Aux inputs are dead...

[timekeeper]

I have built Synthex's v2.5 pcb with Synthex's v1.8 jack board. The problem is that all my aux inputs are dead! I have thoroughly checked for shorts and break and found none. Also I checked for faulty muxers and found none. Synthex uses pins 23-24 for Tom4 and 25 to 38 for the 7 aux inputs. So he has Tom4 Aux1 Aux2 Aux3 going to muxer3 and Aux4 to Aux7 to muxer4. The strangest thing of all is that Tom4 works correctly! Any suggestions?

[dmitri]

MaxInputs left at default.

[timekeeper]

MaxInputs left at default.

Hello. I am not sure I understood you, but before your latest firmware, I had to manually select the right number of inputs ( I had 20110513 then ) every time I ran MDManager. Now, the number of inputs is detected correctly.

[dmitri]

Number of inputs cannot be detected, hence the MaxInputs must be set manually.

[timekeeper]

Number of inputs cannot be detected, hence the MaxInputs must be set manually.

I see... Can I do it with Sysex? I don't have an LCD display for my Megadrum...

[dmitri]

Number of inputs cannot be detected, hence the MaxInputs must be set manually.

I see... Can I do it with Sysex? I don't have an LCD display for my Megadrum...

No, you have to do it with buttons.

[timekeeper]

Is anyone willing enough to blind-guide me through the process? I mean, how many times I should press each button etc to set it to 32 inputs? A video would also be much appreciated...

[dmitri]

1. Press any button to enter the menu.
2. Press RIGHT 4 times to get to MaxInputs.
3. Press UP 7 times to increase MaxInputs from 18 to 32.
4. Wait 15 seconds to make sure MaxInputs is saved in EEPROM.

[timekeeper]

1. Press any button to enter the menu.
2. Press RIGHT 4 times to get to MaxInputs.
3. Press UP 7 times to increase MaxInputs from 18 to 32.
4. Wait 15 seconds to make sure MaxInputs is saved in EEPROM.

Thanks man. I did it but nothing happens... Megadrum produces nothing on these inputs. Maybe it's because Synthex uses pins 37 to 40 on the AtMega... Never mind. I will probably build another one with your design.

[dmitri]

The fact that all inputs up to Tom4 (inputs 16 and 17) work and noting above it works is a vary good sign that MaxInput is at the default value 18 (provided the firmware version is 20110410 and above). Of course it is also possible that you have a hardware problem for inputs 18 and above. Note that inputs 16-23(Tom4 and Aux1-3) are all on the same MUXer and so go to the same Atmega analogue input pin.