[Scaling 40 leds over one pattern]

Hi all,

 

I like to use a 40 segment led bargraph and connected it like a 8x5 matrix.
To control it with one single CC, i use five events with different ranges.
 

DOUT_MATRIX    n=10    rows=8    sr_dout_sel1=26    sr_dout_r1=25
EVENT_LED_MATRIX    hw_id=149    type=CC    chn=1    cc=66    range=0:24        led_matrix_pattern=2
EVENT_LED_MATRIX    hw_id=148    type=CC    chn=1    cc=66    range=25:50        led_matrix_pattern=2
EVENT_LED_MATRIX    hw_id=147    type=CC    chn=1    cc=66    range=51:76        led_matrix_pattern=2
EVENT_LED_MATRIX    hw_id=146    type=CC    chn=1    cc=66    range=77:102    led_matrix_pattern=2
EVENT_LED_MATRIX    hw_id=145    type=CC    chn=1    cc=66    range=103:127    led_matrix_pattern=2   

LED_MATRIX_PATTERN n=2  pos=0   pattern=0000000000000000
LED_MATRIX_PATTERN n=2  pos=1   pattern=1000000000000000
LED_MATRIX_PATTERN n=2  pos=2   pattern=1100000000000000
LED_MATRIX_PATTERN n=2  pos=3   pattern=1110000000000000
LED_MATRIX_PATTERN n=2  pos=4   pattern=1111000000000000
LED_MATRIX_PATTERN n=2  pos=5   pattern=1111100000000000
LED_MATRIX_PATTERN n=2  pos=6   pattern=1111110000000000
LED_MATRIX_PATTERN n=2  pos=7   pattern=1111111000000000
LED_MATRIX_PATTERN n=2  pos=M   pattern=1111111100000000
LED_MATRIX_PATTERN n=2  pos=8   pattern=1111111110000000
LED_MATRIX_PATTERN n=2  pos=9   pattern=1111111111000000
LED_MATRIX_PATTERN n=2  pos=10  pattern=1111111111100000
LED_MATRIX_PATTERN n=2  pos=11  pattern=1111111111110000
LED_MATRIX_PATTERN n=2  pos=12  pattern=1111111111111000
LED_MATRIX_PATTERN n=2  pos=13  pattern=1111111111111100
LED_MATRIX_PATTERN n=2  pos=14  pattern=1111111111111110
LED_MATRIX_PATTERN n=2  pos=15  pattern=1111111111111111

  
I know it is not possible to spread 40 leds perfectly over a range from 0 to 127.
But somehow the led distribution is very uneven.
Here is a diagramm to show what happens.

Does somebody know where the problem

is or what i´m doing wrong?

 

Thanks for your help!

 

 

Best regards

Marxon

 

[A really great tool]

I bought it from eBay. Just search "2 in 1 wire cutter".

I can confirm what kpete said, small wires with solid copper sometimes break off.

If this happens, unhook one of the two "return springs" and try if it works better.

Best regards

Marxon

[A really great tool]

Thank you Shuriken!

The link should work now.

[A really great tool]

Hi Midiboxers,

I want to show you a very useful tool.
A wire cutter with built-in wire stripper.
It works really good. I don't know how I could have lived without it before :smile:
Here is a small video:

Best regards
Marxon

[Issue Led_Matrix_Pattern n>4]

Hi again!

 

Found a mistake in the NG manual:

The part about DOUT Matrix pattern says that

up to 8 patterns are possible.

 

Best regards

Marxon

[Issue Led_Matrix_Pattern n>4]

Sorry my fault!

I overlooked that MIOS Studio reports a warning during uploading the .ngc

which clearly says pattern n>4 are not supported.

 

Marxon

[Problems upgrading to full control surface (DIN, LED matrix)]

Hi Ralf,

 

simple question: did you forget to upload your updated setup.asm? :smile:

 

Best regards

Marxon

[Issue Led_Matrix_Pattern n>4]

Hi,

 

i noticed that somehow max 4 led patterns are possible. 

Patterns n>=5 are not working. There is also no debug output from MIOS Studio.

Maybe it is a bug.

 

Best regards

Marxon

 

[MIDIbox FM V2.1 on STM32F4]

Hi Yogi, 

your Synth is a great project for my spring holiday :)

I would be very grateful if you give me your schematics and documents.

