4 ms·
Doesn't it depend on how many simultaneous strips you want to drive and the no. of leds, for large installations I think an FPGA probably makes more sense?
by anfractuosity 5y ago
Doesn't it depend on how many simultaneous strips you want to drive and the no. of leds, for large installations I think an FPGA probably makes more sense?
- qbasic_forever 5y agoThe signal to drive these LEDs isn't super complex and any simple MCU can bit bang generate it on a digital output. The bigger limitation is usually memory if you're buffering all the color values to animate them, and to a lesser extent raw processing speed to do more and more complex animations and math.
- anfractuosity 5y agoYeah the ws2811 signal is only around 800kHz or so from what I recall, I was thinking to generate say 8+ simultaneous signals from a framebuffer would be more difficult on an MCU than an FPGA, which can do that trivially. But I think some strips like APA102 can be driven at frequencies in the order of MHz using an SPI type protocol (just saw someone claiming 35MHz on the wire)