Electronics > Projects, Designs, and Technical Stuff
Need help designing a load selector!
rdl:
--- Quote from: WyverntekGameRepairs on May 29, 2020, 08:30:47 pm ---The RGB LEDs im using are like regular LEDs, these just have integrated circuitry that drives the colour changing effect with the internal diodes. It has the same anode and cathode as regular LEDs.
--- End quote ---
I think this is the problem. You need a standard RGB LED that has individual leads for each color and one common.
WyverntekGameRepairs:
--- Quote from: rdl on June 01, 2020, 03:41:36 am ---
--- Quote from: WyverntekGameRepairs on May 29, 2020, 08:30:47 pm ---The RGB LEDs im using are like regular LEDs, these just have integrated circuitry that drives the colour changing effect with the internal diodes. It has the same anode and cathode as regular LEDs.
--- End quote ---
I think this is the problem. You need a standard RGB LED that has individual leads for each color and one common.
--- End quote ---
Bad idea. I don’t have the circuitry to drive a standard RGB LED in such a way that it fades from colour to colour softly. I could use capacitors and a logic array to drive the register, but that would take more power. I’m trying to keep this as low power as possible.
--- Quote from: MarkF on May 31, 2020, 07:39:46 pm ---Another option to drive the LEDs is the ULN2003B darlington transistor array.
--- End quote ---
That could definitely work! I do happen to have a couple laying around.
rdl:
--- Quote from: WyverntekGameRepairs on June 01, 2020, 05:56:37 pm ---Bad idea. I don’t have the circuitry to drive a standard RGB LED in such a way that it fades from colour to colour softly. I could use capacitors and a logic array to drive the register, but that would take more power. I’m trying to keep this as low power as possible.
--- End quote ---
It's not an "idea".
I sounds as if your LEDs are "attention grabber" type with only two leads, a power and ground connection (anode/cathode), which go through a preset color-changing/fading/blinking/whatever sequence when power is applied. If that is the case, you will never be able to do what you want. The only control you have over what they do is turning them on and off.
MarkF:
Pretty lights: https://youtu.be/X4d-Nk955JE?t=887
--- Quote from: rdl on June 02, 2020, 12:12:08 am ---The only control you have over what they do is turning them on and off.
--- End quote ---
Turning them On and Off is ALL he wants to do.
rdl:
No.
He said "Here is the sequence I am going for: Red, Green, Blue, RGB, Off."
If the LEDs he has are what I think, that can't be done. However, some clarification as to what he is actually using would help.
--- Quote ---
The RGB LEDs im using are like regular LEDs, these just have integrated circuitry that drives the colour changing effect with the internal diodes. It has the same anode and cathode as regular LEDs.
--- End quote ---
Something similar to this is what it sounds like he has.
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