i have installed all the requirements and follow all the given links and i have tested the given tests and they work properly , but my problem currently is for the visualizer , where i have tried many things to make it work but i get no clues , below is the output log when i tried to sudo the visualizer

> sudo -E python visualizer.py
> no output port
> no light port
> Traceback (most recent call last):
>   File "visualizer.py", line 641, in <module>
>     menu = MenuLCD("menu.xml")
>   File "visualizer.py", line 168, in __init__
>     self.update_songs()
>   File "visualizer.py", line 172, in update_songs
>     songs_list = os.listdir("Songs")
> OSError: [Errno 2] No such file or directory: 'Songs'
> 

please guide me what should i do ?

Raspberry pi zero is not available in the Ali Express link you mentioned and its out of stock. I cant buy from amazon cuz there is some problem in there. So can u update a another seller with this item in Ali Express

Hi, do you know how to get the midifiles I am recording with the raspberry?
The are saved in "Songs" but how can I get them to my PC?

Hi there. I set up the raspberry after the github instructions, the leds are working with the strandtest.py examples, but when i connect my piano to the rpi, and run the command:

sudo -E python visualizer.py

It show me the piano name, but says “no playback port” and the leds doesnt light up. Any ideea why?
I dont use synthesia btw, and i use “python3” because if i write only “python” it runs with pyton 2.7, which is not in use anymore (i think).

How I can turn on 2 lead at the same time?

Hello ,

i have been testing the project now for a while and every thing is working very well thanks to the owner of this project , but i am facing currently a small issue which is in this scenario : the RPi and its script is always compiled and turned on but the problem my piano has auto shutdown time when user is inactive maximum to 2 hours so when it turned off i need to cancel the script then turn it on again , so is there any workaround to solve this issue without the need to recompile the script.

Hi Onlaj, how did you wire everything around the first time around? I'm having some difficulty with the breadboard connections.

I'm especially interested in how the waveshare 1.44in lcd hat should be wired up, not so much the rpi to the breadboard (which pretty straightforward)

I wrote that LEDs do not respond to key press.
I found that my piano name is not on the midi input list when I connected RPI to my piano.
But screen saver works well(the screen saver stops if it is not connected to the piano).
any solution?? :(

I followed your guide and operated my raspi.
But when I pressed key, LEDs didn't work(but led animation wokred).
So I formatted my sd card and restarted installation. But the result was same.
what's the problem?? any solution?

Looking through the code, it doesn't seem like output port (outport) really does anything at this time. What is its intended purpose?

I have almost everything working, but I am trying to figure out the Synthesia setup.

Synthesia for the iPad is connected to RPi-Bluetooth, and set to visualizer Input. How would I then get the keyboard connected to the Synthesia?

Do I need to connect the keyboard to Synthesia via a cable?

Can the pi emit two bluetooth midi devices?

Thank you for providing this guide.

Is it possible to edit the code to use with a 61 keys keyboard?
How ?

i cant configure midi connection using telnet. the interface of coding is like a mess and cant copy paste the codes and etc. what can i do

https://www.youtube.com/watch?v=-I_73CZXyI8&t=76s .................... i followed this youtube tutorial from ap piano

After I install all the requirements.txt library and connect the LCD screen
I execute the the command sudo -E python visualizer.py, I got following error.

Traceback (most recent call last):
File "visualizer.py", line 3, in
import LCD_1in44
File "/home/pi/Desktop/pianoled/LCD_1in44.py", line 28, in
import LCD_Config
File "/home/pi/Desktop/pianoled/LCD_Config.py", line 38, in
SPI = spidev.SpiDev(0, 0)
IOError: [Errno 2] No such file or directory

Do you know what this error mean and how can I fix it?

after connected to power rp is working and lcd also work. but lcd hat is showing white display nothing showing in it

Hi Onlaj,

Thanks for the project. Almost everything works.

