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Hello,

I'm a musician who is trying to build a sampler for my M-Audio USB MIDI keyboard using my Raspberry Pi 3B, a 32GB SD card with the latest version of the SamplerBox image flashed to it, and an audio hat called AUDIO+ from RaspiAudio. I would like to store all my samples on this SD card, and I would rather not have to use a screen or thumbdrives in order to make this work. I am also aware that I can control which MIDI triggers switch samples or alter effects by editing the code.

Problem #1)
I don't know how to set up my audio hat on SamplerBox, as the instructions are for a normal copy of Raspi.
The audio hat I'm using is called AUDIO+ from RaspiAudio. It uses GPIO, and it uses the following pins:
GPIO21, GPIO19, GPIO18, Grnd, 3.3v
The installation instructions tell me to run this on the command line:

Code:
sudo wget -O - script(dot)raspiaudio(dot)com | bash

If I type that without the sudo in SampleBox's terminal, will it add functionality to this external soundcard?

Problem #2)
I cannot figure out how to add samples without using the thumbdrive. I reserved a 32GB SD card specifically for this project specifically so I wouldn't have to use a thumbdrive, as to have a more compact setup. I would like to know how to access the /samples/ partition, make it RW, and expanding the partition. I bought a 32GB SD card just for this project, and I really don't want to mess with thumb drives, because there's only a few instruments I'll need for my live performances.

I am grateful and appreciative of any help. Thank you so much. Smile

- Ryan

This is Ryan. I just registered an account so I can follow this thread and get notifications. Really grateful for the help and all of the work you've put into this site.

EDIT: Since this site allows links, here are the installation instructions for a normal Pi running on Raspian:
https://pinout.xyz/pinout/raspiaudio_audio#

Hi Ryan,
Welcome and thanks for your kind words.
As promised I will try to be of help.

First of all: editing the code itself should almost never be necessary.
Most things should be done via the configuration files. I admit this can look so intimidating that it seems like "changing the code".
But editing should normally be limited to one-time editing of *.txt and *.csv files as indicated in the docs.
I tried seriously to take out the need of editing *.py or *.cpp and such. If however there is good reason for doing so, I appreciate to be informed as this may indicate a missing feature worth adding.

Problem#1
That's right, the missing driver has to be installed in such a way. However as samplerbox is very basic, somewhat more care is needed than with an ordinary linux desktop.
As samplerbox is currently single user=root-only, sudo cannot be used for root privileges as they are default.

This also means caution and making sure to have backups or other means for rollback.
You need to have both boot and root parttions writable (see Commandline access and debugging) and you need to have the box connected (wired/wireless) to a network with an internet connection. Attaching to home network normally does the trick.

I expect that there will be an extra include in /boot/overlays and some changes in /boot/config.txt.
If this works as expected, then in best case scenario samplerbox will recognize the card an pick the right option for routing the sound (high quality cards always have several options).
I expect the the onboard IO (bcm2835) will replaced and not be present anymore.

When starting up by hand, you should see the discovery messages in the console log; points of attention are next messages:

Available audio devices: and the "sub"lines following
Opened audio device <details> and the "sub"lines following
Opened Alsamixer: <details>

As startup is multi-thread, messages of MIDI opening and starting HTTP gui may interfere, that's normal.

Problem#2
For enlarging, the "Can I use the internal sample space..." FAQ points to the build page to which I have nothing to add here except for "yes, this is DIY". Rolleyes

The FAQ also has guidelines on how to access it

Last remark: allowing links is a bit of an experiment. If it attracks spammers I might turn it of. As for this link, you may have recognized the pin illustrations as I took "connecting peripherals" illustration on the build page from there.

Hans, thank you so much for your attention and help on the matter.

When I try to make the boot partition rw from the SamplerBox CLI, I get the message "mount: can't find /boot in /etc/fstab". Same with the samples partition. What am I missing? Confused

Also, when I try to install the driver for the audio hat, I get "wget: unable to resolve host address 'script.raspiaudio.com'
I have my pi hooked up directly to my router via ethernet and can access it from my PC, but I am wondering if the pi itself is connected to the internet?

