MeshCore Signal Tester

Releases

• Nov 10, 2026 1.3.3
  ### Added - **Radio tools for companion radios**: read and set the **TX power**; **Trace** a path of repeater IDs — a single ID is a round trip to that neighbour showing how well it hears you and you hear it, a path such as `5E,8A,5E` shows the SNR of every hop (1-, 2- and 4-byte IDs); switch the **RX gain** — the radio chip's boosted gain and, on boards that have one, the external LNA (firmware v1.18.0+; boosted gain left off is flagged, as it lowers the RSSI/SNR you measure); and **restart** the device, after which the app reconnects by itself without the disconnect alarm. On firmware

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  v1.18+ the restart uses the CLI `reboot`, which avoids a rare wipe of the node's settings and key seen on nRF52 boards (T1000-E) with the classic reboot command; on older firmware the confirmation recommends a backup. ([#20](https://github.com/kybl/meshcore-signal-tester/issues/20)) - **Device console**: type CLI commands and see the replies — for a **repeater** over USB, and for a **companion** with firmware v1.18.0 or newer. Commands that would stop the capture, or restart or erase the device, ask for confirmation first; a repeater can also be restarted with a button. ([#20](https://github.com/kybl/meshcore-signal-tester/issues/20)) - The companion's **firmware and protocol version** are shown next to the device name, in amber when the firmware is too old for some Radio tools (which then says what needs a newer firmware). ### Fixed - **Android: CSV export no longer produces an empty (0-byte) file**, and a **CSV import no longer silently does nothing**, when the system closes the app in the background while its file dialog is open — common on Xiaomi phones. Before, only small exports survived this. - **Packet sounds no longer go silent for good after a while.** Android can leave the audio engine stuck (after the phone dozed or the audio output changed); every later beep — and the disconnect alarm — was then dropped until the app was restarted. - **A packet filter that matches nothing no longer hides itself**: the filter field disappeared together with the empty table, so it couldn't be fixed or cleared without restarting the app. It now says that nothing matches. ([#21](https://github.com/kybl/meshcore-signal-tester/issues/21)) - Trace results with 2- or 4-byte repeater IDs (firmware v1.11+) were misread and dropped. - Export CSV is disabled while an import is running, and Import CSV while an export is being prepared. - **Resuming a saved session no longer deletes its data** when Auto-remove is set to a finite time (it switches to "Never", as an import does), and other saved sessions are kept and offered later instead of being deleted unseen. - **Storage full no longer loses data**: the packets that couldn't be written are retried, and room is made by removing the oldest quarter of the history instead of everything older than an hour. - **Android: cancelling the Export dialog keeps the "unsaved packets" warning.** - **Auto-reconnect no longer shows a blocking error dialog** on each attempt when a USB/WiFi device doesn't answer yet (e.g. still starting after a restart). - **A WiFi link to a radio that disappeared is noticed within about 1.5 minutes** (was about 15 minutes), so the alarm / auto-reconnect kick in. - **Connecting**: Cancel while a USB/WiFi port is opening works; a cancelled Bluetooth attempt can no longer take over a newer connection; a failed Bluetooth setup releases the radio (it stayed invisible); a Bluetooth device without the MeshCore service says so; Bluetooth coming back on or returning to the app retries a running reconnect immediately; Android cleans up its connections after a WebView crash. - **Charts**: time labels sit on local hours and midnight (they followed UTC), long captures get day/week labels instead of overlapping ones, the Y-axis gridlines land on round values, the SNR axis fits only the series shown, zoom gestures and clicks hit exactly what is drawn, and Clear data / a new import reset the zoom. - **CSV**: a trace's per-hop SNRs are kept (new `hop_snr` column, older files still import), trailing spaces in the last field survive, and nonsense coordinates no longer break the 3D map. - Smaller fixes: table header dots follow a theme switch; a detail row opened right after closing another no longer vanishes; the tables no longer rebuild every 2 s (which cleared text selection); one chart point could go missing when a packet triggered a chart rebuild; sent SNR was recorded while stopped.