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Faulty LED Stripe? Please help.

Discussion in 'Hyperion General' started by CaptainHero, 10 June 2017.

  1. Noob

    Noob New Member

    Messages:
    9
    Hardware:
    RPi3
    I have absolutely the same problem

    so sir, how you fix it? just adding the level shiffter?
     
  2. CaptainHero

    CaptainHero New Member

    Messages:
    23
    Hardware:
    RPi1/Zero, RPi3, iMX6
    Well i figure its probably one of two things or maybe the combination of both:

    1. Added the level shifter into the circuit.
    2. Added another 5V line towards the middle of the led strip as well as also connected the 5V and ground at the end of the led strip. This way the current of 5V is consistant throughout the whole led strip which i believe is deffinately helping in that sense that the led strip is behaving/responding to commands better.
     
  3. Noob

    Noob New Member

    Messages:
    9
    Hardware:
    RPi3
    Can u link me to the level shifter you use?
    BTW, I notice when I connect the 5V at the strip end to DO or DI in the beginning all the led is bright blue.
     
  4. CaptainHero

    CaptainHero New Member

    Messages:
    23
    Hardware:
    RPi1/Zero, RPi3, iMX6
  5. exomarty

    exomarty New Member

    Messages:
    4
    Hardware:
    RPi3
    I have the same problem
    Can you add a photo or scheme of the level shifter integrated into the wiring?
     
  6. Akriss

    Akriss Active Member

    Messages:
    386
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    Post #2 of this thread has a scheme. ;)
     
  7. exomarty

    exomarty New Member

    Messages:
    4
    Hardware:
    RPi3
    Thank you
    Whats the best way to connect level shifter and all the wires? It seems like a lot of connections to the ground
     
  8. Akriss

    Akriss Active Member

    Messages:
    386
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
  9. exomarty

    exomarty New Member

    Messages:
    4
    Hardware:
    RPi3
    Yes i run a raspberry pi 3 and apa102 leds
    I checked that posts hut i dont how that are related to this issue
    Anyways i think for the wiring i need a design board in order to have clean connections
    I found this products

    The level shifter
    https://thepihut.com/products/adafruit-74ahct125-quad-level-shifter-3v-to-5v-74ahct125

    Ic socket
    Not sure if this one will work as it has 16pin instead of 14
    https://thepihut.com/products/adafruit-ic-socket-for-16-pin-0-3-chips-pack-of-3?variant=27739784721

    Board for connection
    https://thepihut.com/products/adafruit-tiny-breadboard?ref=isp_rel_prd&isp_ref_pos=1

    I’m noob about this electronics components so not sure if these will be enough

    Thank you for the support
     
    Last edited: 16 August 2018
  10. Akriss

    Akriss Active Member

    Messages:
    386
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    You may not need a level shifter. If your wiring is well done and led count is low (150 -\+). A level shifter is solution to specific problem (uncontrollable led's due to long wires/ signal loss/ cross talk/ etc..)

    Take a look at this persons setup. ( https://hyperion-project.org/threads/apa102-ambilight-project.2701/ ). I'm fairly sure no level shifter was used and it looks to use shielded wires.

    This is a level shifter I soldered together for my setup. (https://hyperion-project.org/attachments/152126-jpg.837/)

    That ic socket is a prototyping board. I would not use that for the finished product.

    Most of what you seek has all ready been asked and answered on the forums here. Take some time, read up. It's worth it. It's a great project for beginners and seasoned hobbyists.