BLE P click carries the nRF8001 IC that allows you to add Bluetooth 4.0 to your device. The click communicates with the target board MCU through mikroBUS™ SPI (CS, SCK, MISO, MOSI), RDY and ACT lines, and runs on 3.3V power supply.
clicker 2 for STM32 is a compact dev. kit with two mikroBUS™ sockets for click board connectivity. It carries an STM32F407VGT6, a 32-bit ARM® Cortex™-M4 microcontroller, with a built-in USB-HID bootloader that makes it easy to program.