Posts by slateboy

This annoyance happens every time i upgrade my KPA OS and has been doing so for the past few years

The browse-pool of rigs all come in a state where the undo light is on. How can that be for a newly loaded (unedited) rig? Something happens during the upgrade process that slightly corrupts all my rigs in the browse pool. I can clear this by saving/replacing the rig. But then why does this issue return every time i upgrade my OS?

Explained in the video-

latest occurrence:

its been happening for most of my OS upgrade-

v8

v7

Quote from V8guitar

Now set my Midi captain up and I think it solves 95% of the switching issues. Very pleased and works great with the KPL. Some sync issues - I wanted the bank up and bank down to be on the KPL but that doesn't work as the midi captain resets it back to what the midi captain thinks it is...

I would change the display and take out the less interesting stuff e.g. voltage and increase the size of the name ( which is the game changer for me, even though its small...).

share your thoughts with the developer. He is open to suggestions. or at least he was when i messaged some time ago

i have the paint audio midi cap std too. A great unit for the price and has flexible functionality. Not yet convinced with the KPP mode as it requires press+hold for moving banks which is not practical during a live show. However the super/geerk mode works nicely.

see here:

Thread

Midi Captain STD controller with Kemper Player

Out of curiosity, i picked up the midi captain and had a play. some good, some not so good and thought i'd share my experience with you all here:

youtu.be/O2760Q79ekc

check out the geek mode at 2:40 youtu.be/O2760Q79ekc?si=st2OuPBo4pqN5pdU&t=161

BTW i an not affiliated with the developer. Still awaiting his support response....

slateboy

April 7, 2024 at 1:38 PM

I also had the mvave unit too. Great for very basic use but the downside is that it works in banks of four whereas the kemper is grouped in banks of five. but quite neat and compact and relatively cheap.

It appears that pressing the bass/middle/treble knobs on the player shows its current value. "Push and hold" on the gain or volume shows the value of that parameter (both knobs have dual-parameter control) so be nice to have similar on the bass/mid/treb too.

How about a double-press or press+hold shows the "saved" value of those parameters or perhaps a double-press resets that parameter to its saved value?

Its nice having the visual feedback of the current value but, like on other units, sometimes handy to know what the initial/saved value was.

I guess there is the potential for these knobs to do other functions when pressed+turned, like the gain and volume knobs currently do. I bet Kemper have something in mind

what power-supply are you using?

I have experienced this when the power-supply gets momentarily interrupted (possibly knocked or wiggled)

Can you check the mains supply feeding this as well as the physical security of the DC plug in the back of the player?

Has it had a nasty knock or something dropped on it?

check this thread out:

Thread

Midi Captain STD controller with Kemper Player

Out of curiosity, i picked up the midi captain and had a play. some good, some not so good and thought i'd share my experience with you all here:

youtu.be/O2760Q79ekc

check out the geek mode at 2:40 youtu.be/O2760Q79ekc?si=st2OuPBo4pqN5pdU&t=161

BTW i an not affiliated with the developer. Still awaiting his support response....

slateboy

April 7, 2024 at 1:38 PM

Quote from Robrecht

The Delay Widener stomp is a dedicated way to achieve this.

regarding the player-model and more economical use of stomps, some users may not have the luxury of a spare slot for this effect.

Plus, its applied to the whole signal rather than just the delay-tails, depending on what you seek to achieve.

Been a bit like lockdown

i wonder how many of us have played more guitar as a result of not being able to access the forum?

Quote from AleFretMaster

Goodmorning everyone, I am sorry that I had not seen this post before. I have still not read all the messages, but if still needded the answer is yes. I created a midi controller with arduino Micro and it works with only one usb cable (no extra power or midi required). But you need an Arduino with us midi capability, and there is only the Micro, the Leonardo and maybe another one. I planned to write a thread about it, but I am postponing it since a lot of weeks. Just remember to insert use the library MidiUSB.h and not the normal one. I also wrote some functions to send NRPN, SysEx and manage their value with a Potentiometer, so it is possible.

Did you have to reflash the Arduino firmware? Be interested to learn about the connectivity as a USB device with the kemper

Worth noting some expression pedals use the TIP as the variable output and some may use the RING as the variable output of the TRS connector.

I believe the Kemper prefers the TIP variable.

what would be great, and i've suggested this before, is tap-based delay where the second delay is a percentage of the tapped-tempo.

Currently if you want big spread delay with a few mS difference L+R you have to have a preset-time delay (ie a fixed mS delay) as its not possible (that i know of) to have a percentage of the tap-tempo delay (other than eighth/quarter/sixteenth/etc)

the otraki should do the job (tried and tested)

Maybe your other device is drawing too much current?

