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Home › Forums › Ideas / Suggestions / Feedback › SMMw Hazarai Mod – preset footswitch
I really like my SMMH. And I think it’d be great to have an extra footswitch to cicle all the saved presets (instead of reaching down, turning the knob and clicking it).
If EHX would do that mod, would pay for it.
I bet you could do it with a bit of hacking an arduino. EHX won’t mod their pedals sadly
Well, it’s not an easy thing to do.
First, it’s a 4 layer pcb – full of that cool digital wizardry. Then, without a schematic, we aren’t going anywhere.
Hazarai has that JTAG connector which is used to upload the software.
Being it digital, it could be easily programmed to accept an extra footswitch.
I understand that. But I think there’s a way to hack it.
The hazarai knob is a rotary encoder:
http://en.wikipedia.org/wiki/Rotary_encoder
All you have to do is make an addon box (Which would have a lot of wires feeding to the SMMH) that is wired up in parallel with the onboard rotary encoder. The PWM functions of the Arduino could emulate the rotary encoder’s square waves.
You could program it a way to use one switch to perform all the functions, or you could use multiple switches, which would be easier.
Yeah, I was trying to figure out the solder connections to the pcb in a gutshot but no luck. May have to peek inside my pedal this weekend.
If you can access where the hazarai knob is soldered in, it’s definitely doable.
I’d bolt a nano or an XO sized enclosrure to the side, and rewire the input jacks to be in the additional enclosure. Wire up power, and wire an arduino and a switch or two or three in.
The arduino you’d have to program of course, but the software is free. . . the board costs 25-30 bucks, and hooks up VIA USB.
Yes, I’m familiar with the Arduino thingie… I was hoping I didn’t have to resort to other ‘devices’.
Another problem is that besides being able to chosing the mode I want (what the encoder does), it has to activate the saved preset (that’s what the switch does).
Darn, it’d be nice if it wasn’t to tricky. I’ll take a lot at it this weekend.
Well that function is just a momentary switch. You could have a 2nd momentary switch on the same unit, or program the arduino to emulate a momentary switch hit a couple milliseconds after it emulates the encoder.