Hi hdoa,
What command did you use, with me it works as documented:

Code:
root@samplerbox:~# ls /samples

0 Demo    1 MidiPlayer  2 Saw  lost+found

root@samplerbox:~# touch /samples/test

touch: cannot touch '/samples/test': Read-only file system

root@samplerbox:~# mount -o remount,rw /samples

root@samplerbox:~# touch /samples/test

root@samplerbox:~# ls /samples

0 Demo    1 MidiPlayer  2 Saw  lost+found  test

Same results for /boot.

As for the internet connection, I'm experiencing the same. In older versions it worked - guess we have to wait for Hans - or someone else who knows.

I was apparently using the wrong version of SamplerBox.

I was using an old 2017 distro from the official site.

I just downloaded the 2020 one featured on homspace and I am currently attempting to resize the samples partition using fdisk. However, it's not letting me delete because it says "no partition is defined yet". Currently working on it.

As for the internet / external soundcard thing, I hope we can get that figured out soon.

(18-02-21, 01:25)hdoa Wrote: [ -> ]As for the internet / external soundcard thing, I hope we can get that figured out soon.

If you don't have internet access on your Samplerbox, you can save the script in a personal folder on your SD card once you've got read/write control working. This is also true for any files you might need on that system in the future.

Code:
#!/bin/bash

: <<'DISCLAIMER'

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

OTHER DEALINGS IN THE SOFTWARE.

This script is licensed under the terms of the MIT license.

Unless otherwise noted, code reproduced herein

was written for this script.

- The PiZeroAudio Crew -

DISCLAIMER

# script control variables

productname="RASPIAUDIO DAC+ and SPEAKER+ models" # the name of the product to install

scriptname="pizeroaudio" # the name of this script

spacereq=1 # minimum size required on root partition in MB

debugmode="no" # whether the script should use debug routines

debuguser="none" # optional test git user to use in debug mode

debugpoint="none" # optional git repo branch or tag to checkout

forcesudo="no" # whether the script requires to be ran with root privileges

promptreboot="no" # whether the script should always prompt user to reboot

mininstall="no" # whether the script enforces minimum install routine

customcmd="yes" # whether to execute commands specified before exit

armhfonly="yes" # whether the script is allowed to run on other arch

armv6="yes" # whether armv6 processors are supported

armv7="yes" # whether armv7 processors are supported

armv8="yes" # whether armv8 processors are supported

raspbianonly="no" # whether the script is allowed to run on other OSes

osreleases=( "Raspbian" ) # list os-releases supported

oswarning=( "Debian" "Kano" "Mate" "PiTop" "Ubuntu" ) # list experimental os-releases

osdeny=( "Darwin" "Kali" ) # list os-releases specifically disallowed

FORCE=$1

DEVICE_TREE=true

ASK_TO_REBOOT=false

CURRENT_SETTING=false

UPDATE_DB=false

BOOTCMD=/boot/cmdline.txt

CONFIG=/boot/config.txt

APTSRC=/etc/apt/sources.list

INITABCONF=/etc/inittab

BLACKLIST=/etc/modprobe.d/raspi-blacklist.conf

LOADMOD=/etc/modules

DTBODIR=/boot/overlays

# function define

confirm() {

    if [ "$FORCE" == '-y' ]; then

        true

    else

        read -r -p "$1 [y/N] " response < /dev/tty

        if [[ $response =~ ^(yes|y|Y)$ ]]; then

            true

        else

            false

        fi

    fi

}

prompt() {

        read -r -p "$1 [y/N] " response < /dev/tty

        if [[ $response =~ ^(yes|y|Y)$ ]]; then

            true

        else

            false

        fi

}

success() {

    echo -e "$(tput setaf 2)$1$(tput sgr0)"

}

inform() {

    echo -e "$(tput setaf 6)$1$(tput sgr0)"

}

warning() {

    echo -e "$(tput setaf 1)$1$(tput sgr0)"

}

newline() {

    echo ""

}

progress() {

    count=0

    until [ $count -eq $1 ]; do

        echo -n "..." && sleep 1

        ((count++))

    done

    echo

}

sudocheck() {

    if [ $(id -u) -ne 0 ]; then

        echo -e "Install must be run as root. Try 'sudo ./$scriptname'\n"

        exit 1

    fi

}

sysclean() {

    sudo apt-get clean && sudo apt-get autoclean

    sudo apt-get -y autoremove &> /dev/null

}

sysupdate() {

    if ! $UPDATE_DB; then

        echo "Updating apt indexes..." && progress 3 &

        sudo apt-get update 1> /dev/null || { warning "Apt failed to update indexes!" && exit 1; }

        echo "Reading package lists..."

