Capabilities

Node roles

Features

• Automatic GPS advertising (zero-hop, every 5 minutes)
• Dedicated tracking page with Haversine distance calculation
• Off-Grid mode with Client Repeat on separate legal frequencies
• One-press Off-Grid toggle (menu or 5x button press on headless devices)
• SOS system with two-step confirmation and buzzer alarm
• Message history (RAM ring buffer, up to 32 entries)
• Text input and send via joystick (Wio Tracker L1)
• Online node counter on home screen
• Mode indicators (GPS-SHARE, OFF-GRID)
• Headless device support (T1000-E, RAK WiseMesh TAG)
• Forced buzzer feedback for all actions on headless devices
• Splash screen with version info and FieldMesh branding
• Backlight fixes for various displays

1. v5.3 # Latest 2 months ago · 2026-04-28 07:00 UTC

   View release ↗

   [5.3] — MeshCore Upstream Sync

   Changes

   • MeshCore upstream alignment — codebase updated to track MeshCore v1.15.0; no FieldMesh-specific feature changes in this release

   Download latest build

   EU Offgrid frequency

   ThinkNode_M1_companion_radio_ble_FieldMeshv5.3.zip WioTrackerL1_companion_radio_ble_FieldMeshv5.3.zip t1000e_companion_radio_ble_FieldMeshv5.3.zip

   US Offgrid frequency

   ThinkNode_M1_companion_radio_ble_USFieldMeshv5.3.zip WioTrackerL1_companion_radio_ble_USFieldMeshv5.3.zip t1000e_companion_radio_ble_USFieldMeshv5.3.zip

2. v5.2 # 2 months ago · 2026-04-09 14:29 UTC

   View release ↗

   [5.2] — HomeScreen Redesign & Online Node Counter

   New features

   • Online node counter — HomeScreen now shows how many nodes have been heard in the last 30 minutes, combining advert senders and message senders in a single deduplicated count (16-entry LRU cache)
   • Node counter icon — the online count is displayed with a filled circle icon (●) instead of plain [X] text
   • Real channel name in title bar — message history and favorite preview now show the actual channel name (e.g. "Public") instead of the hardcoded "[CH]" tag
   • Mode indicator — GPS-SHARE and OFF-GRID modes are now shown on the HomeScreen FIRST page

   Changes

   • M1 HomeScreen layout — node counter fixed at y=22 regardless of connection state; MSG:X replaces < Connected > when disconnected; nodes_icon y-offset corrected (+3px) to align with text baseline
   • Channel message title bar — sender name omitted from title bar for channel messages (already visible inside the message text)
   • Favorite indicator — clears correctly after all messages are deleted (deleteEntry / clearAll); no longer persists stale data after app sync
   • MSG:X counter — hidden on HomeScreen while phone app is connected
   • RECENT/TRACKING pages — row limits now display-height-adaptive via max_y variable instead of hardcoded values

   Bug fixes

   • BLE init: send_queue flood — between onSecured() and CMD_APP_START async pushes could fill all 12 send_queue slots, causing the app to time out. Fixed via _app_initialized flag and isWriteBusy() guard
   • Double-counting in node counter — nodes heard via both advert and message were counted twice. Fixed via countOnlineNodesExcluding()
   • adv_fresh buffer — was reusing the 4-entry RECENT display array, capping the advert-based node count at 4. Now uses a dedicated ADVERT_PATH_TABLE_SIZE (16) buffer
   • formatRelTime undefined behavior — replaced signed int cast with safe uint32_t arithmetic

   Technical notes

   • Changes confined to UITask.cpp, UITask.h, MyMesh.cpp, MyMesh.h, icons.h
   • DataStore, AbstractUITask, platformio.ini unaffected

   Download latest build

   EU Offgrid frequency

   ThinkNode_M1_companion_radio_ble_FieldMeshv5.2.zip WioTrackerL1_companion_radio_ble_FieldMeshv5.2.zip t1000e_companion_radio_ble_FieldMeshv5.2.zip

   US Offgrid frequency

   ThinkNode_M1_companion_radio_ble_USFieldMeshv5.2.zip WioTrackerL1_companion_radio_ble_USFieldMeshv5.2.zip t1000e_companion_radio_ble_USFieldMeshv5.2.zip

3. v5.1 # 3 months ago · 2026-04-04 08:18 UTC

   View release ↗

   [5.1] — Headless Device Support (T1000-E, RAK WiseMesh TAG)

   New features

   • Headless device support — ui-orig now fully integrated into FieldMesh; devices with no display and a single button (Seeed T1000-E, RAK WiseMesh TAG) are supported as first-class citizens
   • Off-Grid toggle via 5× click — 5 presses on the single button toggles Off-Grid mode on/off; buzzer feedback is forced regardless of mute state (ascending tone = on, descending = off)
   • SOS alarm via buzzer — incoming !SOS messages trigger a continuous buzzer siren that overrides quiet mode and loops until acknowledged with a short press

   Changes

   • All button actions (advert, GPS toggle, buzzer toggle, Off-Grid toggle) now produce forced buzzer feedback regardless of quiet mode — essential for display-less operation
   • Ascending tone (c,e) = feature enabled; descending tone (e,c) = feature disabled — consistent across all actions
   • newMsg() signature updated to include is_favorite parameter — compatible with V5 AbstractUITask interface
   • refreshDisplay() and isOnRecentOrTrackingPage() added as explicit no-op overrides — required for MyMesh compatibility

   Button mapping (headless devices — single button)

   Press	Action
   1×	Wake display / acknowledge SOS alarm
   2×	Send advert
   3×	Buzzer mute on/off
   4×	GPS on/off
   5×	Off-Grid mode on/off
   Long press (first 8 s)	CLI Rescue Mode
   Long press	Shutdown

   Technical notes

   • Changes confined to ui-orig/Button.h, ui-orig/Button.cpp, ui-orig/UITask.h, ui-orig/UITask.cpp
   • ui-new (ThinkNode M1, Wio Tracker L1) is completely unaffected
   • _buzzer_restore_quiet flag ensures non-blocking buzzer playback before quiet state is restored

   Download latest build

   EU Offgrid frequency

   ThinkNode_M1_companion_radio_ble_FieldMeshv5.1.zip WioTrackerL1_companion_radio_ble_FieldMeshv5.1.zip t1000e_companion_radio_ble_FieldMeshv5.1.zip

   US Offgrid frequency

   ThinkNode_M1_companion_radio_ble_USFieldMeshv5.1.zip WioTrackerL1_companion_radio_ble_USFieldMeshv5.1.zip t1000e_companion_radio_ble_USFieldMeshv5.1.zip