SPECIFICATIONS

Accessory Type: Extension Board

Battery: 3~4.2V battery power supply and charge.

Battery Included: no

Bluetooth: Bluetooth LE: Bluetooth 5, Bluetooth mesh

Brand Name: Heltec Automation

Choice: yes

Compatible With: T114

Dimensions: 50.80*22.86mm

Display: onboard 1.14 inch TFT-LCD display

Frequency: 863~928MHZ

High-concerned chemical: none

LoRa Node Chip: SX1262

MCU: nRF52840

Max. Receiving sensitivity: -135dBm@SF12 BW=125KHz

Max. TX Power: 21±1dBm

Operating Temperature: -20 ~ 70 ℃

Origin: Mainland China

Product Name: Heltec t114

Typical Application Fields: Internet of Things (IoT)

semi_Choice: yes

Note:

Batteries are not included in this listing!

If you wish to purchase batteries, please click the link below:

Heltec 3.7V LiPo Battery 800mAh 3000mAh SH1.25 Connector for LoRa 32 V3 V4 T114 Wireless Stick Meshtastic Node Kit - AliExpress 44

Docs & Resource

Summary

Mesh Node T114 is a Power Consumption development board based on the nRF52840 and SX1262,

supporting LoRa and Bluetooth 5.0. which integrates various power interfaces (5V USB, lithium battery,

and solar panel), an optional 1.14-inch TFT display, and a GPS module as accessories, and features

powerful wireless long-distance communication capabilities, scalability, and a low-power design.

With Heltec nRF52 development environment and libraries. You can use it for LoRa/LoRaWAN

development work, and also use it to run some open source projects, such as Meshtastic and Meshcore.

Specification

Main Features

• MCU nRF52840 (Bluetooth), LoRa chipset SX1262.

• Powerful display function (optional), onboard 1.14 inch TFT-LCD display contains 135(H)RGB x240(V) dots and can display up to 262k colors.

• Low power consumption, 11 uA in deep sleep.

• Operation condition: -20 ~ 70℃, 90%RH(No condensing).

• Type-C USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection measures.

• Compatible with Arduino, we provide development frameworks and libraries.

• Various Interfaces: 1.25*2P LiPo connector, 1.25*2P Solar panel connector, 1.25*8P GNSS module connector, which greatly increase the extensibility of the board.
  

FAQ

Can the onboard 2.4GHz antenna be replaced?

The 2.4GHz antenna is a multilayer ceramic antenna for Blue Tooth communications, it can't be replaced.

What development methods does it support?

• Arduino

• PlatformlO

In addition to Meshtastic support, we have also developed a complete LoRaWAN protocol in the nRF52Arduino framework.

What's the battery socket type?

You can find this type of socket by search "SH1.25 x 2".

What is the maximum size of battery supported by the default casing?

The maximum capacity of the shell for carrying batteries is 42 2811mm, and the default 3.7V

lithiumbattery size is 40 * 25*10mm.

How to enter meshtastic on the screenless version of mesh node 114?

Just download the screenless version firmware and enter the 123456 password.

What is the acceptable battery range for the solar panel connected to mesh node 114?

5V~6.5V, it is recommended to connect solar panels with a voltage of around 5V.

Does 433MHz and 470MHz version has long chars sending issue?

With our detailed and long time testing, there is NO issue with long packet transmission in versions433MHz and 470MHz, so they are not included in the compensation list.But in response to users' demand for the 433 and 470 hardware V2 versions, our engineers are debuggingthe corresponding hardware. It will be released soon.