LilyGo T-Beam (SX1262)

⚠️ Check that radio.rxgain(on) and flood.advert.base (0.308) are set correctly after flashing! ⚠️

This build is based on official MeshCore 1.15.0 dev branch (as of 25-May-2026 and additionally includes the following unmerged upstream PRs/changes:

• PR2553: Limit flood advert packet forwarding --> set flood.advert.base 0...1 (0: no flood adv. forwarding, 0.308: default, 1: all flood adv. forwarding)
• PR1810: Allow direct message paths when denyf * is set
• :new: PR1727: Use hardware channel activity detection for checking interference --> Use set int.thresh 1 to activate hw based channel activity detection.
• :new: PR2377: Disable NRF52 undervoltage bootlock feature

Additional changes:

• Flood adverts are disabled (flood.advert.interval set to 0) by default
• :new: modified PR1810 to not block flood adverts but only PAYLOADTYPEGRPTXT and PAYLOADTYPEGRPDATA so that some limited flood advert distribution can be managed via PR2553 to support e.g. observer maps.

Changelog:

• Based on dev v1.15.0 as of 25-May-2026

Full Changelog: https://github.com/mattzzw/MeshCore-Evo/compare/v1.15.0-evo0.1.20...v1.15.0-evo0.1.21

Bring PowerSaving to repeaters and companions with GPS

• Developed by IoTThinks and tested by our supportive MeshCore friends.
• Contribution to MeshCore: By IoTThinks%20is%3Apr%20author%3A%40IoTThinks).
• Source code: https://github.com/IoTThinks/MeshCore/tree/PowerSaving-v16

Notices

If your devices do not have GPS modules, you can use PowerSaving 16. Not supported: Mesh Adventurer (unable to off GPS power) and ThinkNode M1 (manual GPS switch).

Updates

23 July 2026: PowerSaving 16.1.2: Added GPS PowerSaving for Seeed T1000e, Heltec Mesh Solar and Heltec Tracker. 23 July 2026: PowerSaving 16.1.2: Added GPS PowerSaving for Tbeam repeaters and companions. Fixed OLED for TBeam Suspreme 22 July 2026: PowerSaving 16.1.2. Added GPS PowerSaving for RAK / GAT562 repeaters and companions 20 July 2026: PowerSaving 16.1.1. Added GPS PowerSaving for companions

Support Us

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Instruction:

• Scroll down to bottom to download uf2 / upgrade.bin to upgrade or freshInstall-merged.bin for new devices.
• Heltec v4 bin files is for both Heltec v4.2 and v4.3. Heltec v4.3 bin files is for Heltec v4.3 only
• Heltec v4.3 and T096 have two options FEM RXgain on and FEM Rxgain off.
• Flash Custom Firmware as in INSTRUCTION.
• If your board is not at the bottom section, please request us at GITHUB
• Fast support: Discord

GPS PowerSaving for repeaters: Similar power consumption as without GPS.

This is for repeaters to sync time with GPS while keeping the power consumption low as GPS is off most of the time. Activating GPS PowerSaving: powersaving on and gps on. Note: We must enable powersaving on before gps on else we need to 'gps on' again. You can check the status and last sync by CLI gps. GPS will stay awake up to 10 minutes then off for 1 day to save power. GPS will be off immediately after a valid time sync. At boot, GPS will atempt to sync once. You can force gps sync by CLI gps sync. The 'gps sync' requires 'gps on`. Additional validation check for GPS time: Must be from more than 5 satellites and year must be less than 2030.

<img width="512" alt="image" src="https://github.com/user-attachments/assets/aee2a0c9-6d81-46ee-9dba-aafb69bd20ea" />

GPS PowerSaving for companions: Only 10-20% extra compared to without GPS.

This is for companion to track locations and sync time with GPS while keeping the power consumption low as GPS is off periodically. GPS PowerSaving is enabled by default when you enable GPS in MeshCore app. Default GPS PowerSaving profile: Maximum 10 minutes to keep GPS on and sleep immediately when GPS is set. Sleep period is 5 minutes. <img width="1084" height="117" alt="image" src="https://github.com/user-attachments/assets/f4667961-d6b2-4bf8-a09f-e4a68bd1973b" />

During GPS sleep, the GPS status still shows "Enabled" and GPS telemetry still shows the last GPS updated location.
<img width="275" height="454" alt="image" src="https://github.com/user-attachments/assets/dfd1ee28-854d-4034-8451-7c39226e0e60" />
<img width="273" height="449" alt="image" src="https://github.com/user-attachments/assets/dc7ecec5-4241-4f8c-adc5-31f68925f428" />

Other Features

View more at https://github.com/IoTThinks/MeshCore/commits/PowerSaving-v16/

Enjoy the long battery life with MeshCore and GPS. 👯‍♂️ 👯‍♂️ 👯‍♂️

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...repeater-v1.0.1

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...companion-v1.0.1

Full Changelog: https://github.com/MichTronics/MeshCoreNG/compare/bridge-tcp-v1.0.5...room-server-v1.0.1