Rank: Member
Groups: Member
Joined: 12/24/2008(UTC)
Posts: 100
Location: Seattle, WA
|
Hi,
I am trying to figure out how the volume control is supposed to work. I am not sure whether I have a defective relay board or whether the firmware/relayt board is operating normally. When I scan through the volume range with a battery connected to ground and input at one terminal and I measure the voltage between the output and ground terminal I get 0 Volt at the low range but I also get 0 Volt at the high end.
Is that the intended behavior or does this indicate a problem? I would assume that at the high end I should get the full battery voltage back. I gets almost there but then it jumps to zero.
Cheers
Thomas
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 12/24/2008(UTC)
Posts: 100
Location: Seattle, WA
|
I did some more testing today with another relay board and it shows identical behavior. I now have this with 2 controller boards and all my functional relay boards.
On high volume the sounds cuts out before establishing a pass trough. It stays at zero for a few more clicks of the relais. I am wondering what the problem could be.
- Cable not crimped correctly
- Firmware not working as expected
- Relay/controller boards defective
- ...
Russ/Brian would be great to hear from you how this is supposed work.
Cheers
Thomas
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA
Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
|
Ok, this appears to be a firmware bug I introduced last minute. There is an averaging algorithm that it applied to the ADC samples to ensure smooth control. Last minute I upped the number of samples in the average which is causing an overflow (mathematical, not current :)). I think I missed it because at that point I was testing with music and didn't turn it all the way up (married and all).
Anyway, I have it fixed (and tested) and will be sending out new firmware chips.
Good news if it should be fairly usable until the new chips arrive.
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 12/24/2008(UTC)
Posts: 100
Location: Seattle, WA
|
Great to hear. I am glad I was able to be of some service.
Cheers
Thomas
|
|
|
|
|
|
Rank: Advanced Member
Groups: Member
Joined: 2/10/2009(UTC)
Posts: 299
Location: Italy
|
I just received a JT2 (ordered March 3rd). Does this have the updated firmware chip?
Thanks,
Nicolai
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 12/24/2008(UTC)
Posts: 100
Location: Seattle, WA
|
Just switched the new controller Brian send and the updated firmware works like a charm. And yes, my wife pretty much complained instantly when I was trying out the full range  Thanks! Thomas
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
