EasySkyMesh

Capabilities

Node roles

Features

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

1. PowerSaving16 # Latest 13 days 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

   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 .

   Known issues and Patches:

   • 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
   • [Fixed in 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.fem.rxgain on/off and get radio.fem.rxgain. https://github.com/meshcore-dev/MeshCore/pull/2140
   • Automatically select I2C address (0x76 or 0x77) for BME280, BME680 and BMP680.
   • Fixed boot loop for Xiao C6: https://github.com/meshcore-dev/MeshCore/pull/2570
   • Ch …
2. PowerSaving15 # 2 months ago · 2026-04-24 23:58 UTC

   View release ↗

   Based on MeshCore v1.15 plus the below features:

   • Developed by IoTThinks and tested by our supportive friends and MeshCore community.
   • Current Contribution to Meshcore: By IoTThinks. You may feedback there to get them merged faster to MeshCore main stream.
   • If you want us to compile for your boards or have question, please comment in GITHUB or DISCORD

   Updates:

   • 15 May 2026: PS v15.0.2: Fixed boot loop due to flash mode for Xiao C6
   • 10 May 2026: PS v15.0.2: Fixed FEM Off version for T096 BLE companions. The external LNA was fixed to off properly to reach -115 dbm noise floor.
   • 04 May 2026: [BLE Companions for ESP32] PS v15.0.1: Skipped sleep when BLE read is busy and reduced sleep period from 50ms to 10ms.
   • 27 April 2026: [Heltec v4 repeaters and room servers] PS v15.0.1: Applied latest changes in https://github.com/meshcore-dev/MeshCore/pull/2140. Fixed missing get radio.fem.rxgrain and not persisted radio.fem.rxgrain accross reboots.

   Support Us

   • Enjoying our work?
   • Support us via or .

   STAR Features:

   • ESP32 BLE Companions: Officially support PowerSaving for ALL ESP32/S3/C3 BLE Companions. Fast loading of channels and contacts. Fixed hibernation mode for Heltec v3 and v4. ESP32C6 (including Xiao C6) is not supported yet.

   Board	Power Consumption
   Heltec v3	100 mA => 19.6 mA
   Heltec v4.2 and v4.3 (FEM ON)	120mA => 24.9mA
   Heltec v4.3 (FEM Off)	120mA => 18mA
   Xiao S3	7x mA => 16.3 mA
   Xiao C3	7xmA => 15.1mA

   • [BETA] Repeater and room servers: No time drift by applying a time adjustment offset during "powersaving on"

   Power Saving:

   • Latest Power Saving to Repeater, Room Server and BLE Companion.
   • One 3000mAh battery can last an ESP32 repeaters, room servers and BLE companions for a week.

   Role	NRF52	ESP32	CLI Commands
   Repeater / Room Server	8mA => 5.8mA	50+mA => 10-13mA	powersaving on, powersaving off, powersaving
   BLE Companion	12mA => 5.8mA	120mA => 15-20mA	Enabled by default

   Extra Features:

   • Merged to add CLI control to LoRa's FEM LNA: https://github.com/meshcore-dev/MeshCore/pull/2140. CLI: set radio.fem.rxgrain on/off and get radio.fem.rxgrain
   • Added CLI "powerlog" to list the last reset reason, last shutdown reason (NRF52 only) and last boot voltage (NRF52 only). This is to help debugging why the boards were reset due to software fault or low voltage (brownout).
   • Included sensor CLI to list I2C and UART GPIOs: sensor
   • Merged to keep date after crash/watchdog/brownout reset on ESP32: https://github.com/meshcore-dev/MeshCore/pull/1896
   • Automatically selected I2C address 0x76 and 0x77 for BME280/BME680/BMP280
   • Added i2c probe for sensors to start only in-use sensors.
   • Added variant Xiao S3 (non-Wio) and Wio SX1262 (Initial support): SDA=D6, SCL=D7 https://github.com/meshcore-dev/MeshCore/pull/2383

   Instruction:

   Please upgrade your easy to access devices first.

