else a link to the information.

    Thanks

  5. #5
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    I did this successfully.

    Red Cree: http://www.dealextreme.com/details.dx/sku.1776
    Driver: http://www.dealextreme.com/details.dx/sku.7612
    Flashlight body: http://www.dealextreme.com/details.dx/sku.15687

    I had to completely trim the Cree star and to solder directly to the LED. Also keep in mind that the red Cree is rated up to 700 mA max, so I try to avoid the 1000 mA constant mode of the driver.

    I have read that the 1000 mA driver can be transformed into a 700 mA driver by just unsoldering one of the three 7135 chips, but I didn't do that.

  6. #6
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    Quote Originally Posted by zemike
    I did this successfully.

    Red Cree: http://www.dealextreme.com/details.dx/sku.1776
    Driver: http://www.dealextreme.com/details.dx/sku.7612
    Flashlight body: http://www.dealextreme.com/details.dx/sku.15687

    I had to completely trim the Cree star and to solder directly to the LED. Also keep in mind that the red Cree is rated up to 700 mA max, so I try to avoid the 1000 mA constant mode of the driver.

    I have read that the 1000 mA driver can be transformed into a 700 mA driver by just unsoldering one of the three 7135 chips, but I didn't do that.
    I understand that you connect the battery neg to the bottom, outer ring of the emitter, and the battery pos goes to the bottom inner pad. Where do you make connections on the circuit board that go to the emitter?

    Thanks for your help.

  7. #7
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    If you install this driver into a flashlight, then there's no need to solder battery contacts.

    For wiring to the LED see here:
    http://www.dealextreme.com/forums/De...hreadid.282306

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