4 ms·
So Many LEDs with One Raspberry Pi
- igor47 9y agobasically, this still looks hard. also, i wonder how other applications suffer after all the hoops the OP jumped through, especially networking. looks like i'm going to continue adding a little real-time microcontroller (like a blue pill) just for driving ws2812 to my projects, thankfully the ws2812 tend to be so much cheaper then the spi versions that the cost still ends up being less
- __michaelg 9y agoBeagleBones are awesome for these kinds of things. They are very similar to RPis but in addition to the ARM core they have two embedded hard real-time capable CPUs (dubbed PRUs) that run at 200 MHz.
- dmitrygr 9y agoThis is why BeagleBone uses the Ti Sitara SoC. Besides that arm core(s), it has PRUs which are custom made for precisely this sort of thing: time sensitive bit banging.
- FraKtus 9y agoIf you are on a budget the Arduino is perfect to drive those because you are bare metal and there is no interrupts...