20170719

My Bastl microGranny 2.5 kit arrived. The assembly looks very challenging.

I succeeded in installing Pure Data (Pd) on my RasPi 3 and I’ve been playing with Automatonism 1.1. It works great and even got my Novation Circuit to work with it! Automatonism is a virtual modular audio system. It’s the successor of XODULAR (both systems have been written by Johan Eriksson). Automatonism is a great way to learn both Pd and audio synthesis.

While fiddling with Pd I figured our that I can use it to write a midi CC modulator/translator which will change the CCs Novation Circuit sends over midi into CCs which the microGranny understands. The Circuit synths CC values can be automated using the inbuilt sequencer. The combination should make for very interesting results. Much like some Elektron sequencers with parameter locks. I guess I could run a Raspberry Pi Nano which only works as a Pd midi CC modulator/translator: ctlin (isolate CC) -> values -> ctlout (to desired CC). Or something.

I’ll try to learn Pd by making a midi clock input for Automatonism. Also discovered the Piz MIDI plugin collection which seems very useful. The plugins have been updated earlier this year. By the looks of it midiForceToKey can be used to make microtonal stuff.

20170713

A great resource for learning about granular synthesis.

    Also found Automatonism by Johan Eriksson a modular audio environment which works inside pd. Wonder if it can run on RasPi?

    Judging from Erikssons example it appears that nowadays electronic artist have make their own soft-/ hardware to market/facilitate/fund their creative careers. Mark Verbos in another excellent example (see his interview for details). Artists build their income by creating and sharing tools/instruments they use to make their art. This means that tools are currently more significant then artworks.

    20170607

    Maisie Williams in 2016.

    […] we should stop calling feminists ‘feminists’ and just start calling people who aren’t feminist ‘sexist’ – and then everyone else is just a human. You are either a normal person or a sexist

    Notes to self: Hammeradio operates with scheduled scripts. Access schedules with crontab -e, look for scripts in /home/pi/Desktop/. The entry @reboot /home/pi/Desktop/startupfm.sh launches sudo arecord -fS16_LE -r 22050 -Dplughw:1,0 -c 1 - | sudo /home/pi/PiFmRds/src/pi_fm_rds -audio - -rt Hammeradio & on startup. PiFmRds begins broadcasting at 107.9 MHz. The contab entry 0 */4 * * * /home/pi/Desktop/akustamatashutdown.sh waits for four hours before it runs the script (sudo shutdown). With top you can see active processes. PiFmRds shows ~24.5% CPU and arecord ~4.6%. vcgencmd measure_temp shows a steady 49.4°C temperature.

    20170522

    Making the “Hammeradio” launch FM broadcast by scheduling tasks with cron. @reboot /home/pi/Desktop/startupfm.sh works well. It launches sudo arecord -fS16_LE -r 22050 -Dplughw:1,0 -c 1 - | sudo /home/pi/PiFmRds/src/pi_fm_rds -audio - -rt Hammeradio & I’ll also schedule a daily power off cycle for the device. I’ll set it to work during gallery open hours 14:00 to 18:00 (with a Lunch break in the middle). Found an old amplifier circuit I build (while learning to solder to make the WSG) and I’ll test it with the piezo mic I have handy (It would save the iRig pre-amp I bought).

    20170519

    I got PiFmRds to work on my RasPi3.

    Note to self:

    1. Use Etcher to flash Raspbian.
    2. Enable ssh in RasPi using Terminal
    cd Volumes
    cd boot
    touch ssh

    3. Boot RasPi3, login via ssh
    4. Set new password
    passwd
    5. Set locale
    raspi-config
    6. Install sndfile library
    sudo apt-get install libsndfile1-dev
    7. Install PiFmRds
    git clone https://github.com/ChristopheJacquet/PiFmRds.git
    cd PiFmRds/src
    make clean
    make

    8. Broadcast from usb audio in at 107.9FM in mono 22050
    sudo arecord -fS16_LE -r 22050 -Dplughw:1,0 -c 1 - | sudo ./pi_fm_rds -audio - -rt Hammeradio
    9. End broadcast
    sudo pkill pi_fm_rds

    Fiddled with PiFmRds settings (I want it to display Hammeradio as radiotext (RT) but I’m not sure if it’s working). I also want to run a .sh script on boot to launch pi_fm_rds broadcast (aka. step 8). Currently launching the pi_fm_rds from /etc/rc.local. Tomorrow I’ll try to build a cron startup schedule so that I can spare the Hammeradio preamp from excess stress by powering the system down on gallery off hours (I have to use a preamp to connect a piezo mic to the RasPi). Other useful resources for future tightvnc manual.

    Installed Sea Change: In the Scale of a Horse (2017) by Otto Karvonen feat Trans-Horse installation at Vuotalo. The installation consists of a performance documentation, a custom horse blanket with an embroidery with the text “Helsingin kaupunki – Kaupunkimittausyksikkö” and horse-gear used by Toivottu Poika during our HKI-TKU-HKI riding trip in 2014.