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Forum Seeking Feedback for Kit on Upcoming LED Design Challenge
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Forum Thread Details
  • Replies 22 replies
  • Subscribers 14 subscribers
  • Views 1487 views
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  • design challenge
  • würth
  • IC-LED
Related

Seeking Feedback for Kit on Upcoming LED Design Challenge

rscasny
rscasny 7 months ago

imageHi All.

As the new year moves on, so does element14's scheduling of new Design Challenges. That's what I want to talk to you about today. Specifically, an LED-focuses challenge. 

We haven't done much with lighting/LEDs (although Tariq may have when he managed Project14), but I have a sponsor who is interested in such a challenge. So, I'm exploring here how to make it work, both in terms of your interest in this activity, a propose challenge kit, as well as any theme it would cover.

In this discussion, I wanted to do a few things. For starters, to share with you the parts the challenge's sponsor would like to see in the design. Now, that does not limit us from adding parts to the kit. The next thing I want to do was flesh out the challenge's objective. Let me start with the parts. There's just a few of them:

1315050930002 LED, AlInGaP, InGaN, Red, Green, Blue, SMD, 120 °, Round, R 13mA, G 13mA, B 13mA

More Info

1313210530000 LED, AlInGaP, InGaN, Red, Green, Blue, SMD, 120 °, Dome, R 5.5mA, G 5.5mA, B 5.5mA

More Info

1312020030000 LED, AlInGaP, InGaN, Red, Green, Blue, SMD, 120 °, Square, R 5.5mA, G 5.5mA, B 5.5mA

More Info

1312121320437 LED, AlInGaP, InGaN, Red, Green, Blue, SMD, 110 °, Square, R 20mA, G 20mA, B 20mA

More Info

Click on this link to see the manufacturer's documentation for these products.

Here's a dual wire diagram for the product:

image

So, the above is kind of bare bones. I expect that there will be much more in the kit depending what the challengers would like to do. Now, what element14 would also include in the challenger's kit would depend on what you would want to do. A few random thoughts about it are:

  • Creative Lighting
  • LED Indication
  • LED Alerting
  • LED Alarming

The sponsor calls out what they see as the leading applications of their LEDS. They are:

  • Appliances
  • Industrial Control
  • Smart Lighting
  • Gaming
  • Decorative Lighting

Now is a good time for a poll:

So, I've offered a lot of information to chew about.

Just for myself, I think it would be fun to do something along the lines of Creative or Decorative Lighting. I would need to include prototyping gear, as well as a kit of support components. Enclosures I would probably not provide since many of you have 3D printers and have that capability; I also would probably not offer any test equipment as part of the kit, but you can always wish for it! I'd probably like to see some PCBs designed and built, with whatever solution you have available.

Now, if you were more interested in something more practical, the designs would require a larger and probably more extensive kit. I'm thinking industrial control panels etc. 

Thanks you for participating in the element14 Communities activities.

What Do you think? If you have the time, please vote in my poll and/or leave a comment.

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Top Replies

  • Gough Lui
    Gough Lui 7 months ago in reply to scottiebabe +2
    That is interesting, but I suspect the current gain 12-bit value is intended for use in white point colour balancing or global array dimming applications, while the PWM level 12-bit value should be the…
  • dougw
    dougw 7 months ago +1
    These devices would be great for decorative lighting applications, the more devices the merrier, literally. A 5V controller like an UNO R4 Minima would allow lots of creative effects. Beyond the LEDs…
  • vmate
    vmate 7 months ago +1
    Wurth Elektronik has horticulture LEDs too, maybe it would be interesting to have a challenge involving growing plants with artificial light?
Parents
  • scottiebabe
    scottiebabe 7 months ago

    Interesting the 1312121320437 is 48bit color

    image

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  • Gough Lui
    Gough Lui 7 months ago in reply to scottiebabe

    That is interesting, but I suspect the current gain 12-bit value is intended for use in white point colour balancing or global array dimming applications, while the PWM level 12-bit value should be the actual image data.

    I suspect the 12-bit gain + 12-bit PWM doesn't net you 48-bits of resolution since some of those values would likely overlap in terms of the effective current delivered. For example - 100% bright at 0% PWM is the same as 0% bright at 100% PWM, or 50% bright at 50% PWM is the same as 100% bright at 25% PWM, or 25% bright at 100% PWM.

    - Gough

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  • Gough Lui
    Gough Lui 7 months ago in reply to scottiebabe

    That is interesting, but I suspect the current gain 12-bit value is intended for use in white point colour balancing or global array dimming applications, while the PWM level 12-bit value should be the actual image data.

    I suspect the 12-bit gain + 12-bit PWM doesn't net you 48-bits of resolution since some of those values would likely overlap in terms of the effective current delivered. For example - 100% bright at 0% PWM is the same as 0% bright at 100% PWM, or 50% bright at 50% PWM is the same as 100% bright at 25% PWM, or 25% bright at 100% PWM.

    - Gough

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  • scottiebabe
    scottiebabe 7 months ago in reply to Gough Lui

    Lots of dI/dt on a string of LEDs, the Ws2812 style LEDs are constant current.

    Still neat product.

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