RN4871 Click: New LE Bluetooth 4.2 Click Module By Mikroelektronika

 RN4871 Click: New LE Bluetooth 4.2 Click Module By Mikroelektronika

 Today’s topic is related to All-New Mikroelektronika’s Click PCB module, using well-known Microchip RM4871 BLE V4.2 Hybrid Chip.

 Right now, we both are going to change for a while our focus to the pure hardware. 

 Let’s see: RN4871 click – New Low Energy Bluetooth V4.2 click mikroBUS line Module By Mikroelektronika.

 The newest Mikroe’s RN4871 Click BLE Module is integrating the Microchip’s RN4871 – Bluetooth® 4.2 low-energy BLE module. The Built in Microchip’s module has 16-pins, very small footprint – 9mm x 11.5mm, and built-in ceramic antenna. 

 The click is designed following the mikroBUS™ line pins. It running at the 3.3VDC power supply. Two SMT LEDs are indicating The Power health and the System Status.  

PIC. 1  Mikroelektronika RN4871 Click  – Top View


Microchip Basic BTModule:

AMAZON.CO.UK Affiliate Link:  Microchip RN4871 Basic BTModule:


Command Interface:

  RN4871 click uses ASCII Command Interface over UART. The communication with target microcontroller has done by 5 pins – four of them communication pins – RX, TX, CS and INT From MikroBUS Lines. These two Additional Pins are used as is following:  

  •  CS is RTS – UART_RTS {Ready To Send},
  •  INT is CTS – UART_CTS {Clear To Send}.

  Both pins are used for making reliable data transfer supporting asynchronous hardware handshake.

  Next pins are as following:

 3V3, GND, and RST

  The Power is applying through 3V3 and GND Pins. The “RST” is Module Reset Pin. 


RN4871 Click – Key Benefits:

  • Compact Footprint, 
  • Using Microchip RN4871 Bluetooth module onboard,
    • API with ASCII based command interface over Serial UART,
    • Security:  128-bit Encryption – AES128, 
    • Antenna: Built-in Ceramic Chip Antenna,
    • Integrated Bluetooth 4.2 Low Energy Stack,
  • Command Interface:
    • Serial UART, 
  • Pinouts: Uses mikroBUS’ Standard Pinout Interface,
  • Frequency Range in 2.4 GHz Band:  
    • 2.402 … 2.480 GHz,
  • Operating Temperature Range:
    • -20°C … +70°C, 
  • RF Receiver Sensitivity:
    • 90dBm,
  • Power Supply Voltage:
    • 1.9V to 3.6V DC – Typical 3.3V


PIC. 2  Mikroelektronika RN4871 Click – Used mikroBUS Pins 

  As is seen at PIC. 2, all necessary different Pins to connect with host microcontroller are 7 in the count:

  • Pin-2: System or Module Reset,
  • Pin-3: UART_RTS {Ready To Send},
  • Pin-7: Power Supply Pin 3.3V,
  • Pin-8,9: GND – Digital Ground of PCB,
  • Pin-13: UART_RxD,
  • Pin-14: UART_TxD,
  • Pin-15: UART_CTS {Clear To Send}.

RN4871 Click – Spheres of a Typical Application:  

  • Health Care Devices,
  • Medical Devices,
  • Fitness Meters
  • Sport Activity Meters,
  • Beacon Private Service and Beacon Application,
  • Internet of Things -IoT, 
  • OTA – Over-The-Air Remote Configuration, 
  • Sensor Tags,
  • Smart Devices,
  • Green Energy Projects.
  • Smart Home,
  • Wearable Accessories,
  • Industrial Control,
  • Home Remote Control,


Microchip Basic BTModule:

AMAZON.CO.UK Affiliate Link:  Microchip RN4871 Basic BTModule:


Don’t Stop Developing All-New Hardware Designs, Dear Hardware Enthusiasts! 


{ Source: Mikroelektronika }

Site: Mikroe.com



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