Today Korg released the hardware step sequencer SQ-1 that have a dedicated output for littlebits: http://www.korg.com/us/products/dj/sq_1/
According to a picture the output from the machine goes direct in to the littlebits oscillator with a new kind of wire. So you don´t need the coming CV bit.
You find the picture on this side:
(The direct URL to the picture was to long for pasting here).