After finishing the VCO I started my next project. This time it’s not a module, its an additional device to change the midi channel on the fly. It is inspired by one of Sam’s music videos and his keyboard with the build-in midi channel knob.
The problem: All of my keyboards didn’t have a fast way to change the midi output channel, you have to go down into several menus and set the midi output channel, which will take a lot of button presses and a lot of time, very bad for live performances. So I decided to design this small box with an Arduino, an OLED display, some buttons/encoders and of course midi in and out.
With the 3 buttons you can select 1 of 3 saved output channels, you switch them by simply pressing the button. By using the encoder you can select and edit all parameters - the 3 output channel presets and the input channel. The Arduino translates the channel data of all incoming midi messages to the new selected channel and sends them to the output port.
For the future its possible to extend the functionality, e.g. to add some filter to the messages, or to change other midi data as well.
At the moment this project exists on my breadboard, next step is to design a pcb and a nice small case.
I will publish the code and the schematic once its finished, maybe it will be useful for someone.