STMicroelectronics EVALKIT-ROBOT-1

Overview

EVALKIT-ROBOT-1 from STMicroelectronics is a compact reference design kit for robotics and automation, integrating an STSPIN32F0A 3-phase motor controller with embedded Cortex-M0 MCU, STL7DN6LF3 dual N-channel MOSFETs (60 V, 35 mΩ), Hall sensors, 1024-pulse incremental encoder, and a maxon EC-i 40 brushless DC motor (36 V, 100 W, 207 mNm nominal torque). It delivers closed-loop Field-Oriented Control with MODBUS/RS-485 communication on a 40 mm × 40 mm board.

For engineers reviewing the EVALKIT-ROBOT-1 datasheet, EVALKIT-ROBOT-1 pinout, EVALKIT-ROBOT-1 application, or EVALKIT-ROBOT-1 equivalent, this kit serves as a validated servo drive platform for rapid prototyping of precision position/speed control systems in collaborative robots, automated guided vehicles, and industrial actuators - with full schematic, BOM, and firmware-ready architecture.

Technical Context

The kit implements a complete servo drive stack: the STSPIN32F0A executes real-time FOC algorithms using three-phase current sensing (via 0.1 Ω shunts and op-amp gain = 15), Hall-effect rotor position feedback, and PWM-driven power stage with integrated bootstrap circuitry. Motor phase voltage is regulated via VM input (12–45 V), while logic rails are internally generated (3.3 V LDO + 12 V regulator).

Communication is handled by a STR485 transceiver supporting 20 Mbps RS-485 differential signaling (±12 V common-mode range) and MODBUS RTU protocol; encoder interface accepts differential quadrature A/B/I signals (±7 V common-mode) at up to 30 krpm, synchronized with Hall sensor inputs for hybrid commutation modes.

Key Specifications

Availability

EVALKIT-ROBOT-1 is available at Aetrix Electronics and suitable for robotics prototyping, automated motion control validation, and industrial servo system development requiring stable component supply and production-representative reference hardware.

Supply support for EVALKIT-ROBOT-1 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

EVALKIT-ROBOT-1 belongs to ST's motor control evaluation platform family, engineered to accelerate adoption of intelligent, high-efficiency BLDC servo drives in collaborative robotics and precision automation - with pre-validated hardware, open-source firmware examples, and comprehensive documentation.

FAQ

Does EVALKIT-ROBOT-1 support encoder-only operation without Hall sensors?

Yes. The STSPIN32F0A firmware supports pure quadrature encoder-based FOC, with Hall sensors used optionally for startup alignment or sensor-fusion mode. Encoder signals (A+, A−, B+, B−, I+, I−) connect directly to dedicated differential inputs on the controller, independent of Hall channels.

What is the maximum continuous motor current supported by the power stage?

The board sustains 3 A DC continuous current per phase under typical thermal conditions (measured at 25 °C ambient, no forced airflow). Peak current capability is 6 A per phase, limited by MOSFET SOA and PCB copper area - actual limits depend on heatsinking and duty cycle.

Can the MODBUS interface be reconfigured for ASCII mode or custom register mapping?

Yes. The onboard Cortex-M0 runs configurable MODBUS RTU firmware (source code provided in ST's X-CUBE-MCSDK), allowing register map customization, baud rate selection (up to 20 Mbps), and optional ASCII mode implementation via UART software stack modification.

Is debug access available for the STSPIN32F0A MCU?

Yes. SWD debug interface is exposed via PA13 (SWDIO) and PA14 (SWCLK) pins on the board's test points (TP13, TP14), compatible with ST-LINK/V2 and other ARM Cortex debug probes - enabling real-time firmware inspection, breakpointing, and parameter tuning.