آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

The Laird BL654 Development Kit provides a platform for rapid wireless connectivity prototyping, providing multiple options for the development of Bluetooth Low Energy (BLE) plus Near Field Communication (NFC) applications. The Laird BLE development kit is designed to support the rapid development of applications and software for the BL654 series of BLE modules featuring Laird’s innovative event driven programming language – smartBASIC or for use with the Nordic SDK for C development. The BL654 development board is a universal development tool that highlights the capabilities of the BL654 module. The development kit is supplied in a default configuration which should be suitable for multiple experimentation options. It also offers several header connectors that help isolate on-board sensors and UART from the BL654 module to create different configurations. This allows you to test different operating scenarios. The board allows the BL654 series module to physically connect to a PC via the supplied USB cable for development purposes. The development board provides USB-to-Virtual COM port conversion through a FTDI chip – part number FT232R.

Features

• BL654 series module soldered onto the development board
• The following power supply options for powering the development board:
  • USB (micro-USB, type B)
  • External DC supply (3.5-5.5V)
  • AAA batteries (three AAA battery holder fitted on underside of development board)
  • USB (micro-USB, type B) for direct use of BL654 USB interface as well
• Powering the BL654 module in Normal Voltage mode (OPTION1) via selection switch (SW7). Regulated 3.3V or Regulated 1.8V via selection switch (SW5).
• Powering the BL654 module in High Voltage mode (OPTION2) via selection switch (SW7). Regulated 2.5V or 4.5V (from 3x AAA battery – 4.5V) via selection switch (SW8). Option to inject external voltage anywhere between 3.5V to 5.5V for the High Voltage mode (via J28).
• USB to UART bridge (FTDI chip)
• USB1 (PC) using the USB-UART bridge (FTDI chip)
  • External UART source (using IO break-out connectors J1 – No-Pop, Plated Through Holes) when the development board is powered from a DC jack or AAA batteries) or from USB1 (when jumper fitted in J35).
  • Atmel MCU by use of an analog switch to route the BL654 UART (for those customers working with Nordic SDK).
  • USB2 to Atmel to Atmel UART (via open solderbridges) to BL654 UART.
• Current measuring options (BL654 module only):
  • Pin header (Ammeter)
  • 10R Series resistor for differential measurement (oscilloscope)
• IO break-out 2.54 mm pitch pin header connectors (plated through-holes) that bring out all interfaces of the BL654 module – UART, SPI, QSPI, I2C, SIO [DIO or AIN (ADCs)], PWM, FREQ, NFC – and allow for plugging in external modules/sensors.
• Pin headers jumpers that allow the on-board sensors (I2C sensor, LEDs) to be disconnected from BL654 module (by removing jumpers).
• Analog output temperature sensor via header in series (no jumper by default)
• I2C device (RTC chip U16) via headers in series (no jumper by default)
• SPI device (EEPROM)
• QSPI device (Flash IC) via open solderbridges (by default)
• Four buttons and four LED