I only have an issue with the LCD screen. I am using the same waveshare screen.
When the rpi is booting the screen is white (nothing weird). After a while the menu shows. Now when I wait a couple seconds, the screen will be very glitchy and jumpy. Sometimes flashing green and sometimes switching to white again. When it has to white it will not come back to the normal menu untill I restart the rpi.

Sometimes the menu does work a couple minutes, but when I scroll though the menu, I see that key one sometimes needs to be pressed 2 to 6 times to work.

Do you have any idea how to fix this? The screen is brand new.

Thank you in advance and a happy 2020!

Hey man thanks a lot just wanted to ask if I don’t have an LCD screen now bevause of its unavailability , will this device still work without plugging a waveshare lcd screen
Thanks

Hello
I do the installation process in the following order:
First of all, I do the LED connection and install the libraries and activate SPI as your instruction. And after that, configuring automatic midi connection as your instruction.
Of course, I skip BLUETOOTH MIDI settings for two reasons (I don't need it and I get a lot of errors in launching it).
After the above steps, I clone the Visualizer in my Raspberry Pi 3B+ and Using pip install all libraries listed in requirements.txt file but python-rtmidi is not installed and I get the following error message:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package python-rtmidi is not available, but is referred to by another package

I tried other ways but I got another error message:
E: Package 'python-rtmidi' has no installation candidate

Could you please guide me where I am wrong and how to fix it.
regards

I built the project and everything is working great. now when assembling it inside the 3D printed case i find that the screws are too short to poke through the plastic + LCD hat to screw into the standoff. and on the bottom the standoffs aren't long enough to pass through to the bottom. Where did you aquire the standoffs and screws you used and what size are they?

Hi Onlaj,

Thanks for your project!

I have a question about the bluetooth function.

Is the rpi supposed to always send a rpi bluetooth signal so I can connect it to my laptop? Because mine doesn't. When I start the rpi, piano and laptop; I first have to acces the pi with my laptop to excecute the command sudo btmidi-server -v -n "RPi Bluetooth".
Then I can search for a new bluetooth device and connect with rpi bluetooth.

When I restart everything and want to connect rpi bluetooth again, I first have to delete rpi bluetooth in my laptop and search for a new bluetooth device.
Otherwise I can't find rpi bluetooth in synthesia.

I hope you can help me with this issue.
Thank you in advance and a happy 2020!

what I need to use?

After connecting to Dc5v its only lighted up the first led bulb and it was green and others were not. Why is that. Does it need a controller or something to work the whole strip

I'm running the code on a RPi 3 v1.2, the piano has midi capabilities (I've accomplished similar results with an arduino + neopixel) so I know it can send proper midi data through usb.

I've installed the prerequisites and set DisablePlugins= pnat and enabled SPI, I've followed all the instructions and even doubled down on them to make sure the files created were all correct and there weren't any typos.

Here are the issues:

• The LCD is jamming out and flickers like mad - It lights up with the menu upon initially running visualizer but after a couple seconds starts flickering until it reverts to a white LCD.

• When running visualizer in sudo -E the keys don't light up

• When running visualizer in sudo (no -E) they light up but with a noticable delay until an eventual failure

• Upon running sudo -E visualizer python visualizer.py i get following messages:

Inport set to ARIUD:ARIUS MIDI 1 20:0
Inport set to RtMidiOut Client:RtMidi output 131:0
Inport set to RtMidiOut Client:RtMidi output 134:0
Inport set to RtMidiOut Client:RtMidi output 135:0
Inport set to RtMidiOut Client:RtMidi output 136:0
Inport set to RtMidiOut Client:RtMidi output 141:0
Inport set to RtMidiOut Client:RtMidi output 147:0
Inport set to RtMidiOut Client:RtMidi output 148:0
Inport set to RtMidiOut Client:RtMidi output 149:0
Inport set to RtMidiOut Client:RtMidi output 150:0
playport set to ARIUS:ARIUS MIDI 1 20:0
no playback port

I'm using a WS21813 LED strip, and wired it up just like normal however with the backup data cable put to the same GND on the RPi as the GND coming out of the strip. I am confident in my wiring, I think there may be something wrong with Pulseaudio being run in the wrong environment, I briefly got an error message (when running from terminal) stating

xdg_runtime_dir (/run/user/1000) is not owned by us

But it disappeared after reverting to the desktop environment. I've made sure SPI is enabled at all times, I have no idea what to do now and any help will be greatly appreciated!

