MeshCore Solo

Capabilities

Node roles

Features

• Extended Unicode support with Lemon font and native input
• GPS navigation suite (waypoints, compass, backtrack, trail recording)
• GPX export via USB serial
• Screenshot capture over USB
• Favourites dial for pinned contacts
• Message delivery status indicators
• DM auto-resend and incoming deduplication
• Screen lock with time and sensor display
• Auto-reply bot with command responses
• Auto-advert for location sharing
• Battery power saving (RX duty-cycle + APC)
• Companion repeater mode with diagnostics
• Ping functionality in Nearby Nodes
• SOS broadcast with configurable target
• Quiet hours for sound suppression
• Mark-all-read at type level
• Lock-screen unread count
• Channel scanner home page
• Contact distance sorting
• Signal stats screen
• Display test pattern
• Power profile presets
• Solo Tools web app for screenshot capture and GPX export (https://marekzegare4.github.io/Solo-tools/)

1. v1.19 # Latest 5 days ago · 2026-06-16 08:11 UTC

   View release ↗

   MeshCore Solo Companion Firmware v1.19

   What's new

   • Message delivery status — outgoing messages now show an end-to-end delivery marker, auto-scaled to the font (legible on landscape e-ink), in both the history list and the fullscreen view:
     • Direct messages (and room servers): pending → delivered (✓) → failed (✗), driven by the real end-to-end ACK. While pending, a row of dots shows one per send so auto-resend progress is visible.
     • Auto-resend — a pending DM whose ACK times out is re-sent automatically (reusing the original timestamp) until resends run out. Configurable count under Settings › Messages › Resend (0–5, default 2). Runs in the background, independent of which screen is open; incoming duplicates from retries are dropped.
     • Channels — ✓ appears only once a repeater echo confirms the message was relayed into the mesh. No echo is normal (flood has no recipient ACK), so no pending/fail is shown.
   • Auto-reply bot overhaul — the trigger/reply bot grows into a small auto-responder:
     • Query commands — a DM or monitored-channel message is scanned for ! tokens (!ping !batt !loc !time !temp !hops !status !help) and answered in one combined reply.
     • Away / reply-to-all — a lone * trigger replies to every message.
     • Separate DM and channel triggers, each with its own reply text.
     • Quiet hours — silence push replies during a chosen window (wraps midnight).
     • Throttling & anti-loop — per-contact DM throttle so one sender can't starve others; channel echo guard so the bot never answers itself; reply counter shown in the bot screen header.
   • Keyboard overhaul — one shared keyboard across all screens (reclaims duplicate RAM), icon keys (⇧ caps, ⎵ space, ⌫ delete, ✓ OK), and a second symbols page toggled with #@/abc.
   • UI refresh
     • Proportional scrollbar with up/down triangle caps replaces the old ^/v arrows, scaling with the font (1× OLED, 2× landscape e-ink); used by every scrollable list and the fullscreen message view. The redundant > selection marker is gone and rows shifted left to reclaim space.
     • Status-bar single-letter indicators (M/B/A/G) replaced with scalable mini-icons (mute, bluetooth, advert, trail).
   • Nearby Nodes reorganized — one list over two sources (stored contacts + live discover scan) with a unified detail/action menu. Type filter and sort are independent axes and persist across re-entry; the active filter is shown in the title and in empty-list messages.
   • Tools › Trail reorganized — a short two-level action menu (Hold Enter) replaces the flat ~12-item list; view-aware settings; a fitted square map grid; and the waypoint manager split out into its own component. No change to trail recording itself.
   • OTA updates — each solo release now ships a DFU .zip (solo-<ver>-<device>-ota.zip) for over-the-air / BLE-DFU updates, alongside the .uf2 for USB flashing.

   Fixes

   • GPS battery drain on shutdown — GPS is powered off before SYSTEMOFF, and uses the correct active-level (!PIN_GPS_EN_ACTIVE) instead of a hardcoded level.
   • Buzzer octave 8 — the RTTTL parser now fully accepts octave 8 instead of clamping it away (which could leak a digit into the next note's duration).
   • Trail file robustness — Waypoint/trail readers check every header read, so a truncated file is rejected instead of using a garbage count.

