Capabilities

Node role

Features

• Ultra-low-power operation (~16µA power-off)
• Sensor integration
• Auto-reboot / watchdog
• Long-range mesh messaging

1. PowerSaving17 # Latest Pre-release 3 days ago · 2026-08-02 08:56 UTC

   View release ↗

   Internal testing in progress

   Do NOT use for production devices

   Credits

   • Mr. Dom4n: Added RX duty-cycle power saving support

   Features

   • [NEW] RX PowerSaving (LoRa Sleep) to keep power consumption of repeater down to 2mA. All other features would work as normal. TODO: To set set radio.rxps balanced automatically when powersaving on
   • PowerSaving
   • GPS PowerSaving

   

   Configuration:

   • powersaving on
   • gps off
   • set radio.fem.rxgain off
   • powersaving off => powersaving on => (set radio.rxps off) => set radio.rxps balanced vs. set radio.rxps level 10 preamble 16

   Optional CLIs

   • get radio.rxps
   • get rxps.wd

   Reaching 1mA

   Test results are measured by Uni-T 890C 6000 counts:

   • Heltec T096, 4.2 and 4.3 have external TX amplifier and comsume more power.

   Board	powersaving off set radio.rxps off	powersaving on set radio.rxps off	powersaving on set radio.rxps balanced	powersaving on set radio.rxps level 10 preamble 16
   T096 repeater	15.3mA	9.1 mA	4.6-8.8mA	2.8-8.4mA
   T114 repeater	14mA	7.9mA	3.4-7.5mA	1.6-7.3mA
   Heltec v4.2 repeater (FEM always on)	50mA	14.5mA	9.9-13.9mA	8.0-13.4mA
   Heltec v4.3 repeater	-	-	-	-
   RAK4631 repeater	8.8mA	6.0mA	2.4-5.8mA	0.9-6.0mA
   T-Echo Lite BLE companion	-	9.6-13.4mA	4.7-13.4mA	-
   T1000e BLE companion	-	15-17mA via USB	13-14mA via USB	-

   • RAK4631, T114, T096 repeaters

   

   • Heltec v4.2 repeaters

   
2. PowerSaving16.1 # 1 month ago · 2026-06-29 14:20 UTC

   View release ↗

   Bring PowerSaving to repeaters and companions with GPS

   • Developed by IoTThinks and tested by our supportive MeshCore friends.
   • Contribution to MeshCore: By IoTThinks.
   • 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

   • 31 July 2026: PowerSaving 16.1.4: Added universal fix to support OLED for all versions of T-Beam Supreme. Fixed GPS for ThinkNode M3 and M6.
   • 26 July 2026: PowerSaving 16.1.3: Displayed battery voltage and powersaving status for repeaters
   • 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

   • Enjoying our work?
   • Support us via or .

   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.

   

   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.

   

   • During GPS sleep, the GPS status still shows "Enabled" and GPS telemetry still shows the last GPS updated location. < …
3. PowerSaving16 # 2 months ago · 2026-06-08 14:58 UTC

   View release ↗

   Keep making 1-2W solar repeaters and 5-day BLE companions possible:

   • Developed by IoTThinks and tested by our supportive MeshCore friends.
   • Contribution to MeshCore: By IoTThinks.
   • Source code: https://github.com/IoTThinks/MeshCore/tree/PowerSaving-v16

   IMPORTANT NOTICES

   • For repeaters / room servers, after upgrade to PowerSaving 16, you need to check and set the default values again set flood.max 64 (default value) , set flood.max.unscoped 64 (default value) and set radio.fem.rxgain on/off (Heltec v4.3 and T096 only, if you set "off" before) https://github.com/meshcore-dev/MeshCore/pull/2140#issuecomment-4677295983

   The power consumption of common boards is measured at battery cable. Ping us if your boards are not low power as expected.

   Board	Repeaters / Room Servers	BLE Companions	Power Off for BLE Companions
   Heltec v3	9mA	19.6mA	~16uA
   Heltec v4.2 and v4.3 (FEM ON)	16mA	28.6mA	~16uA
   Heltec v4.3 (FEM Off)	13mA	24.9 mA	~16uA
   Xiao S3, C3	7mA	15 mA	~16uA
   Xiao C6	7mA	C6 is not supported yet	~16uA
   RAK 4631, Heltec T114, Xiao NRF52	5.8mA	5.8mA	~16uA
   Heltec T096 (FEM Off)	8.7mA	8.6 mA	~16uA
   Heltec T096 (FEM On)	16mA	16 mA	~16uA

   Support Us

   • Enjoying our work?
   • Support us via or .

   Updates:

   • v16.0.3: Fixed T-Echo lite to hibernate at 1mA instead 6mA. We will cut power more in PowerSaving 17 to reduce to 10uA.
   • v16.0.2: Fixed GPS time sync for Heltec T114. It will sync after boot and GPS lock. It will sync time every 30 minutes or by manual "gps sync"
   • v16.0.1: Wio Tracker L1 BLE companion has high power consumption is at 35mA in PowerSaving 16 instead of 7.5mA as in PowerSaving 15. This issue might affect a few NRF52 boards with GPS modules attached.

   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

   Features:

   Based on MeshCore 1.16, plus PowerSaving features and more:

   • Repeaters and room servers for both ESP32 and NRF52: CLI powersaving on, powersaving off and powersaving
   • BLE companions for both ESP32 and NRF52: Enabled by default
   • [NEW] Hibernate mode for ESP32 BLE Companions now work properly and at 16uA
   • [NEW] Optimize Heltec T096 from 12mA down to 8.7mA
   • [NEW] Repeaters for both ESP32 and NRF52: CLI set reboot.interval <hours> and get reboot.interval. hours is 0-255. 0 is default and disabled. This helps to recover repeaters due to unknown hang.
   • [NEW] Set return path for repeaters: https://github.com/meshcore-dev/MeshCore/pull/2586
   • [NEW] Add time keeping for NRF52 across resets: https://github.com/meshcore-dev/MeshCore/pull/2704
   • FEM LNA for Heltec v4.3, Heltec T096, Heltec TrackerV2: CLI `set radio.fe …