I followed these instructions to auto run your script: https://www.raspberrypi-spy.co.uk/2015/02/how-to-autorun-a-python-script-on-raspberry-pi-boot/

Used the 'A Script Without End' part because your script uses an endless loop. When I reboot, I get this error message:

Traceback (most recent call last):
File "/home/pi/Piano-LED-Visualizer/visualizer.py", line 641, in
menu = MenuLCD("menu.xml")
File "/home/pi/Piano-LED-Visualizer/visualizer.py", line 161, in init
self.DOMTree = minidom.parse(xml_file_name)
File "/usr/lib/python2.7/xml/dom/minidom.py", line 1918, in parse
return expatbuilder.parse(file)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 922, in parse
fp = open(file, 'rb')
IOError: [Errno 2] No such file or directory: 'menu.xml'

However, the script runs perfectly fine if I manually start it. Do you know how I could make it work?

So I've tried just changing the led count to 98, as well as a few lines under keylist, keylist_status

The resulting behaviour is on the default octave the light activated is an octave too high, as well as being maybe 5 leds too high.
I had a look through the config but I don't see a way to tell the software the first led is the first key of a 49 key controller, and to ignore octave change messages.
Awesome to see the three led option implemented btw <3

Hi, I have gotten the code to work, I am just having trouble getting the cables connected to the GPIO pins. Do you connect the cables before or after you install the LCD hat? When you say wrap, do you mean just curling it around the pin with your finger, or using a wire wrap tool? do you know any tutorials I should watch in order to do this? i am very lost

Hi,
Just having a problem with running the visualizer. I went into library ' cd Python-LED-Visualizer ' then ran ' sudo -E python visualizer.py ' but when running it said 'missing module, import rtmidi' - something along those lines? Have i cloned correctly? And so i need to be in ' Read only Mode for this to work?' ive tried this numerous times becuase my sd sometimes crashes after rebooting. Any thoughts would be appreciated..
Thanks
Harry

sometimes my raspi stops on this screen
Is there a way to solve this problem?

Hey there,

Whenever I insert the usb connector from the rpi to my keyboard, it rarely reads my keyboard, maybe 1 in 50 I will see it activate and appear in the input list, and when it does work, it doesn't last long.

I have tried unplugging everything and reconnecting, reloading the rpi software, buying new cables, and even then it takes many tries, and when it does work, it only lasts for a few minutes before glitching out and being perma stuck on a few lights, or just not working at all. (The LED lights work perfectly when testing the animations)

Is it a hardware or software problem, and can you please recommend a fix?
Thankyou!

Hello. I have a question.
I bought 2m LED strip(144led per meter) and I connected all wires.
However, only 176 LED worked and the rest didn't.
(I have total 288 LED because of 2 meter strip)
Is it right response?
is there a way to make all LEDs work?

Hi, im struggling with lots of errors and have no time to do with this project anymore. Do anybody have working system and is able to share just ready to download iso image from SD card? If yes please share with me. I will be very gratefull. Thanks

Hey man I'm running into this error when running visualizer.py

File "/home/pi/.local/lib/python2.7/site-packages/mido/backends/rtmidi.py", line 34, in _get_api_id return rtmidi.API_UNSPECIFIED
AttributeError: 'module' object has no attribute 'API_UNSPECIFIED"

I've uninstalled any variants of python-rtmidi like rtmidi_python and rtmidi but am still running into the error

Thank you!