        progress 3 && UPDATE_DB=true

    fi

}

sysupgrade() {

    sudo apt-get upgrade

    sudo apt-get clean && sudo apt-get autoclean

    sudo apt-get -y autoremove &> /dev/null

}

sysreboot() {

    warning "Some changes made to your system require"

    warning "your computer to reboot to take effect."

    newline

    if prompt "Would you like to reboot now?"; then

        sync && sudo reboot

    fi

}

arch_check() {

    IS_ARMHF=false

    IS_ARMv6=false

    if uname -m | grep "armv.l" > /dev/null; then

        IS_ARMHF=true

        if uname -m | grep "armv6l" > /dev/null; then

            IS_ARMv6=true

        fi

    fi

}

os_check() {

    IS_RASPBIAN=false

    IS_MACOSX=false

    IS_SUPPORTED=false

    IS_EXPERIMENTAL=false

    if [ -f /etc/os-release ]; then

        if cat /etc/os-release | grep "Raspbian" > /dev/null; then

            IS_RASPBIAN=true && IS_SUPPORTED=true

        fi

        if command -v apt-get > /dev/null; then

            for os in ${osreleases[@]}; do

                if cat /etc/os-release | grep $os > /dev/null; then

                    IS_SUPPORTED=true && IS_EXPERIMENTAL=false

                fi

            done

            for os in ${oswarning[@]}; do

                if cat /etc/os-release | grep $os > /dev/null; then

                    IS_SUPPORTED=false && IS_EXPERIMENTAL=true

                fi

            done

            for os in ${osdeny[@]}; do

                if cat /etc/os-release | grep $os > /dev/null; then

                    IS_SUPPORTED=false && IS_EXPERIMENTAL=false

                fi

            done

        fi

    fi

    if [ -d ~/.kano-settings ] || [ -d ~/.kanoprofile ]; then

        IS_RASPBIAN=false

        for os in ${oswarning[@]}; do

            if [ $os == "Kano" ]; then

                IS_SUPPORTED=false && IS_EXPERIMENTAL=true

            fi

        done

        for os in ${osdeny[@]}; do

            if [ $os == "Kano" ]; then

                IS_SUPPORTED=false && IS_EXPERIMENTAL=false

            fi

        done

    fi

    if [ -f ~/.pt-dashboard-config ] || [ -d ~/.pt-dashboard ]; then

        IS_RASPBIAN=false

        for os in ${oswarning[@]}; do

            if [ $os == "PiTop" ]; then

                IS_SUPPORTED=false && IS_EXPERIMENTAL=true

            fi

        done

        for os in ${osdeny[@]}; do

            if [ $os == "PiTop" ]; then

                IS_SUPPORTED=false && IS_EXPERIMENTAL=false

            fi

        done

    fi

    if [ -d ~/.config/ubuntu-mate ]; then

        for os in ${osdeny[@]}; do

            if [ $os == "Mate" ]; then

                IS_SUPPORTED=false && IS_EXPERIMENTAL=false

            fi

        done

    fi

    if uname -s | grep "Darwin" > /dev/null; then

        IS_MACOSX=true

        for os in ${osdeny[@]}; do

            if [ $os == "Darwin" ]; then

                IS_SUPPORTED=false && IS_EXPERIMENTAL=false

            fi

        done

    fi

}

raspbian_check() {

    IS_SUPPORTED=false

    IS_EXPERIMENTAL=false

    if [ -f /etc/os-release ]; then

        if cat /etc/os-release | grep "/sid" > /dev/null; then

            IS_SUPPORTED=true && IS_EXPERIMENTAL=false

        elif cat /etc/os-release | grep "stretch" > /dev/null; then

            IS_SUPPORTED=true && IS_EXPERIMENTAL=false

        elif cat /etc/os-release | grep "jessie" > /dev/null; then

            IS_SUPPORTED=true && IS_EXPERIMENTAL=false

        elif cat /etc/os-release | grep "wheezy" > /dev/null; then

            IS_SUPPORTED=true && IS_EXPERIMENTAL=false

        else

            IS_SUPPORTED=true && IS_EXPERIMENTAL=false

        fi

    fi

}

: <<'MAINSTART'

Perform all global variables declarations as well as function definition

above this section for clarity, thanks!

