Ok, everyone. I want to be able to switch Presets on my DL4 with Midi.
The DL4 has 3 Presets and a Tap Tempo Switch.
I plan on adding reed relais in parallel to the 4 Switches and to cut the ground connection to the Rotaryswitch on the left (enables looper mode)
Let’s get to it. In my guitar rack contains a midiio128 V2 as a kind of brain (controlling loops and switches) and I plan on using one output of the brain ( i use sub D 9pol so I have 8 switching functions, powered by uln2803 @10V )
I read in the description
Two modes are configurable in the midio128.ini file:
Normal Mode: on incoming program change events, the appr. output pin will just toggle from 0V to 5V and vice versa
_Alternative Mode:_on incoming program change events, all output pins (assigned to program change) of the same channel will be set to 0V, but the pin which is assigned to the channel and to the program change value will be set to 5V
From what I understand Alternative Mode means:
I assign pin 1 2 3 to pc 1 2 3 on Midi Channel 2
and when I send PC 1 it turns on Pin 1 and Pin 2 and 3 off
and when I send PC 2 it turns on Pin 2 and Pin 1 and 3 off
and when I send PC 3 it turns on Pin 3 and Pin 1 and 2 off
right?
This will not effect other pins set to CC Changes and stuff, right?
I will also have to develop a monoflop circuit that will send out a short 5V pulse when an input is connected to ground (ULN2803 switches to ground). This won’t be to hard some RC-transistor thing will to the job.
Am I missing anything here?