So this is something what a lot of people have been looking for. An option to control the Monotribes pitch and gate via CV. While the Monotribe's ribbon controller is nothing else but a resistor, more to say likea pot, i soldered some cables to the spot where the ribbon controller is connected to the main pcb.
I first did some test with a 10K pot what worked very fine, because the ribbon controller is a 10K pot. Second attempt was a photoresistor. The result is available here.
Final attempt was to build up a four step 4017 sequencer like the baby 10 type, but with slight modifications. I used the schematics presented on this site: FONIK.
I modified the cv out by adding a transistor, so that the cv out works more like a resistor and not like a real CV. The inspiration came from the midibix wiki (see Option 2 schematic) And that works excellent with the monotribe. The 4017 i used can be greatly clocked by the Monotribe's sync output.
If you need more information on the schematics... please leave a comment, so i will know that someone is interested and i have a reason to sit down and draw the stuff together.