mirror of
https://github.com/meshcore-dev/MeshCore.git
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ripplebiz
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docs/faq.md
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docs/faq.md
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**MeshCore-FAQ**<!-- omit from toc -->
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A list of frequently-asked questions and answers for MeshCore
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The current version of this MeshCore FAQ is at https://github.com/meshcore-dev/MeshCore/blob/main/docs/faq.md.
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This MeshCore FAQ is also mirrored at https://github.com/LitBomb/MeshCore-FAQ and might have newer updates if pull requests on Scott's MeshCore repo are not approved yet.
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author: https://github.com/LitBomb<!-- omit from toc -->
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---
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- [1. Introduction](#1-introduction)
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@@ -22,6 +26,10 @@ A list of frequently-asked questions and answers for MeshCore
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- [3.2. Q: Do I need to set the location for a repeater?](#32-q-do-i-need-to-set-the-location-for-a-repeater)
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- [3.3. Q: What is the password to administer a repeater or a room server?](#33-q-what-is-the-password-to-administer-a-repeater-or-a-room-server)
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- [3.4. Q: What is the password to join a room server?](#34-q-what-is-the-password-to-join-a-room-server)
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- [3.5. Q: Can I retrieve a repeater's private key or set a repeater's private key?](#35-q-can-i-retrieve-a-repeaters-private-key-or-set-a-repeaters-private-key)
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- [3.6. Q: The first byte of my repeater's public key collides with an exisitng repeater on the mesh. How do I get a new private key with a matching public key that has its first byte of my choosing?](#36-q-the-first-byte-of-my-repeaters-public-key-collides-with-an-exisitng-repeater-on-the-mesh--how-do-i-get-a-new-private-key-with-a-matching-public-key-that-has-its-first-byte-of-my-choosing)
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- [3.7. Q: My repeater maybe suffering from deafness due to high power interference near my mesh's frequency, it is not hearing other in-range MeshCore radios. what can I do?](#37-q-my-repeater-maybe-suffering-from-deafness-due-to-high-power-interference-near-my-meshs-frequency-it-is-not-hearing-other-in-range-meshcore-radios--what-can-i-do)
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- [3.8 Q: How do I make my repeater an observer on the mesh](#38-q-how-do-i-make-my-repeater-an-observer-on-the-mesh)
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- [4. T-Deck Related](#4-t-deck-related)
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- [4.1. Q: Is there a user guide for T-Deck, T-Pager, T-Watch, or T-Display Pro?](#41-q-is-there-a-user-guide-for-t-deck-t-pager-t-watch-or-t-display-pro)
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- [4.2. Q: What are the steps to get a T-Deck into DFU (Device Firmware Update) mode?](#42-q-what-are-the-steps-to-get-a-t-deck-into-dfu-device-firmware-update-mode)
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- [5.14.4. meshcore-cli](#5144-meshcore-cli)
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- [5.14.5. meshcore.js](#5145-meshcorejs)
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- [5.14.6. pyMC\_core](#5146-pymc_core)
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- [5.14.7. MeshCore Packet Decoder](#5147-meshcore-packet-decoder)
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- [5.15. Q: Are there client applications for Windows or Mac?](#515-q-are-there-clientt-applications-for-windows-or-mac)
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- [5.16. Q: Are there any resources that compare MeshCore to other LoRa systems?](#516-q-are-there-any-document-that-compares-meshcore-with-other-lora-systems)
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- [6. Troubleshooting](#6-troubleshooting)
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- [6.1. Q: My client says another client or a repeater or a room server was last seen many, many days ago.](#61-q-my-client-says-another-client-or-a-repeater-or-a-room-server-was-last-seen-many-many-days-ago)
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- [6.2. Q: A repeater or a client or a room server I expect to see on my discover list (on T-Deck) or contact list (on a smart device client) are not listed.](#62-q-a-repeater-or-a-client-or-a-room-server-i-expect-to-see-on-my-discover-list-on-t-deck-or-contact-list-on-a-smart-device-client-are-not-listed)
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- [6.8. Q: WebFlasher fails on Linux with failed to open](#68-q-webflasher-fails-on-linux-with-failed-to-open)
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- [7. Other Questions:](#7-other-questions)
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- [7.1. Q: How to update nRF (RAK, T114, Seed XIAO) repeater and room server firmware over the air using the new simpler DFU app?](#71-q-how-to-update-nrf-rak-t114-seed-xiao-repeater-and-room-server-firmware-over-the-air-using-the-new-simpler-dfu-app)
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- [7.1.1 Q: Can I update Seeed Studio Wio Tracker L1 Pro using OTA?](#711-q-can-i-update-seeed-studio-wio-tracker-l1-pro-using-ota)
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- [7.2. Q: How to update ESP32-based devices over the air?](#72-q-how-to-update-esp32-based-devices-over-the-air)
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- [7.3. Q: Is there a way to lower the chance of a failed OTA device firmware update (DFU)?](#73-q-is-there-a-way-to-lower-the-chance-of-a-failed-ota-device-firmware-update-dfu)
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- [7.4. Q: are the MeshCore logo and font available?](#74-q-are-the-meshcore-logo-and-font-available)
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@@ -252,6 +264,34 @@ You can get the latitude and longitude from Google Maps by right-clicking the lo
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`set guest.password {guest-password}`
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### 3.5. Q: Can I retrieve a repeater's private key or set a repeater's private key?
