What power do you use for Kordbot?
I just received my Kordbot and there aren't any power adapter or cables included.
I was hoping to use one of my power adapter but the input only reads 9-12V DC.
I'm worried I might break my Kordbot if I plug in a power adapter with a reversed polarity and what the recommended amperage is.
Has there been any announcements regarding this matter?
I found this out like 1 day before leaving for KnobCon. Sadly, the STM USB driver just happily reports no errors no matter what happens. So I'll have to "fix" their code as soon as I can. The problem is that it starts USB and sits there waiting forever for an acknowledgement from a USB host which isn't there...
In the meantime, there is a workaround or two. Not a great thing to have to do but one of them should work. Requires an SD card be in the KordBot. It will skip the USB booting unless it finds a specific file on the SD card. If that file isn't there, it will boot in power only mode. But it does require a KordBot system disk. Note that when the USB boots, the splash screen only shows the KordBot logo. When USB is disabled you will see the ISLA Instruments logo as well...
1): Obviously, just make sure to connect to a device that knows what USB MIDI is. I have used a PC under Windows 7 and an Android tablet.
2): Same as above, but then go into the File Manager and insert an SD card. Mount the drive then select "Format card". After that, select "Create System card". Finally, go into the Settings menu and uncheck "Start USB on boot". Then power down and connect to a USB power-only device, keeping the SD card in the slot.
3): You can create the SD card on another computer. Obviously a complex series of things to do, but here goes:
a): Format the SD card as a FAT32 (although I believe 16 also works) with the volume name of "KORDBOT SYS". Once that exists, create two folders in the root: KORDBOT and USERDATA.
b): In the KORDBOT folder, create 2 sub-folders, AUTOLOAD and SYSDATA
c): In the USERDATA folder, create a folder called PROJECTS.
d): In the USERDATA/PROJECTS folder, create a sub-folder named CATEGRY0
e): Done 😀
f): With no power to the KordBot, insert the SD card and plug it into a power only USB (or use a center positive 9-12v DC power supply).
One thing to note - if your voltage is high, you might be putting a strain on the voltage regulator inside the Kordbot. If you can find a 9v adapter (500 mA or more), that would probably extend the life of the Kordbot. It can handle it (for example, a positive 5 volt regulator LM7805 is rated to handle input voltages between 7 and 25 volts), but any excess is dissipated as heat. Note that you need to supply some voltage above the minimum for it to properly regulate, and since the Kordbot folks say 9-12v, it's probably using a 5v regulator.
All just a guess of course since it seems that Brad and Bill only hang out on Facebook these days.