Generate kick, snare, and hihat MIDI notes at random intervals. Specify random interval for each note in herz or quantized note values (4n, 8n, 16n, etc.). Random velocity or a fixed velocity can be set for each note. Also, a probability of skipping each note can be specified per drum note to better shape the output. Finally, a global pitch mod can be set along with the probability of each generated note being modded by that amount. This gives you the ability to set alternative drum samples for each note (for example, an open hihat).
RanDrum, random MIDI drum note generator Max for Live device