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Documents Repairing a Neewer 660 Studio light - How Hard Can It Be? -- Episode 594
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  • Author Author: tariq.ahmad
  • Date Created: 9 Mar 2023 2:01 AM Date Created
  • Last Updated Last Updated: 17 Mar 2023 8:24 AM
  • Views 21984 views
  • Likes 10 likes
  • Comments 46 comments

Repairing a Neewer 660 Studio light - How Hard Can It Be? -- Episode 594

I’ve got a studio light which has suddenly become faulty, how hard could it be to fix it rather than replace? In today’s episode I try and fault find the PCB to see if its a fault I can fix.

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Bill of Material:

Product Name Manufacturer Quantity Buy Kit
8 bit MCU, STM8S003F3P6TR STMICROELECTRONICS 1 Buy Now
Fixed LDO Voltage Regulator HOLTEK 1 Buy Now
Pluggable Terminal Block WAGO 3 Buy Now
 

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Fault studio light

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Top Comments

  • hifromkatie
    hifromkatie over 2 years ago in reply to RichG +3
    I'm quite tempted to go completely away from the original design and do a 555 based controller, the main operation of the micro was to take the potentiometer input and turn it in to a PWM to the LED driver…
  • RichG
    RichG over 2 years ago +1
    Yes a new project with a microcontroller.
  • beacon_dave
    beacon_dave over 2 years ago in reply to hifromkatie

    Don't forget the likes of sACN, Art-Net, DALI... Slight smile

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  • hifromkatie
    hifromkatie over 2 years ago in reply to Fieroluke

    That does seem like the simple option, ADC to PWM output with a micro is fairly trivial, also like the above suggestion to add DMX control. Considering setting a design challenge for myself by doing a new circuit without a micro, and using 555 (or similar) instead. Will have to finish the current project and then decide

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  • hifromkatie
    hifromkatie over 2 years ago in reply to jc2048

    The thought of adding DMX is interesting, I could make a desk control for it then. Although I'd probably want to modify the 3 ones that still work too, so they could be controlled together. The controller would be an interesting extra project though

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  • scottiebabe
    scottiebabe over 2 years ago in reply to kmikemoo

    Totally agree, I also recognize she has to produce an entertaining and educational video. Whatever she decides to do I know I'll enjoy the video and learn something new, katie is the best!

    I have also recently realized clipchamp is free on windows, what a hoot!

    image

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  • kmikemoo
    kmikemoo over 2 years ago in reply to scottiebabe

    scottiebabe  Totally agree!  To save $2, you have to get into another programming interface.  If you are already using it, not a problem.  If not... Thumbsdown.

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  • scottiebabe
    scottiebabe over 2 years ago in reply to dougw

    Thanks, and Its a fair point! I had to splurge a few more dollars for a rpi pico.

    image

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  • dougw
    dougw over 2 years ago in reply to scottiebabe

    I like it, assuming that tiny MCU that can handle micropython.

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  • scottiebabe
    scottiebabe over 2 years ago in reply to phoenixcomm

    Forget about using C code, go with micropython Heart eyes KISS FTW!

    from machine import Pin, ADC, PWM
    from time import sleep
    
    warmPot = ADC(0)
    warmPWM = PWM(Pin(0))
    warmPWM.freq(1000)
    while True:
        warmPWM.duty_u16(warmPot.read_u16())
        sleep(0.01)

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  • jc2048
    jc2048 over 2 years ago in reply to hifromkatie

    The most obvious thing you could do with a processor, as beacon_dave points out somewhere here, is add DMX. It's quite easy to do if you have some programming experience; the fiddliest bit is usually detecting the break: on some microcontrollers it's trivial, on others you need a bit of lateral thinking to puzzle out a way to do it.

    But totally-analogue sounds good too. As an alternative to the 555 timers, you might also consider something designed with op-amps.

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  • Fieroluke
    Fieroluke over 2 years ago

    Thanks for the video, I enjoyed it! I‘d upgrade the regulator, replace the micro and write a new firmware. Read two A2Ds and write two PWMs, that‘s a breeze…

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