Notes:

- Could make the clock oscillilator an external module, with the SEQ listening for a clock on the 16-pin IDC connector when nothing is plugged into CLOCK.
- A notable issue with this design is the decade counter expects CLOCK to pass 1/2 of V+ (i.e. 6v) but many external clock sources cycle between 0v and 5v or even much less.  
This can be fixed by increasing the gain on the CLOCK op-amp from 1 to something more decisive, like 3x.  Then a signal as low as 2v could works as an external clock.
- One idea: add a switch to disable the clock, and a momentary-on button to advance the step manually.  This requires hardware de-bouncing to avoid multiple triggers on each 
button push.
- Another idea: trigger (button push or CV) starts the sequence, which plays through exactly once, and then stops? Possibly put a switch between pin 15 and the three-way junction, and a NO switch across that switch… it might be fine, just go between +12v and pin 15 with the NO.  with the bonus that you can push it to reset a continually-running pattern whenever you want
- Could replace step IDs with a 7-segment display with a diode matrix to select segments from each step.
- Could add a global/master pitch control/modulation function with a knob and with CV in implement a DC offset via non-inverting op-amp.
- A CV in that pauses the clock and keeps current gate open whenever the voltage exceeds a certain threshold (perhaps useful for feedback effects where one sequencer is interacting with another). More of an experimental functionality
- Input/Output CV to permit chaining of Unseen Servants. For example, Unseen Servant 1 plays its sequence, then hands off to Unseen Servant 2, which plays its sequence and then hands back to Unseen Servant 1 (or hands of to Unseen servant 3, etc.). A jacked CV out with no return implies a play sequence once function?



UI:
  11 potentiometers
  11 SPDT switches
  1 rotary switch, 5+ positions
  10 LEDs
  3 sockets

Potentiometers:
	One potentiometer per step, to set output voltages. (10)
	One potentiometer for internal clock rate.

Switches:
	One SPDT switch per step, to enable/disable gate per step. (10)
	One multi-pole rotary switch to set number of steps.  Exact configuration TBD.
        One SPDT switch to adjust CV output range, switch between 5v and 2.5v max.
	
LEDs:
	One per step, to indicate current step.  (10)
	
Sockets:
	CLOCK in
        CLOCK out
        RESET in
	GATE out
	CV out
