X-NUCLEO-IHM15A1 DC Motor Driver Expansion Board STMicroelectronics X-NUCLEO-IHM15A1 DC Motor Driver Expansion Board is based on the STSPIN840 for STM32 Nucleo. The X-NUCLEO-IHM15A1 is an easy-to-use solution for implementing compact motor driver applications like thermal printers, robotics and toys. The board can be easily converted to a single brush DC driver with double current capability thanks to parallel operation. The current limiters and complete set of protection features make it suitable for rugged applications. The X-NUCLEO-IHM15A1 is compatible with the Arduino UNO R3 connector and most STM32 Nucleo boards.