What are its specs?

i did share some sysex code for this here:

Post

RE: Profiler MIDI documentation - information missing on string parameter addresses

ok guys, so digging out an OLD project i started years ago and gave up on, i got as far as controlling the Kemper with midi and retrieving the preset/slot names using system-exclusive. Demo here:

youtu.be/KZTmyCH1Sqs

the bit of code for getting the names via sysex:

(Code, 22 lines)

Sorry, i'm not offering technical support. It has been so long that i done this project i'd effectively be starting from scratch to unravel this lot.

Hope the above helps and shows you what is possible.

slateboy

February 22, 2024 at 4:08 PM

SEND call for rig name

F0 00 20 33 02 7F 43 00 00 01 F7
(you already got this)

What are you receiving back and how are you dealing with that data?

Quote from Burkhard

The Chorus fix is in OS 11, not in Rig Manager.

understood. Have been playing with beta OS11 and it has resolved the chorus parameter problems.

However, i havent been able to hear any change using the crossover parameter on the player, though its not a big issue

Quote from Erikcb

So, i am sending 0xF0, 0x00, 0x20, 0x33, 0x02, 0x7F, 0x43, 0x00, 0x00, 0x01, 0xF7 which according to the manual is the sysex to request the current values of the rig name but all i get for response is the same exact sysex, it's not including the rig name for some reason, do i have to send anything else besides that sysex?

EDIT: I managed to send and receive the messages via software, i need to figure out/find what the performance name sysex is, and find out what's wrong with my code, but we're getting closer!

check you not got a midi-through enabled sending back exactly what you send out

Quote from Erikcb

no worries, i'm starting to make it work, it's taking time, but it's ok, i managed to send sysex and receive them and print on the screen, but i think i have to get it translated or something, cause i'm getting the sysex message as it is, i'll figure it out eventually hahaha

thanks!

It will get returned as another sysex message with the text encoded as ascii characters. Your mission is to extract the hex digits that represent the characters within the sysex message and then convert each into a readable character then output as astring.

SYSEX RECEIVED/returned rig name
F0 00 20 33 00 00 03 00 00 01 47 75 79 74 72 6F 6E 20 54 20 32 00 F7

name/string part (from above) = 47 75 79 74 72 6F 6E 20 54 20 32
decoded acsci characters:
G  u  y  t  r  o  n     T     2
(btw, 20 is a space character)

Quote from Erikcb

Are we sure sending sysex via USB is doable at this point? I've been trying stuff all day and nothing worked, i can't even make the arduino to send sysex, of course not talking about reading them...

I have not done any midi to/from the kemper over USB. I have not reached the stage where i have made (reflashed the arduino to create) a class-compliant (recognisable) USB-midi device. I am only as far as midi over the standard 5-pin, so unable to comment. Sorry.

tap-tempo. that would compliment any delay effects you use

Quote from Erikcb

This is starting to seem pretty hard, i'm ok with "only" using CCs instead od nrpn and the issue with having to press twice for effects is not really too nanoying, i barely enable/disable stuff, but i'd like to use the screen to retrieve info from the kemper, i've been researching for a while, no luck so far

Yes, it can be heavy-going! Take a look at this thread:

Post

RE: Profiler MIDI documentation - information missing on string parameter addresses

ok guys, so digging out an OLD project i started years ago and gave up on, i got as far as controlling the Kemper with midi and retrieving the preset/slot names using system-exclusive. Demo here:

youtu.be/KZTmyCH1Sqs

the bit of code for getting the names via sysex:

(Code, 22 lines)

Sorry, i'm not offering technical support. It has been so long that i done this project i'd effectively be starting from scratch to unravel this lot.

Hope the above helps and shows you what is possible.

slateboy

February 22, 2024 at 4:08 PM

Quote from Erikcb

1) If i use the controller to switch between rigs in performance mode, go performance up/down, enable the tuner and turn effects on/off, what's the advantage of using nrpn agains normal CCs as i was using?

no advantage, i dont think, just use whatever is easier and does the job

Quote from Erikcb

2) My code was not acting properly since the beggining, it wasn't "remembering" the effect status, so some times to turn effects on/off i have to press the button twice (let's say delay is off, i press once, the arduino sends off CC, so it does nothing, and then i have to press it again to turn it on) is there a workaround for that? It's not a big issue for me since i don't play live or anything, but it would be cool to get it fixed.

unless you have two-way communication to read the state of the Kemper (which makes it much more complex) you need to assume the state of effects when selecting a new rig (program/slot change) and start with your arduino in that assumed/reset state

Quote from Erikcb

3) Any idea how could i make the screen to show kemper info? Mostly performance in one row and rig name on the second one, i dont need too much stuff.

Thanks!

you need to send a system exclusive message to retrieve the information which will be returned as another sysex message which you need to de-code and convert it into text. This is next-level midi stuff so make sure youre happy with the first two items first. Alternatively (and much easier) you could "assume" the names-per-bank/slot in the arduino and present these on the screen.