As a challenge to myself I wondered what the smallest usable pedalboard could be.
After playing about with a single row of pedals (and not being too happy TBH) I remembered an older iPhone11 64GB that my eldest daughter had and no longer used as she has an iPhone14 (a better phone that myself).
Putting Amplitube or BiasFX2 on an iPhone or iPad is easy, however you need a digital interface and really a battery as these things all take power. and an iPhone 11 with a dodgy 3rd party battery rather than an Apple battery.
I had an iRig 2 HD doing very little and numerous batteries.
So I laid all this out and started holding things together to see how small it could be.
So a single piece of 2040 aluminium extrusion for the base 252mm long, its longer than the iPhone 11 as the battery and iRig 2 fit underneath and are held on by some purpose built clamps.These have wires and the ends take up space. I inserted the iRig into the side clamp so that saved a bit of space.
The cables might get smaller and neater if I can find the right ones from eBay, AliExpress or Amazon.
I also had an M-Vave Chocolate four switch MIDI pedal lying around. It has four switches and two options per switch, quick press and long press. Programmed it up to send eight different messages, and using the live section of BiasFX2, I had it to switch between different different pedalboards, but I could have a single pedalboard and have the M-Vave turning individual pedals on and off.
I plugged it into a Yamaha HS-7 monitor speaker and it's really good. I've no doubt an HX Stomp or Quad Cortex is better, but for the an old iPhone 11, an iRig 2, a battery and an pedal switch, none of which were being used, a cheap solution to a pedalboard and a very small one. The iPhone 11 has no issues running anything on BiasFX (so far), Bass sounds fine as does guitar.
Its 260mm long and 90mm wide. I can also put an iPad on if I wanted a bigger display. I checked the balance point.
I suspect my daughter may claim it for herself, but I'd have no issues taking this out for practise, the battery will provide about eigh hours of use.
Rob