WhisperOS is a user-friendly operating system designed for small, portable radio devices (like Heltec LoRa boards) that allow you to communicate without the internet or cellular networks. It creates a "mesh" network where devices talk directly to each other.
Think of it like a walkie-talkie for text messages that can also hop through other people's devices to reach further.
- Text Anyone: Send and receive text messages to other users on the network.
- Privacy: Your messages stay on the local mesh network, not on the internet.
- Contacts List: See who else is nearby or on the network. It shows you when they were "last seen" (e.g., "5m ago"), so you know if they are available.
- Smart Typing: Includes a virtual keyboard on the device itself with predictive text (English and Chinese input) to make typing easier on small screens.
- Multilingual Display: Supports CJK (Chinese, Japanese, Korean) and many other languages for message display.
- At a Glance: Quickly check your unread messages, battery life, and connection status (Bluetooth).
- Uptime: See how long your device has been running.
- Notifications: Choose how you want to be alerted—Beep (Buzzer), Flash (LED), or Vibrate. You can turn them all off for a "Do Not Disturb" mode.
- Display Settings: Adjust brightness or set "Always On" watch faces (like a binary clock or cute animal faces) if you want your device to double as a desk clock.
- Night Mode: Easily dim the screen or turn it off to save battery.
- Battery Info: Detailed battery voltage monitoring to help you manage power during long trips.
- Auto-Sleep: The device is smart about saving power when you aren't using it.
- Long Lasting: For Heltec V3 & V4, it could last 5 days.
- Radio Status: A specialized screen shows you the signal strength (RSSI) of the last message, with a visual graph (sparkline) to help you find the best spot for reception.
- Connection Options: Manage Bluetooth (to connect to your phone) and WiFi settings directly.
- Hikers & Campers: Communicate in areas with no cell service.
- Emergency Preppers: Reliable backup communication when towers are down.
- Tech Enthusiasts: Fun way to chat and experiment with radio tech.
- Groups/Events: Coordinate with friends at festivals or large events where networks are congested.
In essence, WhisperOS turns a simple radio board into a fully functional, standalone communicator that fits in your pocket.
Get the latest firmware at https://ssaprus.works.
| Device | Notes |
|---|---|
| Heltec V3, V4, T114 | Full support |
| GAT562 Mesh Watch | Full support |
| GAT562 Trial Tracker | Full support |
| Wio Tracker L1 | Full support |
| MeshTiny | Full support |
- Discord: https://discord.gg/73jThCU9cw
- Telegram: https://t.me/whisper_dev
- YouTube: https://www.youtube.com/@tsaokoming
- Testing firmware only: These builds are experimental—please test thoroughly before real-world use.
- Backup your data: Always back up configuration and messages before installing new firmware.
- No warranty: Provided as-is with no guarantees. Test in your intended environment.
- Use responsibly: Ensure compliance with local radio regulations. You are responsible for lawful use.