PedalPCB 5-Loop True Bypass Switcher

[Bricksnbeatles]

gonna need a few big boy resistors (or load box) for that

Why? Channel switching would just entail shorting the tip and/or ring to the sleeve in 99% of amps.

Switching between two heads to one cab would require what you’re talking about, but just regular channel switching would be no big deal

 

[owlexifry]

Why? Channel switching would just entail shorting the tip and/or ring to the sleeve in 99% of amps.

Switching between two heads to one cab would require what you’re talking about, but just regular channel switching would be no big deal

yep my bad - i was barking up the wrong tree and didn't delete my comment fast enough

 

[Bricksnbeatles]

yep my bad - i was barking up the wrong tree and didn't delete my comment fast enough

Your idea would definitely be cool too, but idk if it would be something Robert would consider doing. Would be cool if it could select between multiple heads and multiple cabs, like a combo of the radial head-bone and the radial cab-bone

 

[Harry Klippton]

Why? Channel switching would just entail shorting the tip and/or ring to the sleeve in 99% of amps.

Cuz if I'm gonna have one big utility box with a bunch of switches, it might as well include all the big utility functions.

ABY is something I'd be interested in

 

[Giorfida]

I’m gonna be that guy… midi control? (Either allow it to be controlled via midi and/or let it act as a minimal midi controller)?

 

[Coda]

How fast will it be able to do the Kessel Run?…

2:40 to 3:00 is the money shot…

 

[LukeFRC]

I sometimes wonder why loopers don’t have the audio pedal inputs and outputs in an enclosure underneath the pedal board and just the switches in a tiny box on the outside.

 

[Robert]

I sometimes wonder why loopers don’t have the audio pedal inputs and outputs in an enclosure underneath the pedal board and just the switches in a tiny box on the outside.

I've actually been thinking about something like this for a while. A MIDI controlled switcher with no actual footswitches on the switching unit itself.

 

[giovanni]

I've actually been thinking about something like this for a while. A MIDI controlled switcher with no actual footswitches on the switching unit itself.

I think the GigRig has something like that?

 

[benny_profane]

I've actually been thinking about something like this for a while. A MIDI controlled switcher with no actual footswitches on the switching unit itself.

What are we, robots?

 

[LukeFRC]

I've actually been thinking about something like this for a while. A MIDI controlled switcher with no actual footswitches on the switching unit itself.

I've seen someone who does that ... can't remember who but it was for sale on Basschat


and then the foot switches could sit in a enclosure about the size of the switches screwed/velcrowed onto the front of the pedalboard.

 

[Robert]

I'm sure quite a few exist in rack format.

 

[Joben Magooch]

Off the top of my head Morningstar makes a couple of bypass switchers that are midi controlled, no foot switches on the unit itself. I think a handful of folks make similar

 

[Mentaltossflycoon]

And a Bluetooth page turner.

No, not for sheet music... just in case I want to read a book.

I once silently watched the big lebowski on a trumpet players IPad in the pit during a professional performance of West Side Story. Using it on a book isn't actually that far fetched.

Low brass gets a lot of rests and tacets in the theater world. Pay per note was off the charts.

 

[bhcarpenter]

For a while I’ve been contemplating building a midi controlled relay bypass daughterboard to go inside of the stomp box itself. The idea is to have a midi controller swap presets to turn the stomp boxes on and off automatically, while retaining the functionality of the footswitches and LEDs on the pedals.

 

[Robert]

Spoke with Hugo, 1032L drilling is coming next month.

Working on a design that uses dipswitches for bank settings.

 

[Robert]

For a while I’ve been contemplating building a midi controlled relay bypass daughterboard to go inside of the stomp box itself.

It should be relatively easy to add that to something like the Intelligent Relay Bypass module.

What type of connector would you use? 1/8"?

I need to take a crash course in MIDI... I'm not familiar with things like knowing which messages / channels you'd use for various functions.

I've used MIDI, but only in plug-and-play situations that didn't involve much (or any) configuration.

 

[Giorfida]

It should be relatively easy to add that to something like the Intelligent Relay Bypass module.

What type of connector would you use? 1/8"?

I need to take a crash course in MIDI... I'm not familiar with things like knowing which messages / channels you'd use for various functions.

I've used MIDI, but only in plug-and-play situations that didn't involve much (or any) configuration.

It’s amazing that it’s been around for over 40 years now, and has been relatively unchanged (something almost unheard of in the datacom world). Also surprised that for how old it is, how much of a mystery it is to a lot of us.

That said, from what I’ve been seeing in my limited research, it’s quite simple to configure using an arduino compared to what they likely used in 1983!

Thinking of midi, and how the I/o is specified to use optical isolation to avoid ground loops, I would also want to question if the use of isolated jacks are going to be recommended as the potential for ground loops goes up with a switching box like this.

 

[bhcarpenter]

What type of connector would you use? 1/8"?

Yeah, 1/8” trs like the MIDI enabled Boss pedals.

MIDI is a serial protocol that’s supposedly pretty easy to implement if the microcontroller has a UART. Here’s what I had in mind, though it could probably be simplified:

One microcontroller for the MIDI interface, and then a separate microcontroller for each relay needed by the pedal (so two for a dual footswitch pedal, etc).

MIDI Module: ATTINY212

• 2 pins UART
  • MIDI In
  • Program # to expansion modules
• 1 pin Digital I/O
  • (opt) Save button in
• 1 pin External Clock
• Persistent Memory [4 bits]
  • [4 bits] Channel #

Expansion Module: ATTINY412

• 1 UART In
  • Program # from MIDI Module
    • Resend current program to save current setting to persistent memory
• 4 Digital I/O
  • Footswitch in
  • Relay On Control out
  • Relay Off Control out
  • Relay Status LED out
• Persistent Memory [128 bits]
  • [128 bits] Program # -> On/Off

MIDI Implementation:
- Program Change : recall setting
- CC 119 (any value) : save current settings to preset specified by the CC value

 

[bhcarpenter]

I would also want to question if the use of isolated jacks are going to be recommended as the potential for ground loops goes up with a switching box like this.

Good question! I believe only the MIDI in jack would need to be isolated, right? Unsure though. Maybe the input would be grounded to the box, and the rest of the jacks are isolated?