Modular Synth Panels

The hard constraint so far as the row of switches is concerned is only that the BYPASS switch is 1/2in from the edge of the panel because it's a 4PDT switch and needs the space.

BTW, let's all remember that it only comes as a regular "bat" toggle rather than the flattened ones that are MOTM standard.  Will was considering disassembling a MOTM standard SPDP switch to see if we could transplant the toggle (assuming matching blood-types).

At any rate - the point is that wherever that bypass switch is placed (it makes sense to be either the left or right extreme), it needs about 1/2 in on either side of its center.  Other than that there's plenty of room for another switch like the On-Off-On (M201302) switch Scott's mentioning.

OK - well - there's another possibility re the bypass switch - use two DPDT 201202 switches - one for left, one for right.  I'm starting to like that idea better.

But anyway - Scott - could the 1V/oct tweak function be handled by a panel-mount trim pot a-la the Living VCO?  (Trimmer (assumes 100K): Mouser# 594-43P104 and Panel-mount: Mouser# 594-611)  That would save space on the panel, too.

If BYPASS is implemented with two switches, LFO MODE with an on-off-on,  and a BPOL switch added, I think we could still fit it all nicely if we use a panel mount trimmer for 1V/oct rather than a pot-and-knob.

Just thinking.

Bill




--- In ModularSynthPanels@yahoogroups.com, Scott Juskiw <scott@...> wrote:
>
> I don't have the PCBs yet but I'm already working out some of the  
> details for this module. Bill and Will already have a panel proposed  
> for this (search for "flanger" on this page):
> 
> http://www.dragonflyalley.com/billAndWillMOTMSynth.htm
> 
> which I like, but there are some options to consider.
> 
> 1. You don't need a rotary switch for LFO MODE. You can use one of  
> those 3 position centre-off switches. This frees up pot space for a 1V/ 
> Oct tweak pot (this is shown as an option in the schematics). JH has  
> mentioned (on an electro-music forum) that the 1V/Oct tracking is not  
> so good, so having a front panel pot may be a good idea.
> 2. Can add a jack for LFO OUT (will likely need to add a buffer as  
> well). This would be post-LFO MODE switch, so the output will be  
> either ramp, slewed square, or S&H depending on LFO MODE setting.
> 3. There is a BPOL (bounce polarity) switch on the schematic. Hmmm,  
> first one who builds one of these will have to let us know if it's  
> worth implementing or not.
> 
> I'm still trying to figure out how best to hook up the LED. Should it  
> indicate the LFO (i.e. post-LFO MODE switch) or the total delay time?  
> This doesn't change the panel layout. I'll need to try out different  
> things after I get the boards in.
>