Those. it turns out

Hello jtn that the hard drive is simply idle for more than half of its time? I would even more said - the most shabby propeller gives a speed of 10 meters per second - and here maximum speed (in the best case, with a well-assembled circuit and debugged program) - 400 kb per second (and even then in theory)??? Well... 4% efficiency from the peak (for a seedy propeller)!!!! And use DMA mode in controllers no one tried it? The software mode is too unproductive...