Anyone using these and got it working with a Photon? I’ve used lots of APA102 strips with Arduinos and all works well. Tried the simple example(blink, from the online lib) on Photon but it appears to do nothing except randomly light a couple of LEDS when it starts up. I notice the code won’t compi…

@steeley , take a look at this topic: [image] SmartMatrix APA102 Library / Open Hardware Photon APA102 Shield Libraries Hi, I’m Louis, and I made the SmartMatrix Library and SmartMatrix Shield for Teensy to make it easy to display high quality graphics on low cost multiple…

Thanks - looks like that might have potential, Although it doesn’t work for me, Despite using the exact instructions on giithub. I think I’ll just stick with the Arduino boards for my LED stuff as that works fine for now.

What are the exact features you need of the FastLED lib for your APA102 LEDs? Since their protocol is rather close to what SPI does, you can take advantage of the DMA capabilities of that interface and it’s dead easy to run these LEDs off A3/A5 on the Particles.

Thats a good point - could go via SPI. Don’t need anything special - just had a load of existing FastLED based code that I thought I might use.

I had no trouble using the library called “dotstar.”

If it helps, this is how I control my APA102 strips #define LED_COUNT (600) uint32_t AP102[LED_COUNT + (LED_COUNT/16 + 1) + (1)]; // LEDs + (at least 1 leadout clock bit per 2 LEDs) + (extra byte as lead in for next round) uint8_t brightness = 31; volatile bool dmaReady = true; void cbDMA() { …

FastLED with APA102 leds not working

Troubleshooting

peekay123 December 30, 2016, 6:32pm 2

@steeley, take a look at this topic:

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FastLED with APA102 leds not working

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