Added HOWTO.md
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HOWTO.md
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HOWTO.md
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# Setup Pizzabox
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## Materials:
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- Raspberry Pi 3B+ with [Pimoroni On/Off SHIM](https://shop.pimoroni.com/products/onoff-shim)
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- Raspberry Pi OS Lite 2021-05-07
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- *(later)* Raspberry Pi Pico, connected via UART and power
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- USB Soundcard
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## Resources:
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- [official raspberry pi](https://www.raspberrypi.org/documentation/usage/gpio/)
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- [interactive pinout documentation](https://pinout.xyz/pinout/onoff_shim#)
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## Initial Configuration:
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### Before First Boot
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- Enable ssh:
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cd <media/user>/boot
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touch ssh
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- Set fixed fallback ip on eth0:
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cd <media/user>/rootfs/etc
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sudo nano dhcpcd.conf
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Uncomment the following lines:
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profile static_eth0
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static ip_address=10.10.0.23/24
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interface eth0
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fallback static_eth0
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### First Boot
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- Hook up pi to configuration system via ethernet, screen is optional. Insert SD-card, plug in OnOff SHIM
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- Connect via ssh:
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ssh pi@10.10.0.23
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- Use raspi-config tool to
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* *(optional)* set up WiFi and connect (for updates, ...)
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* enable camera
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* enable serial
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* change password to `pizzabox`
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Apply changes and reboot.
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### Install Software
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- Update system
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sudo apt update
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sudo apt full-upgrade
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- Install python libraries:
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sudo apt install git python3-picamera python3-gpiozero python3-pip python3-setuptools python3-serial
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- Update NumPy:
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pip3 install numpy --upgrade
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To fix bug with NumPy dependencies on Raspberry Pi install libatlas [source](https://numpy.org/devdocs/user/troubleshooting-importerror.html):
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sudo apt-get install libatlas-base-dev
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- Install dependencies for python `sounddevice` library:
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sudo apt install libportaudio2
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- Install `gpac` for the video convertion tool *MP4Box*:
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sudo apt install gpac
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- Install `pydub` python library for mp3 support:
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pip3 install pydub
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### Install Soundcard and Make Default
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- Set external soundcard as default [how-to](https://www.raspberrypi-spy.co.uk/2019/06/using-a-usb-audio-device-with-the-raspberry-pi/)
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- When hotplugged, the sound card may not be activated. If true, reboot.
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- To see if the sound card was registered, run
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aplay -l
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Produces output similar to
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**** List of PLAYBACK Hardware Devices ****
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card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1]
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Subdevices: 4/4
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Subdevice #0: subdevice #0
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Subdevice #1: subdevice #1
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Subdevice #2: subdevice #2
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Subdevice #3: subdevice #3
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card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
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Subdevices: 4/4
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Subdevice #0: subdevice #0
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Subdevice #1: subdevice #1
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Subdevice #2: subdevice #2
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Subdevice #3: subdevice #3
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card 2: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
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Subdevices: 1/1
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Subdevice #0: subdevice #0
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`card 2` is the usb sound card.
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- Edit the file `/usr/share/alsa/alsa.conf`:
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Change the following lines (change the `0` to `2`)
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defaults.ctl.card 2
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defaults.pcm.card 2
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- Test the speakers:
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speaker-test -c2
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Should play white noise on the left and right channel.
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- Test the mic:
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arecord -d 10 -f cd -t wav test.wav
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aplay test.wav
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- To set gain levels etc. run:
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alsamixer
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## Set Up Camera
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- Plug in camera with ribbon cable (requires reboot)
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- Test camera (with screen plugged in):
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raspistill -t 1 -o test.jpg
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Download test.jpg using sftp.
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## Set Up OnOff Shim:
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- Use the one-line installer:
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curl https://get.pimoroni.com/onoffshim | bash
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## Python Development on Raspi (pizzabox-main)
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- clone github repository `https://git.theater.digital/johannes.payr/pizzabox-main.git`
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- *(For now)* Use Pycharm. Set up remote python interpreter on raspberry pi:
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SSH Server: 10.10.0.23
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User Name: pi
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Path: /usr/bin/python3
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- install missing packages: `'click', 'sounddevice', 'soundfile', 'scipy'`
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