MKR SharkyPro Boards Packs STMicroelectronics’ STM32WB55CG into an Arduino MKR Form Factor

MKR SharkyPro Boards Packs STMicroelectronics’ STM32WB55CG into an Arduino MKR Form Factor

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In the midst of discovering wireless modules that simplify Bluetooth LE, Zigbee, OpenThread connectivity, it turned out that Midatronics also has a SharkyPro module based on STM32WB55, and they have launched a pair of Arduino MKR form factor development boards called MKR SharkyPro I & II.

The Sharky MKR boards are built around the SharkyPro module that has STMicroelectronics’ STM32WB55CG/CE MCU with a 64 MHz Arm® Cortex®-M4 core serving as the application processor and a 32 MHz Arm® Cortex®-M0+ core as the network processor. They are also Bluetooth 5.0-certified with support for Mesh 1.0 software, proprietary BLE stacks, OpenThread software, and other IEEE 802.15.4 proprietary stacks like ZigBee ® , or proprietary protocols.

Key Features and Specifications SharkyPro I & II include:

  • SharkyPro Wireless Modules
    • STMicro STM32WB55CG/CE wireless MCU with an Arm Cortex-M4 core @ 64 MHz and an Arm Cortex-M0+ core @ 32 MHz; 512KB flash; 256KB SRAM
    • 2.4 GHz – RF transceiver
    • Bluetooth 5.0 Low Energy, Bluetooth Mesh 1.0, OpenThread, Zigbee, General IEEE 802.15.4 protocol stacks
    • Onboard chip antenna (for SharkyPro I)
    • SMA antenna connector (for SharkyPro II)
    • 3.3V supply voltage
    • 13 nA consumption in shutdown mode
    • 600 nA consumption in Standby mode + RTC + 32 KB RAM
    • Operating temperature: -40 °C to 85 °C
    • RX Sensitivity: -96 dBm
    • Dimensions: 23 mm x 14.6 mm
  • 1x Micro USB port for power and programming
  • 2x 14-pin headers compatible with Arduino MKR pinout and featuring USART, ADC, SPI, I2C, QSPI
  • 1x 8-pin SWD connector
  • 1x Reset button
  • 1x User-programmable input button
  • User LED
  • Power Supply: 5V via Micro USB port, 2.5 to 5.5V via Vin pin, 2.0 to 5V via Vbatt pin (battery)
  • Dimensions:
    • MKR SharkyPro I – 63 mm x 25 mm
    • MKR SharkyPro II – 72.5 mm x 25mm

SharkyPro I & II have the same specifications but can be distinguished by whether they have an on-board chip antenna or an SMA connector for an external header. If it’s the former, it is the MKR SharkyPro I but if it is the latter, it is the MKR SharkyPro II. Also, when it comes to size, SharkyPro II is also a little bigger than the SharkyPro I.

The two boards are breadboard-friendly and are designed to be pin-compatible with Arduino’s MKR boards. You can use Arduino IDE to program the boards or the SWD header alternatively, via an STLink in-circuit debugger and programmer alongside SW4STM32, Atollic, IAR, or Keil IDE.

The boards and the module are currently available but nothing about their prices has been disclosed publicly. Other details however are available on the product pages for the development board and the module.

About Emmanuel Odunlade
Email : emmaodunlade@gmail.com Website :

Hardware Design Engineer | #IoT Consultant |All things #ML | Entrepreneur | Serial Writer | Passionate about Innovation and technology as tools for solving problems in developing countries. Spare time is spent around writing and advocacy for the growth of the Maker/DIY Culture in Africa.

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