   Under the hood

   • OTA DFU zip is named and attached to releases by the _solo_dual build workflow; the per-build Actions artifact already carried it.
   • Large UI consolidation: shared drawList / header / key-decode helpers, deduplicated status-bar indicators, reusable scalable mini-icon facility (icons.h), and an audit-pass cleanup premoving dead code and redundant scroll-clamp logic.
2. v1.18 # 7 days ago · 2026-06-14 08:22 UTC

   View release ↗

   MeshCore Solo Companion Firmware v1.18

   New device support

   • GAT562 30S Mesh Kit — the firmware now supports the GAT562 30S alongside the Wio Tracker L1 family. Pre-built .uf2 files for all supported devices are published with each release — see the Supported Devices table.

   What's new

   • GAT562 30S Mesh Kit support — see above.
   • Battery saving (radio) — two new independent toggles under Settings › Radio:
     • Pwr save — hardware duty-cycle receive (SX126x SetRxDutyCycle): the radio cycles RX↔sleep autonomously and wakes on a preamble, cutting average RX current with only a small increase in receive latency
     • Auto pwr — Adaptive Power Control: trims TX power on strong links (based on ACK SNR) and ramps back up on weak or lost links; the home screen shows the live transmit power
   • BLE disconnect icon fix — the BLE status icon now updates immediately when the connection drops (e.g. out of range, supervision timeout). Previously it could stay active until the next UI polling cycle.
   • Bot trigger preserves case — the auto-reply trigger phrase is now stored exactly as typed. Matching remains case-insensitive, so Ping, ping and PING all trigger the bot, but the trigger no longer gets silently lowercased when saved.
   • Screenshot support in all solo builds — ENABLE_SCREENSHOT is now enabled in every solo firmware build. No need to use a separate _dev environment. Use the Solo Tools web app to capture screenshots directly from the browser.

   Under the hood

   • CI matrix for solo firmware builds is now fully dynamic — new devices are picked up automatically from platformio.ini based on the _solo_dual env suffix, no workflow changes required.
   • AbstractUITask::onBLEDisconnected() virtual hook added — called by setHasConnection() on transition to disconnected; UITask overrides it to set _next_refresh = 0.
   • build.sh gains build-solo-firmwares command, backed by build_all_firmwares_by_suffix "_solo_dual".
3. v1.17 # 12 days ago · 2026-06-09 15:33 UTC

   View release ↗

   Wio Tracker L1 — Solo Firmware v1.17

   What's new

   • Nearby Nodes — navigate & save waypoints from the list — the context menu now exposes Navigate and Save waypoint directly from the Nearby list and detail view, so you no longer have to open the separate Tools → Waypoints screen. Long-press Options in the detail view also opens a Ping submenu.
   • Nearby Nodes — TIME sort filter — a new [TIME] filter sorts contacts by last-seen time (most recent first) instead of distance, useful when GPS is unavailable.
   • Battery indicator calibrated — the 100 % ceiling of the LiPo discharge curve was corrected from 4200 mV to 4170 mV, matching what the board's charger actually delivers.
   • Advert sound scope control — a new Sound → Advert setting lets you choose whether advert notifications play for all nodes or only direct (zero-hop) neighbours, cutting noise on busy meshes.
   • Sound slot "None" option — DM, channel and advert melody slots can now be set to None to silence that notification category entirely without muting everything.
   • Mark-as-read feedback — marking messages read (per-contact or per-channel) now shows a brief "N marked read" confirmation on screen.
   • [Web tool] GPX Downloader — a standalone web page for downloading saved GPX trails from the device over the browser's Web Serial API, no desktop app required.

   Under the hood

   • SoundNotifier extracted from UITask::notify() — all buzzer/melody logic lives in one place, reducing future merge conflict surface with upstream.
   • KeyboardWidget is now a single shared instance across screens (saves ~1.5 KB heap).
   • onDiscoveredAdvert extracted as a separate virtual so upstream onDiscoveredContact keeps its original 4-parameter signature.