Using dtcooper/rpi-image-modifier, we download a raspios_lite_arm64 image and modify it to install OVOS on top. The customized images are then uploaded to GitHub Releases. 🎉
- Default user:
ovos - Default password:
ovos - Default hostname:
raspOVOS - OVOS services run under the
ovosuser, with autologin enabled.
Check out the Getting Started Guide for instructions.
The image versions below are considered the latest stable versions
- raspOVOS-english-bookworm-arm64-lite-2025-01-15
- raspOVOS-dutch-bookworm-arm64-lite-2025-01-15
- raspOVOS-catalan-bookworm-arm64-lite-2025-01-15
- raspOVOS-german-bookworm-arm64-lite-2025-01-15
- raspOVOS-spanish-bookworm-arm64-lite-2025-01-15
- raspOVOS-portuguese-bookworm-arm64-lite-2025-01-15
- raspOVOS-galician-bookworm-arm64-lite-2025-01-15
Are you a developer?
Find the latest developer builds on the Releases page.
⚠️ These builds are semi-automated and might not be well tested in comparison to the versions listed above
- 🌟 Best: Fully offline (STT, TTS, wake words).
- ✅ Good: Online STT + Offline TTS.
- ⚡ Usable: Online STT + Online TTS.
- 🛠️ Work in Progress: Missing key functionality or early-stage development.
| Language | STT | TTS | Wake Word | "Wake Up" Hotword | Notes | Rating |
|---|---|---|---|---|---|---|
| English | ovos-stt-plugin-serverWhisper Turbo public servers |
ovos-tts-plugin-pipervoice-en-gb-alan-low |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"wake up" |
- STT relies on public servers | ✅ Good |
| Catalan | ovos-stt-plugin-citrinetAINA Citrinet model |
ovos-tts-plugin-matxaMatxaTTS |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"desperta" |
- Fully offline; supports Catalan-specific models for STT and TTS. - 🚧 Skills translation is a work in progress |
🌟 Best |
| Portuguese | ovos-stt-plugin-serverMyNorthAI public servers |
ovos-tts-plugin-edge-ttspt-PT-DuarteNeural |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"acorda" |
- STT relies on public servers - Edge TTS is temporary (not privacy respecting). - 🚧 Skills translation is a work in progress |
🛠️ Work in Progress |
| Spanish | ovos-stt-plugin-citrinetNVIDIA Citrinet model |
ovos-tts-plugin-ahottsspanish |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"desperta" |
- 🚧 Skills translation is a work in progress | ✅ Good |
| Galician | ovos-stt-plugin-serverWhisper Turbo public servers |
ovos-tts-plugin-serverNOS TTS public servers |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"acorda" |
- STT and TTS rely on public servers - NOS TTS planned for local use once ONNX support is available. - - - 🚧 Skills translation is a work in progress |
🛠️ Work in Progress |
| Basque | ovos-stt-plugin-serverWhisper Turbo public servers |
ovos-tts-plugin-ahottsbasque |
ovos-ww-plugin-precise-lite"hey mycroft" |
❌ | - STT relies on public servers - HiTz STT remote servers support planned - "wake up" does not have dedicated basque vosk model - - 🚧 Skills translation is a work in progress |
🛠️ Work in Progress |
| Dutch | ovos-stt-plugin-citrinetNemo Citrinet model |
ovos-tts-plugin-pipermls_5809-low |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"wakker worden" |
- 🚧 Skills translation is a work in progress | 🌟 Best |
| German | ovos-stt-plugin-citrinetNemo Citrinet model |
ovos-tts-plugin-piperthorsten-low |
ovos-ww-plugin-precise-lite"hey mycroft" |
ovos-ww-plugin-vosk"aufwachen" |
- Citrinet is not very good - 🚧 Skills translation is a work in progress |
⚡ Usable |
Here is an overview of non-OVOS specific changes to the base raspios-lite image
| Change | Description | Benefit for Hardware Performance |
|---|---|---|
| Base raspiOS image runing | Reduces GPU memory, enables i2c/spi, enables autologin, change user name... | optimizes the base system to run OVOS |
| Install Pipewire | Installs PipeWire for sound server management, configures user permissions for audio groups, and sets up .asoundrc for default audio handling. |
Provides a low-latency audio server for audio management, ensuring smooth and high-quality sound handling. |
| Install KDEConnect | Installs KDEConnect to enable integration with your phone | Easy file and clipboard sharing |
| Tune fstab | Updates /etc/fstab to include noatime and nodiratime options, reducing disk I/O by not updating access times on reads. |
Reduces unnecessary disk operations, leading to faster system performance and reduced wear on SD cards. |
| Passwordless nmcli | Configures NetworkManager settings to disable Wi-Fi power-saving and grants the "network" group permission to change settings. | Ensures consistent network connectivity and performance, avoiding interruptions or delays that may affect latency. |
| Tune sysctl | Configures kernel tuning parameters for improved network and memory performance, optimizing system responsiveness for real-time tasks. | Improves network and memory performance: Faster network response, better memory management for smoother operation. |
- net.ipv4.tcp_slow_start_after_idle=0: Disables slow start for idle TCP connections. |
Reduces latency when establishing new connections, enhancing real-time communication | |