I have a slightly different strip (ws2813), how should I wire it to the rpi? Is it possible without a level shifter?

What I am currently doing:
Data: gpio19
Clock:gpio23
GND to GND

When I click my leftmost key on my keyboard, the program crashes with this error. It might have something to do with my keyboard only being 61 keys, but I also followed the tutorial on how to fix that. The lights also aren't aligned with my keyboard.

I successfully installed all the requirements listed in your documentation. By executing the command 'aconnect -l' it gives me the following result:

pi@raspberrypi:~ $ aconnect -l
client 0: 'System' [type=Kernel]
0 'Timer '
1 'Announce '
client 14: 'Midi Through' [type=Kernel]
0 'Midi Through Port-0'
client 20: 'MIDI 1 x 1' [type=Kernel,card=1]
0 'MIDI 1 x 1 MIDI 1'

By executing the command 'mido-ports' I get this:

pi@raspberrypi:~/Piano-LED-Visualizer/tests $ mido-ports

Available input Ports:
'MIDI 1 x 1:MIDI 1 x 1 MIDI 1 20:0'
'Midi Through:Midi Through Port-0 14:0'

Available output Ports:
'MIDI 1 x 1:MIDI 1 x 1 MIDI 1 20:0'
'Midi Through:Midi Through Port-0 14:0'

MIDO_DEAFULT_INPUT not set.
MIDO_DEFAULT_OUTPUT not set.
MIDO_DEFAULT_IOPORT not set.
MIDO_BACKEND not set.

Using backend mido.backends.rtmidi.

Running the test program lightkeys.py fails in line 37 with the following result:

pi@raspberrypi:~/Piano-LED-Visualizer/tests $ sudo -E python lightkeys.py
Traceback (most recent call last):
File "lightkeys.py", line 37, in
inport = mido.open_input('mio:mio MIDI 1 20:0')
File "/usr/local/lib/python2.7/dist-packages/mido/backends/backend.py", line 91, in open_input
return self.module.Input(name, **self._add_api(kwargs))
File "/usr/local/lib/python2.7/dist-packages/mido/ports.py", line 161, in init
BasePort.init(self, name, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/mido/ports.py", line 86, in init
self._open(**kwargs)
File "/usr/local/lib/python2.7/dist-packages/mido/backends/rtmidi.py", line 125, in _open
virtual=virtual, api=self.api)
File "/usr/local/lib/python2.7/dist-packages/mido/backends/rtmidi.py", line 93, in _open_port
raise IOError('unknown port {!r}'.format(name))
IOError: unknown port 'mio:mio MIDI 1 20:0'

Any idea what the problem could be? I searched the net for any issue but couldn't find any result. The strandtest.py runs well and the LED stripe lightens up. I connected my piano using a MIDI-to-USB adapter to the USB socket of the Pi. The Raspberry is running Python 2.7.13. The system is updated with the latest updates/upgrades.

Hey man!
I initially had rpi3 and had this error of delays in the key press as well as some keys dont respond.
Should I change the midi usb cable?
Also I am not using a Power adapter for ws2812b. Direct power supply to rpi and from rpi to lights.
Can this also cause delay? Thanks :)

i build everything like you said in the tutorial and thanks for that!

now i want to buy a raspberry pi 3 , will it work with that raspberry? and what about the display ? do i have to buy another and will another display work with the scripts?

Hi, I got everything working, but there is a delay between midi and audio. Is there a way to fix?