   • Download: Download upgrade.bin to upgrade existing devices or freshInstall-merged.bin for new devices.
   • Instruction to Flash Custom Firmware …
3. PowerSaving14.1 # 3 months ago · 2026-03-27 12:38 UTC

   View release ↗

   Based on MeshCore v1.14.1 plus the below features:

   • 16 April 2026 -v14.1.1: Disabled NRF52_POWER_MANAGEMENT for RAK4631, RAK3401, Heltec T114, Xiao NRF52, Senscap Solar and Ga562_30s meshkit and Ga562_30s mesh tracker pro.
   • 10 Arpril 2026 - v14.1.1: [BETA] Added Power saving for Heltec v3, v4.2 and v4.3 companion BLE. Reduced from 120mA down to 32mA for Heltec v3 and 39mA for Heltec v4. LNA and FEM LNA use default settings (E.g On).
   • 09 April 2026 - v14.1.1: Fixed reset issue in high traffic locations for ESP32-based repeaters and room servers.

   NEW FEATURES:

   • Added Heltec v4.3 support: https://github.com/meshcore-dev/MeshCore/pull/1867. The PR will automatically detect Heltec v4.2 and v4.3.
   • Added CLI control to LoRa's FEM LNA: https://github.com/meshcore-dev/MeshCore/pull/2140. Heltec T090 is not included. The details are below.
   • Added CLI "powerlog" to list the last reset reason, last shutdown reason (NRF52 only) and last boot voltage (NRF52 only). This is to help debugging why the boards were reset due to software fault or low voltage (brownout).

   FEM LNA vs. Chip LNA:

   • FEM LNA is external LNA from the 1W boards (such as Heltec v4.3). You can on / off this FEM LNA: set/get radio.fem.rxgain on/off. This will impact the RX gain and power consumption (up to 7.8mA). When this is off, Heltec v4.3 can reach 5.8mA. For Heltec v4.2, this CLI will return "Not supported" as it does not support FEM control.
   • Chip LNA inside SX1262: This is available to all boards including 1W boards. You can on/off this LNA : set/get radio.rxgain on/off. This will impact the RX gain and power consumption (up to 0.5mA)

   Repeaters and Room Servers:

   • Included latest PowerSaving and PowerSaving CLI (powersaving, powersaving on and powersaving off): 5.0mA for NRF52, 10mA for Heltec v3, 13mA for Heltec v4.2 and 5.5 mA for Heltec v4.3 (with FEM off). https://github.com/meshcore-dev/MeshCore/pull/1687

   Companions:

   • [NRF52] PowerSaving by default. Reduced from 9mA down to 5.8mA. https://github.com/meshcore-dev/MeshCore/pull/2286
   • [BETA] [ESP32] PowerSaving by default for Heltec v3 and v4. Reduced from 120mA down to 32mA for Heltec v3 and 39mA for Heltec v4.2 and 4.3.

   Common features

   • Included sensor CLI to list I2C and UART GPIOs: sensor
   • Kept date after crash/watchdog/brownout reset on ESP32: https://github.com/meshcore-dev/MeshCore/pull/1896
   • Automatically selected I2C address 0x76 and 0x77 for BME280/BME680/BMP280
   • Added i2c probe for sensors to start only in-use sensors: https://github.com/meshcore-dev/MeshCore/pull/1282
   • Added variant Xiao S3 (non-Wio) and Wio SX1262 (Initial support): SDA=D6, SCL=D7

   Instruction:

   Please upgrade your easy to access devices first.

   • Download: Download upgrade.bin to upgrade existing devices or freshInstall-merged.bin for new devices.
   • Instruction to Flash Custom Firmware.
   • Please read the instruction in Add sensors to repeaters
   • Source code for PowerSaving 14

   Demo

   Power Saving

   • Enter powersaving mode (CLI > powersaving on),
   • 5.5mA for Heltec v4.3 with FEM and rxgain off, 5.8mA if FEM off and rxgain on. Thanks Wireless Rocks for your testing, .
   • 13mA for Heltec v4.2 or Heltec V4.3 with FEM and rxgain on.
   • 5.0mA for RAK4631

   

   • Default PowerSaving for Heltec v3, v4.2 and …