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Thread: DIY Chrony - Working!

  1. #31
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    Nice work JJP, that is how it should look... nice and neat... not like my one where its a matter of just getting it done to see if it actually works! LOL

    Good job with the extra transistors, that will make things so much easier!!! Getting the shot lined up can be a tedious task.
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  2. #32
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    Quote Originally Posted by Guetzer View Post
    Awesome thanks! what did you use to mount the photosensors in?
    I used some old BIC pens: cut them up into small tubes and glued them over the holes in the 50mm tube. Its was more of a " whatever I could find around the house" scenario...
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  3. #33
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    Quote Originally Posted by Chris du Toit View Post
    Nice work JJP, that is how it should look... nice and neat... not like my one where its a matter of just getting it done to see if it actually works! LOL

    Good job with the extra transistors, that will make things so much easier!!! Getting the shot lined up can be a tedious task.
    Thanks Chris. I did make one with the 25 mm PVC pipe(1 M), But my 3rd shot killed the IR LED at the end So I decided to redesign...Used it a couple of times and all LEDs are still alive and kicking
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  4. #34
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    Hahaha... jip also came close to destroying mine. Had a look down the tube after the first test firing and the little skid marks of the pellets on the inside of the tube came very close!
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  5. #35
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    Here is how my version 2.2 looks so far with a 50mm pvc pipe and 3 phototransistors under each IR LED. Seems to be working pretty consistent so far!

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  6. #36
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    Looking good!
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  7. #37
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    Chris

    Running short of time these days. What is the possibility to build me one and what will the cost be. Please !!!!!!!!!!

    Paul
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  8. #38
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    Quote Originally Posted by Chris du Toit View Post
    Looking good!
    Thanks haha :P still need to tidy it up a bit
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  9. #39
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    Quote Originally Posted by Kuberboef View Post
    Dude!

    This is awesome!
    To give you an idea I paid around R1500 for a pro chrono this weekend.
    and I need to pay another R650 to interface it to my pc!
    https://www.competitionelectronics.c...mart&Itemid=79

    You seem to be pretty good @ this so gonna ask you, I found this:
    http://www.brianenos.com/forums/inde...owtopic=169846
    Chrony PC Interface Cable for USB - Yellow Airgun Forum Archive

    Maybe I am looking in the wrong places or for the wrong thing but I cannot seem to find the hardware to do it with.
    Sorry Kube wrong info in previous post.

    Mantech
    Laub Street
    New Centre
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  10. #40
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    Chris

    PM me when you're ready.

    Thanks

    Paul
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  11. #41
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    Tried building one of these chrony's this weekend, no luck. Is there a specific depth to place the Rx diodes at. I have followed the instructions to the "T" but have had no success. The computer registers a shot when I turn on the chrony, but nothing when a pellet is fired through it. The software seems to be working fine, I just don't know what other settings I should be aware of to make this setup work.

    Crab also tried this chrono without success.
    Any help would be appreciated. Thanks guy's
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  12. #42
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    What also will help is to increase the voltage of the batteries depending of the strength of the diodes. Had the same issue with mine at first, then I upped the voltage and worked like a bomb.

    Also, try to use three diodes on each end, maximises the detection area for picking up the pellet.
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  13. #43
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    Thanks Chris, will try adding another 1.5v cell to the mix and see how it goes. I have 1x TX200 diode per side and 3x Rx diodes.
    Did you use 2 or 4 batteries to power your unit?
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  14. #44
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    I used 2 x 1.5v. But I only had one diode on each side. It will also depend on what strength diodes you have. Play around a bit, sure you'll get it right.
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  15. #45
    REP: WS Airguns

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    Quote Originally Posted by Chris du Toit View Post
    I used 2 x 1.5v. But I only had one diode on each side. It will also depend on what strength diodes you have. Play around a bit, sure you'll get it right.
    Put a price to build me one please Chris
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