STMicroelectronics STEVAL-IDI001V1

Overview

STEVAL-IDI001V1 from STMicroelectronics is an evaluation board built around the STM32F439IIH6 ARM® Cortex™-M4F MCU (180 MHz, 256 KB SRAM), integrated with a 9-axis IMU (LSM9DS1), pressure (LPS25HB), humidity/temperature (HTS221), UV index (UVIS25M), dual proximity/ambient light (VL6180X), and a 4-microphone PDM array (MP34DT01), targeting sensor hub development for wearable and IoT edge devices.

For engineers reviewing the STEVAL-IDI001V1 datasheet, STEVAL-IDI001V1 pinout, STEVAL-IDI001V1 application, or STEVAL-IDI001V1 equivalent, this board supports USB/Bluetooth data logging, Arduino/morpho expansion compatibility, real-time sensor fusion prototyping, and firmware development for low-power multi-sensor aggregation systems.

Technical Context

The board implements a tightly coupled sensor hub architecture: the STM32F439IIH6 executes sensor fusion algorithms via hardware-accelerated DSP instructions and FPU, while dedicated peripherals manage concurrent high-speed PDM microphone streams (via SAI), I²C/SPI sensor buses (with configurable CS lines), and USB FS/DFU for firmware updates and streaming. All sensors are pre-wired with appropriate level-shifting and filtering.

It features dual expansion interfaces-Arduino UNO R3 and ST morpho headers-enabling interoperability with STM32 Nucleo and X-NUCLEO boards (e.g., X-NUCLEO-IDB04A1 for BLE). The onboard adapter board bridges voltage domains and signal routing between heterogeneous expansion modules without external wiring.

Key Specifications

Availability

STEVAL-IDI001V1 is available at Aetrix Electronics and suitable for wearable health monitors, industrial predictive maintenance gateways, smart home environmental hubs, and academic sensor fusion research requiring stable component supply and rapid prototyping capability.

Supply support for STEVAL-IDI001V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, sensors, power ICs, and analog components for automotive, industrial, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series - purpose-built to accelerate development of sensor-rich embedded systems by integrating validated hardware, firmware, and documentation into a single reference platform.

FAQ

Does STEVAL-IDI001V1 support real-time sensor fusion out of the box?

Yes - it ships with preloaded firmware that acquires synchronized data from all onboard sensors (IMU, environmental, proximity, audio) and streams it via USB or stores it on microSD. ST provides open-source sensor fusion examples (e.g., orientation estimation using LSM9DS1 + HTS221) in its STM32Cube firmware package, compatible with the board's hardware abstraction layer.

Can I replace the onboard STM32F439IIH6 with another MCU?

No - the STM32F439IIH6 is soldered and not socketed. The board is designed as a fixed-hardware evaluation platform, not a modular carrier. However, its Arduino/morpho headers allow connection to external MCUs for host-side processing, while STEVAL-IDI001V1 acts as a dedicated sensor front-end.

Is the 4-microphone array calibrated for beamforming?

The four MP34DT01 microphones are physically arranged in a square layout (approx. 20 mm spacing) and share a common clock (MIC_CLK), enabling coherent PDM sampling. While no factory calibration data is included, the board's schematic and pin assignments align with ST's AN4772 and X-CUBE-AUDIO software packages, which provide reference beamforming libraries for this geometry.

What power sources does STEVAL-IDI001V1 accept?

The board accepts 5 V via USB Micro-B or 5–15 V via the VIN header. Onboard regulators generate 3.3 V (for MCU and digital sensors), 2.8 V (for VL6180X and UVIS25M), and 1.8 V (for SAI interface). Current draw peaks at ~350 mA during simultaneous sensor acquisition and USB streaming, as verified in ST's hardware user manual UM1914.