after running Volumio on several RPi’s for the last months, I would now like to move one step further and add a display to one of the machines. I bought a HD44780 16x2 display and followed AndyPi’s tutorial step for step, but can’t get it to work. mpdlcd cannot connect to lcdproc, no matter what I try. I tried different Pi models (B, B+ and 2B), result is always the same. During reboot after the installation, I already get a message that mpdlcd is unable to connect to lcdproc. LCDd is running, mpdlcd is running, mpd is running, but the display shows nothing but a row of white blocks. When I try to run the extra command that is added to the bootmisc.sh manually, this is what I get:
root@volumio:~# su pi -c "mpdlcd --no-syslog &"
root@volumio:~# WARNING mpdlcd Connection failed: [Errno 111] Connection refused
WARNING mpdlcd Connection failed: [Errno 111] Connection refused
WARNING mpdlcd Connection failed: [Errno 111] Connection refused
ERROR mpdlcd Unable to connect to lcdproc localhost:13666.
I tried several other tutorials (Bob Rathbone, Schnatterente and others), they all work fine and the included testscripts display exactly what they are supposed to, so I can assume thet the display itself is working fine. Unfortunately, I am not a developer and therefore not able to adjust one of those scripts to display informations from Volumio.
I have no clue how to get this solved, I searched and retried for weeks, but I am totally lost now. Any hint on how to trace the issue and get it working is highly appreciated.
Thanks for the quick reply. Just tried that, but it results in the same error:
pi@volumio:~$ sudo mpdlcd --no-syslog
WARNING mpdlcd Connection failed: [Errno 111] Connection refused
WARNING mpdlcd Connection failed: [Errno 111] Connection refused
WARNING mpdlcd Connection failed: [Errno 111] Connection refused
ERROR mpdlcd Unable to connect to lcdproc localhost:13666.
Very strange, especially because I seem to be the only one having this issue in Volumio (looking at the Google results for the error message).
Hi All,
I have found the solution. The problem was that LCDproc was not up and running. There were 3 reasons for this:
The HD44780 driver needs to be updated to support an RPi2
The settings in the LCDd.conf need to be correct.
3.I had the mapping of LCD connections incorrect.
I used the instructions in the AndyPi website http://andypi.co.uk/?p=334, but there are a couple of snags to fix to make it work:
Make sure the fixed driver is installed in the correct directory. Actually the directory is pointed at by the config file. I am consistent with the original build directory. The working file for an RPi 2 can be found here http://ehc.ac/p/lcdproc/patches/21/#b8f3. Paul Webster has kindly posted a link to the hd44780.so file on the site. You can grab it using this command:
Next there is a bug in the AndyPi LCDd.conf file. Here is the file in full. Use an editor to set it up like the file pasted in below. This must go into /etc/LCDd.conf. Best to reboot the RPi after changing it.
I have read numerous posts that have different mappings of LCD pins to GPIO pins. With various changes in HW over the years. All that matters is that the LCDd.conf correctly captures how your LCD is connected to the RPi GPIO pins. The defaults are shown in my file below
All the other points on the AndyPi website are OK and getting the mpdlcd to run is as it says.
Have fun!
baloothebear4
[code]## LCDd.conf - base configuration file for LCD display server
Setup for use with an HD44780 16x2 display on an Raspberry Pi 2
For use with Volumio v1.55
v1.0 Baloothebear4 4/6/15
[server]
#… Note this is where the HD44780 driver needs to go ==>
DriverPath=/usr/lib/arm-linux-gnueabihf/lcdproc/
Driver=hd44780
ServerScreen=no
sounds good, thanks for the update. I will give it a try in the weekend. Really curious to see if it works for the earlier models as well, as there should be no driver issues with those. I’ll let you know if it worked.
Cheers!
Edit: I can confirm Baloo’s solution works fine on a RPi 2B. I did not yet have the time to try on an older model, will do asap.
I have the same issue - Raspberry Pi B (not 2), tried two different LCDs with HD44780 driver (20x2, 20x4), followed AndiPi instructions - everything went well and no errors. When I re-boot RPi the display whows one line “full” (all pixels highlighted) and the second line dark.
When I use commad:
I double checked the pinout of the LCD, changed the pin config in “sudo nano /etc/LCDd.conf” properely - pind + GPIOs. It seems to be ok.
I have also tried the modifications recommended here for RPi 2 but it doesn’t work and I’m still receiving the same error message.
It seems that the installation went well (no errors) and I can modify the configuration / files mpdlcd.conf and LCDd.conf.
Any idea what can be wrong? I’m not a SW guy so I would appreciate any help.
Just a thought,
is lcdproc running ?
I can’t remember exactlly but something like
sudo service lcdproc start
should do it.
And after try to launch mpdlcd
I have followed exactly the guideline and everything was ok, now errors. But it simply doesn’t work and I’m not sure why.
I have several times checked the wiring and it seems to be ok as well as the data signals ssigned to GPIOs in the LCDd.conf file.
I have also replaced the display wih the other one (both using HD4480 driver). Still the same - not working.
It seems I have made some progress - I have tried this example: pi-fidelity.blogspot.ca/2013/05/ … t-two.html
and it works! I have tried the python code from this web as well as run sudo mpdlcd --no-syslog and both work well - I can the text on the display.
So what is the difference between AndyPi guide (that doesn’t work ) and above mentioned guide (that work)?
I found one difference and it is that the lcdproc is located in different placed in both examples:
/home/pi/lcdproc/ (AndyPi example - doesn’t work for me now)
/usr/lib/lcdproc/ (PiFidelity example - works for me)
Can it be that this is the reason why the code from AndyPi example doesn’t work with Volumio and RPi B?
Facing another problem now. With Baloo’s solution, I managed to get the display running in combination with a RPi 2B. Now I want to connect an ES9023 DAC using wiring as described here: 2nd-volumio-project-kitchen-radio-t2820.html
For the display, I tried using the default pins (those that were commented out in Baloo’s LCDd.conf at first):
D7=18
D6=23
D5=24
D4=25
RS=7
EN=8
GPIO 18 is also in use by the DAC, so I tried changing D7 to 17 and connected the cable to pin 11, but after restart, display shows only the famous row of white blocks. Same thing happens with other ports as well. Do I have to change any other file in order to make this work?
Display and DAC work great when running alone, combining them does not seem to work so far…
Help me Please!
My project:
Raspberry Pi 2 + Volumio 1.55 + LCD 16x2 (hd44780)
I did as Andypi project and modify like baloothebear4 's guide but the result as below:
The newest modified for Pi 2 I download from here: ehc.ac/p/lcdproc/patches/21/#b8f3
** The working version of AndyPi: andypi.co.uk/downloads/bootmisc.sh
LCDd.conf: I delete all content of AndyPi and using code of baloothebear4
Mappings of LCD pins to GPIO pins ok
For the display, I tried using the default pins (those that were commented out in Baloo’s LCDd.conf at first):
D7=18
D6=23
D5=24
D4=25
RS=7
EN=8
hey man, i had have this situation just totally like you. finally i found the answer.
the question is, your LCDd.conf did have right config of DriverPath.
try to type in your terminal:
lcdproc (or) sudo lcdproc , you would got the error message. it’s because your system did not found this application.
try:
sudo nano /etc/LCDd.conf
then find:
DriverPath=/location/
check this folder, it should not exist.
then, search your raspberry, which folder “lcdproc” dose live in “/usr/lib/_______/lcdproc/”
copy it. then paste it in your LCDd.conf. reboot, it shall done.
