STMicroelectronics STEVAL-GPT001V1

Overview

STEVAL-GPT001V1 from STMicroelectronics is a wearable development kit comprising a silicon strap-mounted SensorTile cradle, SPV1050TTR ultra-low-power energy harvester with MPPT and dual LDOs, HTS221 humidity/temperature sensor, STC3115 gas gauge, 3.7 V / 100 mAh Li-Po battery, micro-USB port, SWD debug interface, and thin-film solar modules optimized for indoor light harvesting.

For engineers reviewing the STEVAL-GPT001V1 datasheet, STEVAL-GPT001V1 pinout, STEVAL-GPT001V1 application, or STEVAL-GPT001V1 equivalent, this kit enables rapid evaluation of energy-autonomous BLE sensor systems leveraging STM32L4 + BlueNRG-2 architecture, indoor solar harvesting efficiency, battery state-of-charge estimation, and MEMS environmental/motion sensing integration.

Technical Context

The cradle integrates SPV1050TTR to condition photovoltaic input (0.2–5 V, up to 16 mA), regulate VSTORE (up to 4.2 V) and VDD (3.3 V), and manage charging via programmable current (100 mA default). It interfaces directly with the removable STEVAL-STLCS01V1 SensorTile module via 18-pin 0.4 mm pitch connector supporting I²C, SPI, UART, SWD, and analog microphone clock.

Power management includes real-time battery voltage monitoring, NTC-based temperature sensing for charge safety, and autonomous wake-up on motion or environmental triggers via SensorTile's embedded STM32L476RG and BlueNRG-2. Firmware support spans STSW-GPT001V1 (autonomy modeling), FP-SNS-ALLMEMS1 (sensor fusion), and STBLESensor mobile apps.

Key Specifications

Availability

STEVAL-GPT001V1 is available at Aetrix Electronics and suitable for wearable health monitors, industrial predictive maintenance sensors, smart building occupancy trackers, and energy-autonomous IoT edge nodes requiring stable component supply and long-term design-in support.

Supply support for STEVAL-GPT001V1 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 wireless solutions for industrial, automotive, and consumer applications.

This kit belongs to ST's SensorTile ecosystem - a modular, ultra-low-power development platform built around the STM32L4 MCU and BlueNRG-2 BLE SoC, specifically engineered for battery- and energy-harvesting-powered compact sensor nodes.

FAQ

Does STEVAL-GPT001V1 include the SensorTile module?

No. The STEVAL-STLCS01V1 SensorTile module is not included and must be purchased separately. The cradle board features a dedicated 18-pin footprint and mating connector to host it, enabling plug-and-play integration with its STM32L476RG MCU, BlueNRG-2 BLE processor, and full suite of MEMS sensors.

What solar cell types are compatible with the SPV1050TTR harvester on this board?

The SPV1050TTR supports amorphous silicon, dye-sensitized, and organic photovoltaic cells delivering 0.2–5 V open-circuit voltage and up to 16 mA short-circuit current. Its integrated MPPT algorithm dynamically tracks maximum power point under variable indoor lighting (e.g., 200 lux fluorescent) and direct sunlight conditions.

How is battery state-of-charge calculated on STEVAL-GPT001V1?

State-of-charge is computed by the STC3115 fuel gauge using hybrid coulomb counting and adaptive voltage modeling, calibrated for the 3.7 V / 100 mAh Li-Po cell. It outputs SOC with ±1 % accuracy across temperature and aging, accessible via I²C register reads or parsed in STSW-GPT001V1 firmware autonomy reports.

Can the SWD interface program both the SensorTile and SPV1050TTR?

The SWD connector and included cable program only the STM32L476RG MCU on the SensorTile module. The SPV1050TTR is configured via external resistors (RPROG, R30/R28, R29/R27) and has no firmware or digital programming interface - its MPPT, charging, and regulation functions are fully analog/hardware-defined.