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Thread: Neopixel blade not working

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  1. #1

    Default Neopixel blade not working

    This is my third neopixel build using TCSS neopixel strips (2) and the wiring setup posted by TCSS. I have wired and re-wired this setup and cannot get the blade to work in either of the other two sabers I built using the same setup. I replaced the PCB (even using a TCSS pre-soldered resistor just to be sure). Can anyone share how I can bench test the setup of the pcb to be sure the resistor is soldered correctly and that the LED strips are working?

    I would add that as I write this, I realized that the LED strip is about 12 LEDS longer than either of the other two sabers, so do I need to tell the board a new length to test this longer blade?

    Thanks in advance for any advice!

  2. #2

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    Please post some pictures of what you have so we can better diagnose the problem. There is probably a wiring issue on one of the ends. Also tell us the setup (which soundboard, what battery setup, what size wires are you using, and what to you have the board configurations at?)

  3. #3

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    Thank you!!

    The saber is a Crystal Focus Sound Module X (Oct 2019 purchase), using the DM Sony Li-Ion 18650 3.7V 15A 3120mAh PCB Protected Rechargeable Battery, 28 gauge wire, Wired up per https://www.thecustomsabershop.com/P...ades-C153.aspx.


    The board is set up to run another blade that has 124 pixels, but this one has 137 for a hilt that is still under construction.20201227_112025.jpg
    Attached Images Attached Images

  4. #4

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    have you tried each strip separately? this may be a long shot but the first LED on each strip may be bad. if so the blade won't light, I ran into a similar problem on my blade and the first LED on one strip was dead, the other one lit up. removed the bad LED and it worked like a champ.

  5. #5

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    Good idea. I just desoldered each LED strip separately but still nothing for either one. Darn it! I will try cutting off the first LED on each strip and trying again. After that, I will remove the whole led strip from the foam and double check my work for a short or something. I will keep posting my results.

  6. #6

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    I tried removing the first LEDs on both strips with no luck on getting either to fire up individually or together. I did this twice just to be sure.
    I inspected the entire strips and see no shorts or anything out of the ordinary - I taped the joint and the ends as per madcow video.
    I reset one of my other hilts to match the number of LEDs - no effect.
    I have two other blades built with the same method that are working in two hilts.

    My instinct is telling me there is something up with the PCB and resistor but not sure how to confirm the resistor is seated. I resoldered it to be sure but no effect.
    I just can't imagine the LED strips are both bad and I believe tested before shipping.

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