MAINSTART

# checks and init

arch_check

os_check

if [ $debugmode != "no" ]; then

    echo "USER_HOME is $USER_HOME" && newline

    echo "IS_RASPBIAN is $IS_RASPBIAN"

    echo "IS_MACOSX is $IS_MACOSX"

    echo "IS_SUPPORTED is $IS_SUPPORTED"

    echo "IS_EXPERIMENTAL is $IS_EXPERIMENTAL"

    newline

fi

if ! $IS_ARMHF; then

    warning "This hardware is not supported, sorry!"

    warning "Config files have been left untouched"

    newline && exit 1

fi

if $IS_ARMv8 && [ $armv8 == "no" ]; then

    warning "Sorry, your CPU is not supported by this installer"

    newline && exit 1

elif $IS_ARMv7 && [ $armv7 == "no" ]; then

    warning "Sorry, your CPU is not supported by this installer"

    newline && exit 1

elif $IS_ARMv6 && [ $armv6 == "no" ]; then

    warning "Sorry, your CPU is not supported by this installer"

    newline && exit 1

fi

if [ $raspbianonly == "yes" ] && ! $IS_RASPBIAN;then

        warning "This script is intended for Raspbian on a Raspberry Pi!"

        newline && exit 1

fi

if $IS_RASPBIAN; then

    raspbian_check

    if ! $IS_SUPPORTED && ! $IS_EXPERIMENTAL; then

        newline && warning "--- Warning ---" && newline

        echo "The $productname installer"

        echo "does not work on this version of Raspbian."

        echo "Check https://github.com/$gitusername/$gitreponame"

        echo "for additional information and support"

        newline && exit 1

    fi

fi

if ! $IS_SUPPORTED && ! $IS_EXPERIMENTAL; then

        warning "Your operating system is not supported, sorry!"

        newline && exit 1

fi

if $IS_EXPERIMENTAL; then

    warning "Support for your operating system is experimental. Please visit"

    newline

fi

if [ $forcesudo == "yes" ]; then

    sudocheck

fi

newline

echo "This script will install everything needed to use"

echo "$productname"

newline

if confirm "Do you wish to continue?"; then

    newline

    echo "Checking hardware requirements..."

    if [ -e $CONFIG ] && grep -q "^device_tree=$" $CONFIG; then

        DEVICE_TREE=false

    fi

    if $DEVICE_TREE; then

        newline

        echo "Adding Device Tree Entry to $CONFIG"

        if [ -e $CONFIG ] && grep -q "^dtoverlay=hifiberry-dac$" $CONFIG; then

            echo "dtoverlay already active"

        else

            echo "dtoverlay=hifiberry-dac" | sudo tee -a $CONFIG

            ASK_TO_REBOOT=true

        fi

        if [ -e $BLACKLIST ]; then

            newline

            echo "Commenting out Blacklist entry in "

            echo "$BLACKLIST"

            sudo sed -i -e "s|^blacklist[[:space:]]*i2c-bcm2708.*|#blacklist i2c-bcm2708|" \

                        -e "s|^blacklist[[:space:]]*snd-soc-pcm512x.*|#blacklist snd-soc-pcm512x|" \

                        -e "s|^blacklist[[:space:]]*snd-soc-wm8804.*|#blacklist snd-soc-wm8804|" $BLACKLIST &> /dev/null

        fi

    else

        newline

        echo "No Device Tree Detected, not supported"

        newline

        exit 1

    fi

    if [ -e $CONFIG ] && grep -q -E "^dtparam=audio=on$" $CONFIG; then

        bcm2835off="no"

        newline

        echo "Disabling default sound driver"

        sudo sed -i "s|^dtparam=audio=on$|#dtparam=audio=on|" $CONFIG &> /dev/null

        if [ -e $LOADMOD ] && grep -q "^snd-bcm2835" $LOADMOD; then

            sudo sed -i "s|^snd-bcm2835|#snd-bcm2835|" $LOADMOD &> /dev/null

        fi

        ASK_TO_REBOOT=true

    elif [ -e $LOADMOD ] && grep -q "^snd-bcm2835" $LOADMOD; then

        bcm2835off="no"

