 Hello, and welcome to our video to get to know the EVAL-SP820XS, an evaluation board based on ST-SPIN820, one of the smallest and most precise stepper motor drivers available in the market. The EVAL-SP820XS board is compatible with the ramps shield. Ramps, combined with Arduino Due or MEGA, is an open source solution for fused filament fabrication 3D printing platforms, making it a fast and affordable way to develop innovative 3D printer applications. The EVAL-SP820XS is a perfect choice for users who want to experience high-resolution printing. The complete set will drive the 3D printer with limited requirements. One Arduino board that includes the microcontroller, one ramps board that has connectors to host a total of 5 daughter boards and 1-5 EVAL-SP820XS daughter boards. The EVAL-SP820XS board operates from 7 volts to 45 volts and delivers up to 1.5 amps RMS per phase. The board is extremely compact. The dimensions are 15 by 20 millimeters. The ST-SPEN820 device features a full set of protections including non-dissipative overcurrent, undervoltage lockout, thermal shutdown, and short circuit protections. The EVAL-SP820XS board works at a high microstepping resolution and the resolution can be easily set through jumpers on the ramps board. That values are available from full step to 1-256th of a step. It is simply controlled through step and direction ports. It embeds a PWM current control algorithm with selectable decay mode which can be either fast and slow or slow only. It has an adjustable reference current level through an embedded potentiometer. The EVAL-SP820XS daughter boards connect to the ramps with 16 pin connectors. A maximum of five boards can be hosted on the ramps. Each one is independent and can be easily plugged in for motor driving. The EVAL-SP820XS represents a cost effective and very fast drop in replacement solution. The motor driver, together with the microcontroller and the firmware, are at the heart of any fused filament fabrication 3D printer. Moreover, the surface finishing of the 3D printed objects has an unprecedented smooth aspect thanks to ST-SPIN 820-256 microstepping capability. With ST-SPIN 820's step clock input frequency at 4 MHz and its embedded high-performance PWM current control, it is possible to push the 3D printer to break through acceleration of 15,000 mm per second squared and speed at 500 mm per second. For more information, visit www.st.com-st-spin.