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**A:** You can issue these commands to get or set a repeater's private key using a USB serial connection.
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`get prv.key` to print a repeater's private key on the serial console
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`set prv.key <hex>` to set a repeater's private key on the serila console
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Reboot the repeater after `set prv.key <hex>` command for the new private key to take effect.
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### 3.6. Q: The first byte of my repeater's public key collides with an exisitng repeater on the mesh. How do I get a new private key with a matching public key that has its first byte of my choosing?
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**A:** You can generate a new private key and specific the first byte of its public key here: https://gessaman.com/mc-keygen/
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### 3.7. Q: My repeater maybe suffering from deafness due to high power interference near my mesh's frequency, it is not hearing other in-range MeshCore radios. what can I do?
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**A:** This may be due to the SX1262 radio's auto gain control feature. You can use this command to preiodically reset its AGC.
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`set agc.reset.interval <number>`
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The `<number>` unit is in seconds and is incremented by 4. `set agc.reset.interval 4` works well to cure deafness.
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This is a very low cost operation. AGC reset is done by simply setting `state = STATE_IDLE;` in function `RadioLibWrapper::resetAGC()` in `RadioLibWrappers.cpp`
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### 3.8 Q: How do I make my repeater an observer on the mesh
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**A:** The observer instruction is available here: https://analyzer.letsme.sh/observer/onboard
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---
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@@ -289,7 +329,9 @@ GPS on T-Deck is always enabled. You can skip the "GPS clock sync" and the T-De
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**A:**
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T-Deck uses the same key the smartphone apps use but in base64
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`izOH6cXN6mrJ5e26oRXNcg==`
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The third character is the capital letter 'O', not zero `0`
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There is no `=` key on the T-Deck's hardware keyboard. You can use the on-screen software keyboard to enter `=`. Tap the text box to enable the on-screen software keyboard.
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The third character is the capital letter `O` (Oh), not zero `0`
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The smartphone app key is in hex:
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` 8b3387e9c5cdea6ac9e5edbaa115cd72`
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pyMC_Core is a Python port of MeshCore, designed for Raspberry Pi and similar hardware, it talks to LoRa modules over SPI.
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https://github.com/rightup/pyMC_core
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#### 5.14.7. MeshCore Packet Decoder
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A TypeScript library for decoding MeshCore mesh networking packets with full cryptographic support. Uses WebAssembly (WASM) for Ed25519 key derivation through the orlp/ed25519 library. It powers the [MeshCore Packet Analyzer](https://analyzer.letsme.sh/packets).
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https://github.com/michaelhart/meshcore-decoder
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### 5.15. Q: Are there client applications for Windows or Mac?
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**A:** Yes, the same iOS and Android client is also available for Windows and Intel Mac (sorry, not available for ARM-based Mac yet). You can find them together with the Android APK here:
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https://files.liamcottle.net/MeshCore
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Both the Windows and Intel Mac versions of the client app are fully unlocked and are free to use.
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### 5.16. Q: Are there any resources that compare MeshCore to other LoRa systems?
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**A:** Here is a list of MeshCore comparison resources:
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The Comms Channel on YouTube:
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https://www.youtube.com/watch?v=guDoKGs02Us
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MeshCore Advantages by MCarper:
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https://github.com/mikecarper/meshfirmware/blob/main/MeshCoreAdvantages.md
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Meshcore vs Meshtastic by austinmesh.org
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https://www.austinmesh.org/learn/meshcore-vs-meshtastic/
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---
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## 6. Troubleshooting
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13. If it fails, try turning off and on Bluetooth on your phone. If that doesn't work, try rebooting your phone.
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14. Wait for the update to complete. It can take a few minutes.
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#### 7.1.1 Q: Can I update Seeed Studio Wio Tracker L1 Pro using OTA?
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**A:** You can flash this safer bootloader to the Wio Tracker L1 Pro
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https://github.com/oltaco/Adafruit_nRF52_Bootloader_OTAFIX
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After this bootloader is flashed onto the device, you can trigger over the air update using bluetooth by holding the button next to the D-Pad and then click the reset button. The follow the same OTA update instructions above. You can skip pass the `start ota` instruction and start the update using the DFU app.
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### 7.2. Q: How to update ESP32-based devices over the air?
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Refer to https://github.com/oltaco/Adafruit_nRF52_Bootloader_OTAFIX for the latest information.
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Currently, the following boards are supported:
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- Nologo ProMicro
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- Heltec Automation Mesh Node T114 / HT-nRF5262
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- Nologo ProMicro NRF52840 (aka SuperMini NRF52840)
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- Seeed Studio SenseCAP Card Tracker T1000-E
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- Seeed Studio Wio Tracker L1
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- Seeed Studio XIAO nRF52840 BLE
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- Seeed Studio XIAO nRF52840 BLE SENSE
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- RAK 4631
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- RAK 4631 (See note)
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- RAK WisMesh Tag (new 28/11/2025)
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### 7.4. Q: are the MeshCore logo and font available?
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Reference in New Issue
Block a user