Hello! I have a patch submodule PCB. I have tried flashing it to check the LED blinking and it works great. My problem comes with the CV inputs. They don’t seem to work.
I have tried examples from the web programmer (Pot input) and the LED always stays on. I have repeatedly checked all connections, tried 5V from another power supply… Nothing seems to make it work.
The audio output works well, in other examples the output outputs a correct oscillator signal, but I find myself unable to change the pitch using a potentiometer. I have already tried other potentiometers, tested that everything goes well and nothing… Any ideas?
Thanks! I know. I’ve tried several modular power supplies etc.
The CV doesn’t work. I’ve tried all the Web Programmer programs and nothing… The CVs don’t respond. It doesn’t seem to be a problem on my part, in the end it’s a potentiometer connector… with CV from my modular it doesn’t respond either.
Is it possible to use the SM without a control PCB? I’m using Arduino type cables to make all the connections.
Audio responds well, In and Outs. CVs nothing… Tomorrow I’ll try with Gates/Triggers…
Thanks
@pyarco I’m not sure what the “I know” means. Have you actually verified the +/- 12v is present on Patch SM with a meter? I ask because it sounds like it’s not from the symptoms you are reporting, and the supplies may not be the issue, it could be how they’re connected or other unknown problems.
How i plug all the conectores. ±12V power supply, GND, 5V Out of the SM direct to Potenciometer’s right leg, GND left leg and middle leg of the pot direct to CV1 Input.
It’s working the DACs works perfect but it’s not working any CV input. I tested all the CV inputs in several test programs for the SM.
Also using all the examples of the web programmer and nothing. I have a tone out of the DAC but i can’t change the frecuency by the CV1
I just want to double check and confirm the following with you:
SM is powered with +12V, -12V, and ground from a Eurorack power supply.
You’re flashing the “Pot_Input” firmware from the “patch_sm_GettingStarted” on the Daisy Web Programmer.
Potentiometer’s middle leg is connected to the CV_1 pin on the SM. And you confirmed that the middle leg is outputting variable voltage between 0.0 to 5.0 volts (measured with the multimeter). For that example firmware, the LED will be on when the value is above 2.5 volt and vice versa.
By the way, this new SM diagram should be easier to read.
And what programming language are you thinking about using? If you’re using C++ with VS Code, you can serial print the values for further testing.
-Yes, is powerer by an Eurorack power supply +12, -12, GND. I tried 2 differente Eurorack Power Supplys, also i tested with a Lab Dual Power Supply.
-Yes, i flashing de Pot_Input. But also i flash other firmware that request variations on pin CV_1, like the one oscillator for tunning the pitch… Nothing happen.
-Yes, pot’s middle leg is connected to CV-1 and i measured with a multimeter.
Thanks for the new SM diagram but it’s not a problem of conection…
I’m thinking to use PD, Max or PlugData. I tested with this 3 and nothing… I can run delays, reverbs (In and Outs works well) Oscillators etc but i can’t control via CV… Also i tested with Arduino.