        newline

        echo "Disabling default sound module"

        sudo sed -i "s|^snd-bcm2835|#snd-bcm2835|" $LOADMOD &> /dev/null

        ASK_TO_REBOOT=true

    else

        newline

        echo "Default sound driver currently not loaded"

        bcm2835off="yes"

    fi

    echo "Configuring sound output"

    if [ -e /etc/asound.conf ]; then

        if [ -e /etc/asound.conf.old ]; then

            sudo rm -f /etc/asound.conf.old

        fi

        sudo mv /etc/asound.conf /etc/asound.conf.old

    fi

    sudo echo -e "pcm.raspiaudio{\ntype softvol\n" > ~/asound.conf

    sudo echo -e "slave.pcm \042plughw:0\042\n " >> ~/asound.conf

    sudo echo -e "control.name \042Master\042\n " >> ~/asound.conf

    sudo echo -e "control.card 0 }" >>~/asound.conf

    sudo echo -e " pcm.!default { \n" >>~/asound.conf

    sudo echo -e "type plug \n" >>~/asound.conf

    sudo echo -e "slave.pcm  \042raspiaudio\042 \n}\n" >>~/asound.conf

    sudo mv ~/asound.conf /etc/asound.conf

    if [ $bcm2835off == "yes" ]; then

        newline

        echo "We can now test your $productname"

        warning "Set your speakers at a low volume!"

        if confirm "Do you wish to test your system now?"; then

            echo "Testing..."

            speaker-test -l5 -c2 -t wav

        fi

    fi

    newline && success "All done!" && newline

    echo "Enjoy your new $productname!" && newline

    if [ $promptreboot == "yes" ] || $ASK_TO_REBOOT; then

        sysreboot

    fi

else

    newline

    echo "Aborting..."

    newline

fi

exit 0

(18-02-21, 01:25)hdoa Wrote: [ -> ]As for the internet / external soundcard thing, I hope we can get that figured out soon.

I think Hans answered internet thing in your separate thread on this.

Thanks noek.
Ryan, I finally found some time to look at the installation script.
Conclusion: it might fail on samplerbox but no matter.....
...you don't need it, as the raspaudio+ is HifiBerry DAC compatible which comes with the image.
Only thing you have to do is adapt the /boot/config.txt, I've snipped the applicable part:

Code:
# for onboard, hdmi or usb dacs uncomment next parm:

dtparam=audio=on

#

# for hifiberry (compatible) dacs uncomment appropriate parm:

#dtoverlay=hifiberry-dac

#dtoverlay=hifiberry-dacplus

should be changed for disabling onboard and enabling the proper hifiberry compatible:

Code:
# for onboard, hdmi or usb dacs uncomment next parm:

#dtparam=audio=on

#

# for hifiberry (compatible) dacs uncomment appropriate parm:

dtoverlay=hifiberry-dac

#dtoverlay=hifiberry-dacplus

and reboot for testing....

Okay, so I accessed the SD card from my Linux machine.

I made the changes you listed in the configuration file. Commented out the "dtparam" one, and un-commented the "hifi" one.

I also used GParted to delete the old samples partition and create a new one with the correct settings described in the guide. However, I used FAT32 instead of EXT4 because I wanted to be able to access my samples folder in Windows.

I believe I set everything up correctly, but upon booting, I got the following errors:

Failed to start Update UTMP about System Boot/Shutdown
Failed to start Load/Save Random Seed
Failed to start Various fixups to make systemmd work better on Debian.
Failed to mount /samples
Failed to start Update UTMP about System Boot/Shutdown

When I try to run to run speaker-test, it says "Playback open error: -16,Device or resource busy"

When I try to play MIDI notes, naturally, nothing happens.

Really sad right now. I thought I was finally breaking ground, but now I feel even more lost than before. Really appreciate all the help and comments, you guys are great. I hope we can get this working.

Pages: 1 2

Ryan Steinbruner

hdoa

hansehv

hdoa

noek

hdoa

Ken

noek

hansehv

hdoa