Ah, I misunderstood - you want to change the number of inputs? You can do that from the web interface. By default it creates 8, just disable 6, 7 and 8 and you should be good
Sure, the configuration is all in
Just change
src/falk-pre-conf.h. Lines 15 and 16 are what you're looking for:
C++:
// ====== HOW MANY INPUTS ====== //
#define INP_MIN 1
#define INP_MAX 4INP_MAX to 5.Thanks, but it's not enough.
I had to add an item on this line. App.js L250
It works, but it's not clean. Because you have to manually enter the source customization in wifi.
I didn't understand how to make it natively supported.
I had to add an item on this line. App.js L250
It works, but it's not clean. Because you have to manually enter the source customization in wifi.
I didn't understand how to make it natively supported.
L250 in that file is only for testing, it shouldn't be used in a production build. Enabling the input in the file I mentioned above should be all you need. You will need to rebuild and upload the code, the web UI just shows what the preamp is configured for, so if you increase the inputs to 5, it should magically appear in the web UI too.
Hello Gilphilbert
So to change the name of the line input, how do you do it?
Example: (Input 1 = Phono) (Input 2 = CD)...etc.
Thanks
So to change the name of the line input, how do you do it?
Example: (Input 1 = Phono) (Input 2 = CD)...etc.
Thanks
You can do that in the Web UI. Connect the Pre Amp to the wireless and browse to the IP address. You can enable/disable the inputs, give them names and even select icons for them
Hello Gilphilbert
What transformer power do you recommend for the construction?
Does the Unbalanced input board not have the ground plane in the common audio part?
Regards
What transformer power do you recommend for the construction?
Does the Unbalanced input board not have the ground plane in the common audio part?
Regards
Hello,
I have a problem with the scaling of my volume map.
Although the relays stick and unstick, the variation does not take place, I have 25k at 0% up to 80%, after gradually, I go down to 3k for 100%.
Where in the program do we see the logarithmic distribution?
Where is this sequence written?
Why when I press Mute all the relays do not unstick?
I am quite perplexed because my card corresponds perfectly to the wiring diagram of GitHub.
Do you have any idea? A procedure to debug my problem?
I have a problem with the scaling of my volume map.
Although the relays stick and unstick, the variation does not take place, I have 25k at 0% up to 80%, after gradually, I go down to 3k for 100%.
Where in the program do we see the logarithmic distribution?
Where is this sequence written?
Why when I press Mute all the relays do not unstick?
I am quite perplexed because my card corresponds perfectly to the wiring diagram of GitHub.
Do you have any idea? A procedure to debug my problem?
Hello Mandragora,
Indications on this link
https://github.com/gilphilbert/falk...rol/advanced-control-board#building-the-board
The list of parts here
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=2cf1408eac
Indications on this link
https://github.com/gilphilbert/falk...rol/advanced-control-board#building-the-board
The list of parts here
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=2cf1408eac
By making a diagram, I understood why I measured 25K.
Since there is a common ground on the resistors in parallel, we also measure them.
However, I remain convinced that there is an error on the switching program.
Because I still have the sound that only evolves from 80% and I have plocs at 50% as well as at 75%
Since there is a common ground on the resistors in parallel, we also measure them.
However, I remain convinced that there is an error on the switching program.
Because I still have the sound that only evolves from 80% and I have plocs at 50% as well as at 75%
I have studied the volume control board well.
I saw that this staging was taken from
https://www.amb.org/audio/delta1/
However, it cannot work for asymmetrical tuning, because when all relays are driven, the smallest resistance value in parallel is close to 0 Ohm and thus shunts the source.
On https://www.vaneijndhoven.net/jos/attenuator-calculator/index.html the staging looks more logical. But has anyone already made a staging with 8 relays that works?
I saw that this staging was taken from
https://www.amb.org/audio/delta1/
However, it cannot work for asymmetrical tuning, because when all relays are driven, the smallest resistance value in parallel is close to 0 Ohm and thus shunts the source.
On https://www.vaneijndhoven.net/jos/attenuator-calculator/index.html the staging looks more logical. But has anyone already made a staging with 8 relays that works?
I did the sequence of relays to understand a little more.
We see that the problem starts from relay 7.
In my opinion the program is not the right one or the diagram is not correct.
Can you give me the compliant versions?
We see that the problem starts from relay 7.
In my opinion the program is not the right one or the diagram is not correct.
Can you give me the compliant versions?
In Mute position the equivalent resistance is 103.75R
At 1% 101.1R
At 3.5% 94.45R
At 6.5% 87.35R
At 15.3% 74.9R
At 19% 67.75R
25.3% 79.45R
50% 24.9R
At 1% 101.1R
At 3.5% 94.45R
At 6.5% 87.35R
At 15.3% 74.9R
At 19% 67.75R
25.3% 79.45R
50% 24.9R
Hi Pierrot 74
Are you only having problems with the volume?
Is everything else working fine (input selector, web interface, etc.)?
Unfortunately I don't understand programming, I hope someone from the community can help us.
Regards
Yes, after several checks, the problem isn't the programming, it's the calculation of the resistor scaling.
I have a Chinese model, but with 7 relays, it uses different values.
It works fine with the same programming.
I don't know how to calculate the 8th value.
R1S=2.74k,R1P=825k
R2S=5.49k,R2P=402k
R3S=10k,R3P=200k
R4S=18,7k,R4P=82.5k
R5S=30.1k,R5P=33.2k
R6S=42.2k,R6P=9.31k
R7S=487k,R7P=1k27
R8S=???,R8P=????
Rfinal 50k
I have a Chinese model, but with 7 relays, it uses different values.
It works fine with the same programming.
I don't know how to calculate the 8th value.
R1S=2.74k,R1P=825k
R2S=5.49k,R2P=402k
R3S=10k,R3P=200k
R4S=18,7k,R4P=82.5k
R5S=30.1k,R5P=33.2k
R6S=42.2k,R6P=9.31k
R7S=487k,R7P=1k27
R8S=???,R8P=????
Rfinal 50k