- net.ipv4.tcp_tw_reuse=1: Enables reuse of TIME_WAIT sockets. |
Reduces time delays for connections by allowing reuse of sockets, benefiting long-running services | |
- net.core.netdev_max_backlog=50000: Increases the maximum number of packets that can be queued for processing. |
Improves network packet processing, reducing latency during high network activity. | |
- net.ipv4.tcp_max_syn_backlog=30000: Increases the maximum backlog of pending TCP connections. |
Ensures the system can handle more incoming TCP connections, improving network stability for real-time tasks. | |
- net.ipv4.tcp_max_tw_buckets=2000000: Increases the maximum number of TCP connections in TIME_WAIT state. |
Helps manage a higher number of concurrent connections, reducing connection delays in a busy network environment. | |
- net.core.rmem_max=16777216, net.core.wmem_max=16777216: Increases maximum buffer sizes for receiving and sending data. |
Optimizes network throughput by allocating more memory for buffer handling. | |
- net.core.rmem_default=16777216, net.core.wmem_default=16777216: Sets default buffer sizes for receiving and sending data. |
Ensures better performance in network communication, reducing potential lag. | |
- net.ipv4.tcp_rmem="4096 87380 16777216", net.ipv4.tcp_wmem="4096 65536 16777216": Configures TCP buffer sizes for receiving and sending data. |
Fine-tunes the memory allocation for TCP, enhancing network efficiency. | |
- net.core.optmem_max=40960: Sets maximum size for socket options memory. |
Reduces delays in setting socket options, improving responsiveness for real-time communication. | |
- fs.inotify.max_user_instances=8192, fs.inotify.max_user_watches=524288: Increases the number of file system watches. |
Optimizes system performance by allowing more file monitoring, which can benefit real-time data processing tasks. | |
| udev rules | Configures udev rules for setting I/O scheduler for MMC and USB devices to "none", minimizing latency for disk and removable storage. | This can reduce latency and improve performance for flash-based storage like MMC and USB devices. Flash storage does not require complex scheduling algorithms because it has no moving parts (like hard drives), so a simpler, more direct I/O approach is more efficient. |
| Disable Wi-Fi power-saving | Copies the wlan0-power.service systemd service file to /etc/systemd/system/ and enables it to manage Wi-Fi power consumption. |
Reduces power consumption by disabling Wi-Fi power-saving features, which is important for maintaining stable network performance. |
| Setup ZRAM | Installs and configures ZRAM to create compressed swap space in RAM, improving system performance by reducing disk swap usage. | Enhances system performance by reducing reliance on slower disk-based swap and utilizing faster RAM for swap, which is especially useful on limited-resource devices like Raspberry Pi. |
vm.swappiness=100 |
Increases the system's tendency to use swap space (even if there is available RAM), which helps with memory management and reduces disk I/O. | |
vm.page-cluster=0 |
Lowers the number of pages to swap at once, making memory swapping more granular and efficient in cases of memory pressure. | |
vm.vfs_cache_pressure=500 |
Reduces pressure on the VFS cache, ensuring more data stays in memory for faster file access, which is important for real-time applications. | |
vm.dirty_background_ratio=1 |
Reduces the amount of memory that can be used before data is written to disk, ensuring data is written more frequently and preventing memory overload. | |
vm.dirty_ratio=50 |
Controls the threshold at which dirty pages (pages that need to be written to disk) trigger writes. A higher value means more data is kept in memory before writing to disk. |
- build_base.sh
- Tunes the base system (see below).
- Installs
pipewire. - Changes user, enables SSH, and more.
- build_raspOVOS.sh
Installs OVOS on the base system, including the"hey mycroft"wake word. - 🚧 build_raspOVOS_gui.sh 🚧
Installs the OVOS GUI on top of the base system. (work in progress)
- build_raspOVOS_en.sh
Configures OVOS to English, installs the Vosk English model ("wake up"wake word), and adds PiperTTS (voice-en-gb-alan-low). - build_raspOVOS_ca.sh
Configures OVOS to Catalan, downloads AINA citrinet STT model, and installs MatxaTTS. - 🚧 build_raspOVOS_pt.sh
Configures OVOS to Portuguese, adds the Vosk Portuguese model ("acorda"wake word), sets STT to MyNorthAI public servers, and adds PiperTTS (tugao-medium). - 🚧 build_raspOVOS_es.sh
Configures OVOS to Spanish, adds the Vosk Spanish model ("desperta"wake word), and installs AhoTTS. - 🚧 build_raspOVOS_gl.sh
Configures OVOS to Galician, adds the Vosk Portuguese model ("desperta"wake word) and configures TTS to use NOS TTS Public servers. - 🚧 build_raspOVOS_eu.sh
Configures OVOS to Basque and installs AhoTTS.
- 🎨 Custom Builds: Create your own language or feature-specific builds by extending the scripts!
- 🔗 Contribute: Found a bug or have an idea? Open an issue or submit a PR!
- 💬 Community: Join us on Matrix to discuss and get support.
