 Hello everyone, I want to present you the cordless grinder demo based on the ST-Eval P-Tool 1v1 reference design. This demo shows how the board can be used for making a prototype of power tool in a few steps. The board is a very compact solution. In 70x30mm you have everything needed to drive a brushless motor with a DC current up to 50A. The key components of the board are the ST-SPIN32F0B vet embeds microcontroller, power management and gate driving and the F7 MOSFETs with very low on resistance and excellent switching characteristics. First step for building your prototype is to select the battery pack fitting your needs. The board is designed to operate with two series to six series lithium cell batteries. In our demo we selected 18V battery pack. The battery is connected to the board soldering the wires to J1 and J2. Then connect the old sensor providing the position feedback of the motor to the J7 strip on the board. Motor phases must be soldered to J4, J5 and J6 connector taking care of the phase sequence. Last step, connect the star stop button. Now your power tool prototype is ready for your evaluation. Without the need to design your own board you can check the system performance, tune the power stage and play adding new functions starting from our source code. Detailed documentation about the board, the firmware and ST-SPIN32F0B are available on ST.com.