Feature #1
Audio Analysis

Four MEMS microphones for beamforming, source localization and echo cancelation.

Feature #2
STM32 core

Easy firmware development with the wide selection of tools available for the most popular microcontroller.

Feature #3
Multi interface & LED

BLE, USB and serial interfaces allow to interact with this product accelerator in a wide and easy modes using several protocols. The presence of a white power LED expand the functionalities and the possible applications that can be developed with PA191.

Feature #4
Small form factor

Coin form factor with 26mm of diameter make PA191 a super integrated and miniaturized electronics board.



STMicroelectronics, Monolitich Power System MPS, CREE

Technology core




CPU ARM Cortex-M7 216MHz
512 kB RAM

Wireless connectivity

Bluetooth LE module SPBTLE-RF

Sensors and functionalities

4 x MP34DT06J MEMS microphones
XQEAWT-00-0000-00000LDE4 LED XLAMP NEUTRAL WHT 4500K 0606 (111 lm)
PWM output for external digital serial LED (NEOPIXEL)
UART for external programming
External power supply for CREE power LED

Wired connection


Form factor

26mm diameter


JTAG standard for ST-Link or J-Link debuggers


STM32 family of 32-bit Arm® Cortex® core-based microcontrollers and microprocessors are supported by a comprehensive set of software tools.

Traditional integrated development environments (IDEs) with C/C++ compilers and debuggers from major 3rd-party suppliers (free versions with up to 64 Kbytes of code are available) as well as the embedded software libraries required to configure and initialize the MCU or MPU and monitor its behavior in run time.

STM32CubeMX is a graphical tool used to configure any STM32 device. This easy-to-use graphical user interface generates the initialization C-code for Cortex-M cores and generates the Linux Device Tree for Cortex-A cores.

STM-STUDIO and STM32CubeMonitor-Power are monitoring tools that help developers fine-tune the behavior of their applications at run time.

An all-in-one multi-OS software tool, STM32CubeProgrammer provides an easy-to-use and efficient environment for reading, writing and verifying device memory through both the debug interface (JTAG and SWD) and the bootloader interface (UART and USB).

Enhanced STM32Cube tools simplify setting up MPU and MCU projects and configuring the on-chip resources. They accelerate the development of microcontroller- and microprocessor-based projects.

The software SDK and the specific audio algorithms developed for PA192 are available under license from FAE Technology.

Services offered by FAE Technology

  • Custom design and production of electronics
  • Custom software development
  • Custom creation of the box