Heltec T114

Intro: The Heltec T114 is a modular, low‑power Meshtastic‑ready node built on the Nordic nRF52840 platform. It’s designed for flexible power options, outdoor deployments, and expansion with GPS or display modules, making it a versatile choice for both portable and backbone roles.

Key Features:

Nordic nRF52840 MCU with Bluetooth 5.0 support
SX1262 LoRa transceiver for long‑range communication
Frequency options: 433 MHz, 470–510 MHz, 863–870 MHz, 902–928 MHz
Optional 1.14″ TFT‑LCD display
Optional GNSS module via dedicated interface
Multiple power interfaces:
USB‑C
2×1.25 lithium battery connector
2×1.25 solar panel connector
8×1.25 GNSS interface
U.FL/IPEX antenna connector for LoRa + integrated 2.4 GHz patch antenna
Firmware flashing via UF2 drag‑and‑drop (DFU mode with reset button double‑click)

Considerations:

Optional modules (GPS, display) add cost and complexity — clarify operator needs before purchase
Requires external antenna for optimal LoRa performance
Firmware flashing workflow differs from ESP32 boards (UF2 vs USB serial)
Best suited for solar‑powered or semi‑permanent nodes in outdoor deployments
More expensive than entry‑level Heltec boards, but offers better modularity and power flexibilit

Last modified November 28, 2025: More Mis Updates (e299c08)