Color
Descripción
1. Excellent performance and convenient operation
2. MCU nRF52840 (Bluetooth-compatible), LoRa chip SX1262
3. Low power consumption, deep sleep 11 μ A
4. Powerful display function (optional), onboard 1.14-inch TFT-LCD display screen
5. 135 (H) RGBx240 (V) can display 262K colors
6. Rich interfaces (2 * 1.25mmLiPo connectors, 2 * 1.25mm solar panel connectors)
7. The 7.8 * 1.25mm GNSS module connector greatly increases the expandability of the board
Product Description:
Mesh Node T114 is a low-power development board based on nRF52840 and SX1262, supporting LoRa and Bluetooth 5.0. Integrated with various power interfaces (5V USB, lithium battery, and solar panel), optional 1.14-inch TFT display screen and GPS module as accessories, with powerful remote communication capabilities, scalability, and low-power design.
Use the Heltec nRF52 development environment and library. You can use it for LoRa/LoRaWAN development work, as well as for running some open source projects such as Meshtastic.
Parameter:
Microcontroller: nRF52840
LoRa Node Chip: SX1262
Frequency:
433-510mhz； 863-928mhz * (optional)
Maximum TX power: 21 ± 1dBm
Maximum receiving sensitivity: -135dBm@SF12 BW=125KHz
Bluetooth-compatible: Bluetooth-compatible LE: Bluetooth-compatible 5, Bluetooth-compatible mesh
Hardware resources: USB 2.0, 4 * SPI, 2 * TWI, 2 * UART, 4 * PWM, QPSI, 12S, PDM, QDEC, etc.
Storage: 1M ROM
256KB SRAM
Interface: Type-C USB
2 * 1.25 lithium battery connector
2 * 1.25 solar panel connector
LoRa ANT（IPEX1.0）
8 * 1.25 GPS module connector
2 * 13 * 2.54 plug pins
Battery: Powered and charged by a 3-4.2V battery. (The product does not come with a battery)
Working temperature: -20~70 ℃
Size: 50.80 * 22.86mm
Electrical characteristics:
Deep sleep:~11uA
Tracker mode sleep:~22uA
GPS off, TFT off:~9mA
GPS off, TFT on:~20mA
GPS on, TFT on:~51mA
Display: On board 1.14-inch TFT-LCD display (optional)
GPS module description:
L76K is a device that supports multiple satellite systems (GPS BDS、GLONASS、QZSS)、 A GNSS module that supports multi system joint positioning and single system independent positioning, AGNSS function, built-in low-noise amplifier and acoustic surface filter, and can provide users with fast, accurate, and high-performance positioning experience.
Compared to a single GPS system, a multi satellite system significantly increases the number of visible and available satellites, improves positioning accuracy, and can achieve stable high-precision positioning even in complex urban environments. Supporting AGNSS functionality can greatly reduce the time required for initial positioning. Built in low-noise amplifier can achieve high sensitivity, high precision positioning, and fast signal capture and tracking, ensuring good positioning performance even under weak signal conditions. Built in acoustic surface filter can greatly enhance the anti-interference ability of the module. Internally integrated with active antenna detection circuit and protection circuit, it can protect the module and active antenna from damage.
