Aussie_CrocHunter
Well-known member
Hi,
I used a teensy 2.0 and other poeple's tried and true code to run a simple usb midi controller with 6 footswitches. It worked perfectly.
Then I decided to just use 3 footswitches and 12 potentiometers as a second project.
Here's the issue: If I just solder a single potentiometer to the teensy directly to A0, ground, and vcc it works perfectly. When I connect more there seems to be random chatter or noise that the teensy converts into MIDI CC signals. The footswitches still work flawlessly as well.
So: 1 pot = Perfect
Footswitches by themselves = perfect
more than 1 pot = random chatter.
any help? I wonder if the amount of wire needed for 12 pots is picking up interference but how could I possibly avoid that?! I'm not using excessive loops of wire or anything. Is there a known Issue I am missing in terms of hooking it all up together? The potentiometers are cheap ones but they all seem to be fine when working on their own (B10k)
View attachment DJTT_DIY_MIDI.ino
I used a teensy 2.0 and other poeple's tried and true code to run a simple usb midi controller with 6 footswitches. It worked perfectly.
Then I decided to just use 3 footswitches and 12 potentiometers as a second project.
Here's the issue: If I just solder a single potentiometer to the teensy directly to A0, ground, and vcc it works perfectly. When I connect more there seems to be random chatter or noise that the teensy converts into MIDI CC signals. The footswitches still work flawlessly as well.
So: 1 pot = Perfect
Footswitches by themselves = perfect
more than 1 pot = random chatter.
any help? I wonder if the amount of wire needed for 12 pots is picking up interference but how could I possibly avoid that?! I'm not using excessive loops of wire or anything. Is there a known Issue I am missing in terms of hooking it all up together? The potentiometers are cheap ones but they all seem to be fine when working on their own (B10k)
View attachment DJTT_DIY_MIDI.ino