Heltec Automation · Dev board
Heltec Mesh Node T114
Low-power nRF52 board for battery or solar nodes; Meshtastic community favorite.
Meshtastic: officially supportedMeshCore: supported
From $17.90List price on heltec.org, checked November 1, 2026
At a glance
Battery
Not included
GPS
Optional
Screen
Optional
Water resistance
Not listed
Chip
nRF52840 (low power)
List price
From $17.90
Strengths
- nRF52840 chip, which Meshtastic says uses less power than ESP32 boards
- Runs either Meshtastic or MeshCore
Trade-offs
- No battery included; check the connector before buying one
Based on published specs, not hands-on testing.
Specifications
| Type | Dev board (low power) |
|---|---|
| Processor | nRF52840 |
| LoRa radio | SX1262 (21+/-1 dBm max) |
| US 915 MHz version | Yes (902-928 MHz listed on heltec.org and Meshtastic page.) |
| Screen | Optional TFT 1.14 in (135x240) |
| Keyboard | No |
| GPS | Optional (8-pin GNSS connector; optional L76K module.) |
| Battery | None included; SH1.25x2 lithium battery connector |
| Solar input | Yes (SH1.25x2 solar connector; Heltec FAQ: 5-6.5 V acceptable, ~5 V recommended.) |
| Wi-Fi | No |
| Bluetooth | Bluetooth 5.0 |
| Water resistance | Not listed |
| List price | $17.90–$33.70 (heltec.org price range across screen/GPS/shell options.) |
Checked November 1, 2026. "Not listed" means the maker and official docs don't state it.
Known issues and cautions
From the maker's documentation and the official Meshtastic docs.
- Heltec FAQ: some units fail to send long strings (>50 chars) ONLY in Long-Fast mode (SF11, 250K BW) under Meshtastic; Heltec says 433 MHz and 470 MHz versions are not affected.
- heltec.org: the 2.4 GHz antenna is not replaceable.
- Meshtastic docs: flash by double-clicking RST to enter DFU, then copy the UF2.
Similar devices
- Heltec WiFi LoRa 32 V3 / V3.1 Dev board, $17.90–$19.90
- Heltec WiFi LoRa 32 V4 Dev board, $17.90–$27.50
- Heltec Wireless Tracker (V1.1) Dev board, $22.90
- Heltec Wireless Tracker V2 Dev board, $30.90
Compare Heltec Mesh Node T114 with Heltec WiFi LoRa 32 V3 / V3.1 and Heltec WiFi LoRa 32 V4
Sources
- meshtastic.org/docs/hardware/devices/heltec-automation/mesh-node/
- meshtastic.org/docs/hardware/devices/
- heltec.org/project/mesh-node-t114/
- github.com/meshcore-dev/flasher.meshcore.io/blob/main/config.json
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