Toneczar Openhaus

[Updated 1st August 2014 - The schematic I did this from by UngodFX contained an error around the mids pot and mid voicing switch which stopped the switch from working correctly.  The layout now posted corrects that error.  For anyone who has already built this and needs any assistance in adapting it, post a message in the comments and I'll explain what you need to do.  Thanks to Javi for helping fault find his build and confirm the correction]

Ok loads of people have asked for this and I decided if there was ever going to be a good time to do it, it would be straight after the Mutron II :o)

The 150LNDN3's are available from a few sellers on eBay but they are very expensive.  I think Mouser had plenty in when I was buying though and they were cheap from there, so that's where I'd look.  The 2N1306's are available from a few sellers on eBay but just use any NPN germanium if you don't want to buy anything specially.

The wiring for the expression pedal will depend on which one you're using, but if you know how it is set up it should be easy enough to adapt it in any way you need to your pedal.  Note that if you don't want to include the expression pedal jack, you need to connect Exp 1 and Exp 2 on the board, so just wire one to the other.

A charge pump daughterboard layout has been included with additional filtering to help keep this as noise free as possible.  Note that I have opted here for an LT1054 IC because I think it will be borderline for the current available from our usual ICL7660S.  By all means try that IC, but I think the extra capacity of the LT1054 will make it a good choice.

Info about the original:

the openhaus can create an array of modern, heavy distortion tones from popular amplifiers, without adjusting the amplifiers tone controls away from their optimum clean tone settings.

Short but sweet.  You'd have thought Ed would give his customers a bit more to read during their 5 year wait for the pedal.

Charge pump daughterboard:

Bill of Materials

IC	OPA2604AP	4
Transistor	LND150N3	2
Transistor	2N1306	2
Transistor	2N5457	1
Regulator	78L15	1
Potentiometer	10K Log	2
Potentiometer	100k dual Lin	1
Potentiometer	1M Log	1
Potentiometer	10K Lin	1
Toggle switch	SPDT on/off/on	2
Toggle switch	SPDT on/on	1
Resistors	100R	1
Resistors	150R	2
Resistors	220R	1
Resistors	470R	2
Resistors	604R	1
Resistors	1K	3
Resistors	2K2	1
Resistors	3K3	2
Resistors	5K6	1
Resistors	7K5	2
Resistors	10K	6
Resistors	14K	1
Resistors	20K	3
Resistors	30K	2
Resistors	47K	2
Resistors	56K	3
Resistors	100K	4
Resistors	120K	1
Resistors	150K	1
Resistors	180K	1
Resistors	220K	1
Resistors	470K	2
Resistors	680K	2
Resistors	1M	7
Capacitors	51p	1
Capacitors	330p	2
Capacitors	560p	1
Capacitors	1n	1
Capacitors	1n2	4
Capacitors	2n2	1
Capacitors	4n7	1
Capacitors	5n6	1
Capacitors	22n	1
Capacitors	33n	2
Capacitors	47n	4
Capacitors	100n	2
Capacitors	120n	1
Capacitors	1u	7
Capacitors	22u	1
Capacitors	100u	1
Capacitors	220u 25V	1
Capacitors	470u 25V	1