Starting my zynthian build: alternative LCD, DAC, encoders


#21

Hey @mheidt, @wyleu (and all users :slight_smile:), can you help me with this doubt?

What is the best way to put the encoders with MCP23017 and MIDI IN / OUT / THRU with this mounting (see the photo posted previously)? Do you exist any way? Or I’ll have to buy / mount the BUS cable ribbon?

I am thinking in to change my LCD to a 5" HDMI model to make the “periferal” conections more simple. The zynthian supports touch over USB?

I have remembered too this thread with my question (Alternatives to ribbon bus cable?). It’s a good way?


#22

I am not sure if all 3 midi ports are possible with v1. With the AllInOne board, it’s just plug and play.
I just bought a WaveShare 5 HDMI and it worked out of the box…I just switched it in the webconf and even touch worked. But check the model. The H version is the one I took.


#23

I am with two issues, and have tryed so many ways to solve them but without success. The first, is the inverted X axis with my LCD touch. The second: I cannot got audio with my audioinjector. On this moment, I’m downloading a new raspbian image and will to test the DAC on a fresh system, because I suspect if my my unit have some problem.

On my last reply, I told that my touchscreen was working, but when I activated the cursor at the webconfig, I realized the X axis inverted.

I’ve tryed too configure the LCD as CUSTOM config, but without sucess. When I use the xinput-calibrator, the touch orientation works perfectly, recognizing the four points, but when I’ve updated the 99-calibration.conf with calibrator output, got no success.

UPDATE: With pure raspbian, the audioinjector worked like a charm. In the same raspbian OS, I’ve installed the driver from waveshare tutorial https://www.waveshare.com/wiki/3.5inch_RPi_LCD_(A) and got the touch working without problems too.

So, why the official waveshare 3.5A driver worked with my LCD perfectly with raspbian and doesn’t worked with zynthian system? I compared the two files waveshare35a-overlay.dtb of the zynthian project and waveshare driver and they are the same (binary same).

And why I’m not got audio with the audioinjector (Audioinjector Stereo)? When I test the “Audio test” on zynthian UI interface, I get a message with a wav path and when I touch again, a red error message apears quickly and back to system screen: “Error: b’Registered as JACK client prevent the lastbits of audio to vanish out o 2.5/2.5 Audio Player for Layer…”.


#24

This is probably not helpful but I also have a Waveshare 3.5A clone and AudioInjector and All In One board. Everything works except touch in Zynthian. I’m not very experienced with Linux sadly, but I grew up using MS-DOS commnd line and Windows 3.1 so bash doesn’t scare me :grinning:

In Raspian I was able to get both the Touch feature and AudioInjector to work. But I think this was without the All In One board. Sorry I’m probably repeating myself again on this forum.


#25

In my case, I’m using just audioinjector stereo and LCD Waveshare 3.5A. All worked perfectly on raspbian. Now I have the touch working, but with X axis inverted.

I have a good update: have flashed with the Zynthian Gorgona, updated it, and installed the audioinjector .deb package, following the instructions from https://github.com/Audio-Injector/stereo-and-zero:

  1. wget https://github.com/Audio-Injector/stereo-and-zero/raw/master/audio.injector.scripts_0.1-1_all.deb
  2. sudo dpkg -i audio.injector.scripts_0.1-1_all.deb
  3. audioInjector-setup.sh
  4. reboot
  5. alsactl --file /usr/share/doc/audioInjector/asound.state.RCA.thru.test restore
  6. reboot

Now I know how to download a file from terminal, install a .deb package and run a script hahahahaha

And voilá! Got my mojo working

And have tested with a usb midi controller =)


#26

With the @rod_amaral help, I finally got sucess on LCD configuration (and how to disable the built-in mic from audioinjector).

To disable the audioinjector microphone, I’ve followed these steps:

  1. alsamixer
  2. F5
  3. Navigate to MIC Option and press space.

To enable the audioinjector RCA inputs, I follow these steps:

  1. alsamixer
  2. F5
  3. Enable L/R CAPTURE to LINE and change INPUT Mux to Line In.

To configure the touchscreen, I’ve followed these steps:

  1. apt-get install -y xinput-calibrator (to download/install the touchscreen calibrator)
  2. Create a file calibrate.sh with the content:
    #!/bin/sh
    xinput_calibrator -v
  3. chmod +x calibrate.sh (to make it executable)
  4. systemctl stop zynthian (stop zynthian)
  5. startx ./calibrate.sh (start the calibrator)
  6. Touch the four points on the screen
  7. Update the 99-calibration.conf with the result of calibrator run
    Section “InputClass”
    Identifier “calibration”
    MatchProduct “ADS7846 Touchscreen”
    Option “MinX” “3868”
    Option “MaxX” “63578”
    Option “MinY” “61610”
    Option “MaxY” “2901”
    Option “SwapXY” “0” # unless it was already set to 1
    Option “InvertX” “0” # unless it was already set
    Option “InvertY” “0” # unless it was already set
    Option “TransformationMatrix” “-1 0 1 0 1 0 0 0 1”
    EndSection

At end, I’ve changed the LCD to PiScreen 3.5 V1 on the webconf.

So, at now, all hardware I have was configurated.

Next steps:

  1. build the MCP23017 board to use my zynthian with encoders (I’m considering to buy the all-in-one board from zynthian shop (with the bus cable). Will it work with audioinjector?
  2. build the midi in/out/thru board
  3. build the enclosure
  4. Enjoy zynthian with the new partner behringer motor 61
  5. Buy pianoteq

#27

That MOTÖR-61 looks like the new official Midi controller in my mind at least ( techno lust rating medium.).

could we cover it with MIDI mapping?

Doesn’t look too good . . .

But apparently the firmware update fixes this stuff . . .

Be good to see a video with the new firmware.
@jonathaslacerda
Have you got one yet?


#28

I’ve bought my MOTÖR-61 it last wednesday, but just will arrive on 07/31. Course we can to map it! When arrive, I’ll upgrade the firmware and test it


#29

I’m considering to buy the all-in-one (v2) board from zynthian shop (with the bus cable). Will it work with audioinjector?


#30

Audioinjector doesn’t need rewiring.


#31

It should work perfectly with AudioInjector :wink:


#32

Thanks @jofemodo and @mheidt. I’ve bought an MCP23017 module and will build a simple board just for prototype and test. I think on the final version I’ll to use the official board =)