Automatic port setup was added a few days ago in this commit:

5d5df51#diff-20e433b96c154faaedd1c04789627107L609

It would be nice if that could be done when trying to play midi as well:

https://github.com/onlaj/Piano-LED-Visualizer/blob/master/visualizer.py#L369

I'd submit a PR, but I'm a little confused. Was the intent of midi playback to use playport?

if(location == "Choose_song"):            
    play_midi(choice, 'mio:mio MIDI 1 20:0')
.
.
.
def play_midi(song_path, port):
    menu.render_message("Playing: ", song_path)
    try:
        mid = mido.MidiFile("Songs/"+song_path)
        port = mido.open_output(port)
        for msg in mid.play():            
            port.send(msg)  
            if GPIO.input(KEY2) == 0:
                break
    except:
        menu.render_message("Can't play this file", "", 2000)

vs

if(location == "Choose_song"):            
    play_midi(choice)
.
.
.
def play_midi(song_path):
    menu.render_message("Playing: ", song_path)
    try:
        mid = mido.MidiFile("Songs/"+song_path)
        for msg in mid.play():            
            midiports.playport.send(msg)         
            if GPIO.input(KEY2) == 0:
                break
    except:
        menu.render_message("Can't play this file", "", 2000)

FWIW, since I'm coming up to speed on MIDI, it would be nice in the docs to have the purpose of inport, outport, and playport -- even if it is just common sense, and I'm being an idiot :)

Hi, Aleksander Evening, does this possible can control led with two different color for both hand? Like right assign as green and left assign as red.

Hi, thanks for all your work :)
I'm pretty sure I'll have it working once I select the input port, I haven't soldered the pins needed for the screen yet, I think setting it to Bluetooth by default will work as it did for another open issue.

As latency is a concern I want to try using direct usb midi, but I also use the midi for a vst instrument on my laptop (garritan cfx :D)
So I'm wondering can I set my Yamaha piano as midi input then output from the rpi (over a male to male usb cable) to my laptop?

Hi Onlaj,

first thanks for your guide!

Finally I managed to connect the keyboard (Yamaha P-45B) with the Raspberry Pi and Synthesia.
Synthesia is waiting for me to press the keys and the LEDs light up accordingly.

However, I still have 2 small problems/questions, maybe you can help me.

First my setup:
Raspberry Pi 3 Model B Rev 1.2
LCD Display Waveshare Raspberrypi 128x128 (the same one you use)
WS2812B LED Strip currently only 1 meter (I'll change it soon)

Problem one:

As soon as I call sudo -E python visualizier.py as pi user, my screen becomes completely white. Before that it shows the normal Linux console.

Can you explain to me how I get the menu shown on the display where you select the songs?
How do I get this displayed after the Raspberry Pi restart?

I don't know if it's because I was forced into Pythonscript: LCD_Config.py make an adjustment:
from SPI = spidev.SpiDev(0, 0) to SPI = spidev.SpiDev(0, 1)

The reason for this is that I don't have /dev/spidev0.0... i just don't know why

Problem two:

I would like the LEDs to light up before I press the buttons.
At the moment they light up together with the keystroke.

pi@raspberrypi:/usr/led_piano/Piano-LED-Visualizer $ aconnect -l
client 0: 'System' [type=Kernel]
0 'Timer '
1 'Announce'
client 14: 'Midi Through' [type=Kernel]
0 'Midi Through Port-0'
client 20: 'Digital Piano' [type=Kernel,card=1]
0 'Digital piano MIDI 1
connected to: 128:0
connected from: 128:0
client 128: 'RPi-Bluetooth' [type=User,pid=569]
0 'RPi-Bluetooth '
connected to: 20:0
connected from: 20:0

If i run the printmidimessages.py it shows a lot of "clock time=0"..
pi@raspberrypi:/usr/led_piano/Piano-LED-Visualizer/tests $ sudo -E python printm idimessages.py
Inport set to Digital Piano:Digital Piano MIDI 1 20:0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
note_on channel=0 note=59 velocity=49 time=0
clock time=0
note_on channel=0 note=60 velocity=49 time=0
clock time=0
clock time=0
note_on channel=0 note=53 velocity=38 time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0
clock time=0

Thanks in advance!

