I'm experiencing some strange issue with my Nsynth build. I already spent hours to troubleshoot, but couldn't source the problem. I am very desperate.
Everything seems to be working fine except:
the OLED screen doesn't work (remains totally black)
there is no sound at all
since there is no sound, I don't know if midi signals get processed or not.
I already checked for any soldering bridges and checked for the right polarity of all components.
Even though I'm quite confident in my soldering skills, out of pure desperation I decided to build a second unit with a second set of components (including a new screen). As for the second unit, I followed this advice and left a tiny gap between the 2 PCB to avoid any solder bridges. To my surprise, the finished build shows EXACTLY the same issue as the first one.....
I used Elecrow to produce the PCB according to the build instructions.
I sourced and soldered all components myself (including SMD)
I have a raspberry B+ with the 64gb image.
I also tried it with a raspberry B, but still the same problem.
Nsynth starts up normally. I logged in and successfully flashed the board.
When I connect the Nsynth to a monitor via HDMI, the mini-screen appears on the upper left corner. I can see on the monitor that the encoders, the pots and the touch panel work completely fine.
All pins on the OLED PCB have voltage. So unlike this user, it doesn't seem that bad solder joint are the cause of the problem.
I bridged both the SJ1 and SJ2 on the OLED PCB.
Running i2cdetect -y 1 shows MCU at 0x47, the display at 0x3d and a device at 0x4c.
Hi,
I'm experiencing some strange issue with my Nsynth build. I already spent hours to troubleshoot, but couldn't source the problem. I am very desperate.
Everything seems to be working fine except:
I already checked for any soldering bridges and checked for the right polarity of all components. Even though I'm quite confident in my soldering skills, out of pure desperation I decided to build a second unit with a second set of components (including a new screen). As for the second unit, I followed this advice and left a tiny gap between the 2 PCB to avoid any solder bridges. To my surprise, the finished build shows EXACTLY the same issue as the first one.....
Please help... :/