RM22 Footswitch

[Taipan]

Hi Guys
I hope im asking in the wright place ,
I just bought a second hand RM22 but the guy never had the footswitch
Looking around there dont seem to be any for sale

Looking through a few old threads there dont seem to be any schematics
on the foot switch either to make my own

Just wondering has anyone come up with a way to channel switch the RM22
without the original footswitch ?

I have tried my footswitch for the RM100 but that dosent do anything
Any help or suggestions would be greatly appreciated

Regards

 

[buriedorburned]

The 22 takes the same footswitch as an RM50. It's a Randall RF1, they're very easy to come by, and fairly cheap.

 

[galao]

The RM22 footswitch has of course nothing to do with the RF1. It uses a DIN connector but no MIDI protocol. The channel switching of the RM22 is based on a AT89C4051 microcontroller. The heart of the PCB inside the footswitch is a programmed PIC chip. This is definitely not a DIY project.

 

[Jaded Faith]

Galao is correct on all counts. These are NLA, require a custom controller and a DIY solution is not an option. You will have no option but to watch the markets for one available unfortunately.

 

[buriedorburned]

Oops, my bad. The page I read indeed lists the RF1 as compatible with the RM20 and RM50, but not the RM22. Sorry!

 

[Taipan]

Thanks guys
I thought it would not be an easy pedal to make

Can someone tell me the actual name/code for the RM22 footswitch

Searching the internet isnt doing much when I type in RM22 footswitch
I need to be more specific

Thanks

 

[galao]

The footswitch has no name or code. They were only sold with the RM22 amps and I would doubt that someone sells one seperately except he lost his amp and the only thing left is the footswitch. :lol:

 

[Taipan]

:shock:
Hmm so is there any other way to channel switch the amp ?

I dont even care about the boost modes , just want to switch channels at gigs

 

[mfgobbi]

:shock:
Hmm so is there any other way to channel switch the amp ?

I dont even care about the boost modes , just want to switch channels at gigs

There is a button on the amp's front panel.

 

[Capt_Tippy]

There is a button on the amp's front panel.

:shock:

Bwhahahahaa :lol: :lol: :lol: :lol:

:shock:
Hmm so is there any other way to channel switch the amp ?

I dont even care about the boost modes , just want to switch channels at gigs

If you were motivated and brave/skilled enough to do it, you could hack that button on the front of the amp, and build a single button footswitch to control the channels. Its just a momentary button. All you'd have to do is attach the wires to a 1/4" jack and run it to a foot pedal.

 

[Taipan]

Bit hard to press bottons while playing in the middle of a song
getting it spot on without missing a note

Anyway thanks for the input guys

 

[audiomidijace]

You might try to contact Randall. There's a chance they might still have a few hanging around. Good luck!

 

[Taipan]

You might try to contact Randall. There's a chance they might still have a few hanging around. Good luck!

Yeah Thats my next step , just in case I couldn't get any help there
Im looking for alternative switching devices

Cheers :wink:

 

[tschrama]

Isn't it just a mono jack? than prolly any footswitch will work.. be it Marshall.. Mesa.. Peavey.. I use then interchangebly.. or make ur own for 10 bucks

 

[Capt_Tippy]

No its not a mono jack. That's why I suggested he could hack the button and add his own mono jack to the amp.

 

[tschrama]

O... so it's a multi pin DIN connector. But you can.buy those easaly too.. just find out which pin are use for which function and connect en stompbox type footswtich.

 

[Capt_Tippy]

O... so it's a multi pin DIN connector. But you can.buy those easaly too.. just find out which pin are use for which function and connect en stompbox type footswtich.

I'm pretty sure there's a controller involved (Read some of the rest of the thread before you comment ). I was just saying the front switch could probably be wired to a 1/4" jack and hooked to a foot switch and bypass the controller.

 

[tschrama]

Offcourse the footswitch interfaces with the uP... if only so it can controll multiple optocouplers , leds, .. but there is absolutely no reason the have a uP inside the footswitch.. that would just unnessecarly complicate the footswitch.

 

[Taipan]

I just sent Randall and email regarding having any of the foot switches in stock
or have a schematic on the footswitch ......see what happends

 

[webrthomson]

This is a gut shot of my RM22's pedal - it's definitely something bespoke:

It does appear to be on a RF3 PCB?