A daemon to fetch images from a Tronbyt server and display on a matrix LED display connected to a Raspberry Pi.

It has only been tested with a Raspberry Pi Zero 2W, but should work with all devices supported by https://github.com/hzeller/rpi-rgb-led-matrix.

In order to avoid flickering, follow these steps (taken from https://github.com/hzeller/rpi-rgb-led-matrix?tab=readme-ov-file#troubleshooting):

• Set dtparam=audio=off in /boot/firmware/config.txt (disables audio)
• Set dtoverlay=disable-bt in /boot/firmware/config.txt (disables bluetooth)
• Add isolcpus=3 at the end of /boot/firmware/cmdline.txt
• Run

cat <<EOF | sudo tee /etc/modprobe.d/blacklist-rgb-matrix.conf
blacklist snd_bcm2835
EOF
sudo update-initramfs -u

• Reboot

Now download either the latest binary release from https://github.com/tronbyt/tronberry/releases onto your Pi or build the Tronbyt client yourself on the device:

# Install dependencies
sudo apt-get update
sudo apt-get -y install git libwebp-dev libssl-dev zlib1g-dev

# Clone repository
git clone --recurse-submodules https://github.com/tronbyt/tronberry.git

# Build
cd tronberry
make

Compilation on the device is slow, so you may consider cross-compiling the binary on a more powerful machine using docker build -f Dockerfile.cross --output . ..

# The Tronbyt URL looks like http(s)://…/next or ws(s)://…/ws
sudo ./tronberry ${TRONBYT_URL}

If you use tronberry with the original Tidbyt display, add the --led-panel-type=FM6126A flag. For a list of available options, run ./tronberry --help, there are many knobs to tweak.

To start tronberry at startup, create /etc/systemd/system/tronberry.service with the following content:

[Unit]
Description=Tronberry
After=network-online.target

[Service]
ExecStart=<ABSOLUTE_PATH_TO_TRONBERRY> <TRONBYT_URL>
Restart=always

[Install]
WantedBy=multi-user.target

Then run sudo systemctl enable tronberry to enable the new service.

To start it manually, run sudo systemctl start tronberry.

You may want to configure your Pi to automatically reconnect to the WiFi in case the connection is interrupted, so that it'll display fresh images as soon as the WiFi becomes available again:

sudo nmcli connection modify "{YOUR_WIFI_SSID}" connection.autoconnect-retries 0