SparkFun LTE Stick - Manuale utente Lara-R6

Introduzione

The SparkFun LTE Stick provides a development and prototyping platform for the LARA-R6 LTE Cat 1 module from u-blox. This version, LARA-R6401, is designed for North America, supporting both data and voice communication across major mobile networks including AT&T, Verizon, T-Mobile, and FirstNet. It features a nanoSIM card slot for network selection and includes common u-blox functionalities like uFOTA (over-the-air firmware updates), Root of Trust, secure boot/update, jamming detection, and antenna/SIM detection.

The board routes UART and I2S interfaces to a 0.1-inch spaced plated-through-hole (PTH) header, along with Reset and Power On signals, facilitating easy breadboard prototyping. It also includes two SMA connectors for primary and secondary antennas, and power can be supplied via USB-C or the VIN PTH pin.

Prodotto finitoview

Impostare

1. Alimentazione

The SparkFun LTE Stick can be powered in two ways:

• Connettore USB-C: This is the recommended power source. Connect a standard USB-C cable to the board and a power source (e.g., computer USB port, USB wall adapter).
• VIN PTH Pin: For advanced users, power can be supplied via the VIN plated-through-hole pin. The maximum input voltage for VIN is 6V. The board defaults to using the higher voltage input if both are connected.

2. Installazione della scheda SIM

The board includes a nanoSIM card slot. Insert your nanoSIM card into the designated slot. Ensure the SIM card is oriented correctly as indicated on the board.

Nota: Check with your network provider for compatibility with the LARA-R6 module.

3. Collegamento dell'antenna

The LTE Stick features two SMA connectors for antennas:

• Primary Antenna (ANT1): This antenna is used for both transmitting and receiving data.
• Secondary Antenna (ANT2): This antenna is receive-only.

Connect appropriate LTE antennas to these SMA connectors. For optimal performance, ensure both antennas are connected.

4. Interfacing with Microcontrollers

The board provides PTH headers for easy connection to breadboards and microcontrollers:

• Interfaccia UART: Primary communication interface for data.
• I2S Interface: For digital audio applications, enabling voice functionality.
• Reset and Power On Signals: Accessible via PTH for external control.

Test points are available for advanced users to solder to for the I2C interface, secondary UART, and four GPIO pins (IO1, IO2, IO3, and IO6). These test points are 1.8V only and are not level-shifted.

Istruzioni per l'uso

Funzionamento di base

1. Ensure the SIM card is properly inserted and antennas are connected.
2. Connect the USB-C cable to power the device. The power LED on the board should illuminate.
3. Use the UART interface to communicate with the LARA-R6 module via AT commands. Refer to the u-blox LARA-R6 series documentation for a comprehensive list of AT commands and their usage.
4. For voice applications, connect an audio codec, microphone, and speaker to the I2S interface and implement the necessary code on your microcontroller.

Firmware Updates (uFOTA)

The LARA-R6 module supports uFOTA (over-the-air firmware updates). Consult u-blox documentation for detailed procedures on performing firmware updates to ensure your module has the latest features and security enhancements.

Manutenzione

• Mantenere la tavola pulita e libera da polvere e detriti.
• Evitare di esporre la tavola a temperature o umidità estreme.
• Ensure proper ventilation when operating for extended periods.
• Handle the board by its edges to prevent damage to components.
• Regularly check for and apply firmware updates as recommended by u-blox to maintain optimal performance and security.

Risoluzione dei problemi

Specifiche

• Moduli: u-blox LARA-R6401 LTE Cat 1
• Regione: America del Nord
• Bande LTE FDD: 2, 4, 5, 12, 13, 14, 66, 71
• Interfacce:
  • 2x UART
  • USB 2.0
  • I2C
  • 9 pin GPIO
  • Digital Audio (I2S)
• Slot per scheda SIM: Nano SIM
• Connettori dell'antenna: 2x SMA (Primary: Transmit & Receive, Secondary: Receive Only)
• Potenza in ingresso: USB-C (recommended) or VIN PTH pin (6V Max)
• Volume di eserciziotage: 3.3V or 1.8V (for test points)
• Dimensioni: 3.74 x 0.98 x 0.2 pollici
• Peso: 8 once

Supporto

For additional support, technical documentation, and community forums, please visit the official SparkFun website or the u-blox documentation portal for the LARA-R6 series.

SparkFun Store: Visit the SparkFun Store on Amazon