I would like to build this for my piano but before ordering i noticed that the led strips linked on the github that the one on Amazon isn't the minimum length of 1.5m. so does that mean the only realistic option is buying the "2m 144 IP30" from the aliexpress link?

-https://www.amazon.com/BTF-LIGHTING-WS2812B-Individual-Addressable-Non-waterproof/dp/B01CDTEJR0/ref=as_li_ss_tl?keywords=WS2812B&qid=1563793619&s=gateway&sr=8-3&linkCode=sl1&tag=onlaj-20&linkId=1ec35f385e9049b6ecfb25619d55c562&language=en_US

-https://nl.aliexpress.com/item/32832420003.html?aff_platform=link-c-tool&cpt=1574455768121&sk=dFyC7NO&aff_trace_key=03be746d74954420917d5fcbb464cbf3-1574455768121-07753-dFyC7NO&terminal_id=969ed013c1cb461fb6dc0fc56b144071

Hey, appreciate your work! Quick question:

I had this device built for me and it was working perfectly, synccing to my keyboard no problem for eg. CASIO on the input list. Then suddenly next day, one light on the LED strip perma stayed on, and soon after it became unresponsive.

Now, it reads all keyboards as USB DEVICE, and doesn't activate the lights anymore (but the lights still work when tested using LED ANIMATIONS.

It's definitely not hardware and have tried multiple different cables keyboards and unplugging, it seems to be a driver issue. Any idea how to get it to read my keyboard as CASIO like before? As i suspect this is the problem. Any help/ fix instructions greatly appreciated!!!

Hi, Im quite new to RPI and MIDI and trying to run the visualizer. But get a error;

1. $ sudo -E python visualizer.py
2. Traceback (most recent call last):
3. File "visualizer.py", line 733, in

4. midipending = midiports.inport.iter_pending()
   

5. AttributeError: MidiPorts instance has no attribute 'inport'

I have synthesia on my laptop connected with bluetooth, i can send midi and i can see with the bluetooth test (sudo btmidi-server -v -n "RPi Bluetooth" ) that i receive data on my rpi.

I dont really see a solution for this problem atm. can you help me?

I'd very much like to make this project for myself and for someone else.

However, whilst I can understand the software side, I've never done any soldering or wiring before and neither this nor the reference article go into any detail on how to actually make this up, what type of wiring to use, what type of connectors are required, and how / where to create or solder custom wires.

The closest is a poor graphic showing a splitter wire, but none - as far as google / Ebay searches have demonstrated - can be found.

Is there some way to get more explicit hardware instructions and part list? I'm not interested in breadboards and pin connectors - this needs to be solid for a non-technical person to own / use.

Thanks

Hi ,

Thank you for your effort ! i have been looking for a project like this for a while now :)
Unfortunately i am experiencing some difficulties when using visualizer on a rpi 3b+ (some how no one using rpi zero is concerned by this ... ) . when i touch a key on the keyboard there is a 1-2 second delay ! and when i do it fast , it skips many note !

Thank you .

I don't think this in the scope of an 'issue' but just some extra information for those that try. Synthesia learning set up with RPi bluetooth only worked for me using Synthesia from a windows pc. I tried previously with an ipad and macbook, which both gave erratic results for the 'learning' LED lights (when setting visualiser to RPiBluetooth as input).

If possible and feasible, could you please add functionality to set colors for different piano notes. eg. i should be able to set a specific color for all the keys mentioned below so whenever I hit a specific key in any octave, the same color should light up:
C, D(Flat), D, E (Flat), E, F, G (Flat), G, A (Flat), A, B (Flat), B

Thank-you for the consideration

when i connect my rasp to PC and type "sudo python -E visualizer.py", this message pop up.

Traceback (most recent call last):
File "visualizer.py", line 15, in
import webcolors as wc
ImportError: No module named webcolors

I already install webcolors using "pip install webcolors".
what should i do??