 

Best regards

Marxon

[BLM pcb]

Hi electrodancer,

 

would you also trade against some other Midibox stuff?

I have some SIDs, PICs, LEDs, Bargraphs, Potis and much more.

 

Best regards 

Marxon

[Suggestion for the SID-Testtone application]

Hi,

 

I have a suggestion for the SID Testtone application:

How about modifying the application, so that it not just generates a simple sine tone 

but plays a whole sequence with changing oscillators and filters?

This would be a fast and easy way to test whether a SID chip is completely working or not.

 

Best regards

Marxon

[connecting stm32F4 in mios how to]

As said the STM is not supported but it is recommended for other cores running MIOS32 applications (including the LPC)

because it has a higher robustness of SysEx transfers and better a performance then the windows legacy driver.

The GM5 driver also gives multi client capabilities.

[connecting stm32F4 in mios how to]

Sorry there is no possibility.

It was discussed in past:

 

The STM32F401 is very limited, most major applications (such as MBNG, MBSEQ) wouldn't fit into the small flash memory.

 

However, before you throw it away, you could send it to me so that I can provide (and test) a MIOS32 variant for this chip for the case that somebody want's to use it for less complex applications like MIDIO128

 

Best Regards, Thorsten.

 

Where did you ordered your board?

Can you send a link?

[connecting stm32F4 in mios how to]

Welcome to the Club.  :rolleyes: 

Somehow i received a wrong wrong board too.

Same name, but another version.

 

[connecting stm32F4 in mios how to]

You dont need to install a driver.

The driver you downloaded is the GM5 driver and in the description is also written that the STM is not supported . You can use it as alternative to the legacy ("onboard") driver for other cores.

After you connect the Core Module, wait until your operating system has found the interface,

the driver will be installed automatically.

Look in your device manager if some new hardware (usb audio device) is detected. 

If nothing happens then there is something wrong. 

[connecting stm32F4 in mios how to]

So you successfully uploaded the MIOS32 bootloader app to your STM?

 

After flashing you have to use the STM Micro USB port instead the Mini USB port, maybe you missed that?

 

 

Best regards

Marxon

[[solved] MCP3208 faulty?]

The main problem was that my AINSER board did not worked properly. 

I got only random values... Then I noticed that the uc-link and digital-power LEDs remains on

if the core gets disconnected.

To be sure that not maybe the board causes this issue I put the MCP on my experimentation board,

connected Vref to 5V and the issue was still there.

[[solved] MCP3208 faulty?]

Hi Pete,

thank you for your help!

Great news:

When digging through my IC-box, I fortunately found another MCP3208.

With this one i meassure no voltage on pin 20 and my AINSER board is working again :smile:

So the old MCP3208 must be faulty. 

 

Best regards

Marxon

[[solved] MCP3208 faulty?]

Hi Midiboxers,

 

is it normal that there is some voltage on pin 20 (Vdd) 

if only pin 19 (Vref) is connected to power? 

I measure 4,3 Volt. Maybe the chip is faulty?

 

Best regards 

Marxon

[[solved] RGB Led colour question]

Ok thank you for clarification Thorsten.

 

Best regards

Marxon

[LED digit issue]

UPDATE

 

Sometimes strange things happen:

After doing some other work on the Midibox without changing anything relevant 

the problem has gone.  :smile: 

Nevertheless thank you all for your help.

Have a nice weekend. 

 

 

Best regards

Marxon

[Mios 8 problem]

Did you also set the correct ID in MIOS Studio itself?

Try to set it to 1.

[LED digit issue]

I would very much doubt that the double assigning of IDs plays a role if it works three times..

Yes a messed up wiring would also affect the other LEDs.

 

How difficult would it be to swap your displays. E.g. swap display 3 & 4 and see if it is still display 4 which makes the trouble? Just to try to narrow down the problem. 

I allready swaped the output connections of the sr_dout_sel shift register.

It turns out that only LED_MATRIX:1 has this strange behavoir.

[Encoder Filter recomended]

What does Thorsten say about it?

Because MIOS allready has a software debouncing function.

[Mios 8 problem]

Hi,

 

what else does MIOS Studio send and receive when you try to upload Mios8?