The flexible microPlyer interpolation unit provides up to 256 , allowing perfect sinusoidal control even in systems with limited pulse frequencies; faster motor acceleration/deceleration than stealthChop, these are also designed because stealthChop2 is widely applied to 3D printing. Features - Color: As shown. - Material: PCB. - Size: 2.00X1.50X0.20cm/0.79X0.59X0.08in. - The operating mode of TMC2209 .0 stealthChop is almost silent. - TMC22209 driver has an improved stealthChop mode (stealthChop2), which works better at higher acceleration. - Compared with TMC2100, the resistance of TMC2209 output driver (RDSon) is slightly lower, thereby reducing power consumption. - Compatible with existing 3D printer electronics, with a standard step/ interface, it is easy to use. It can replace the original TMC2208, A4988, , LV8729, ­etc. - UART mode: TMC2209 support UART mode. With UART mode you can set , microstep easily via software. Package list: 1 x Stepper Motor Driver 1 x Heat Sink 1 x Screwdriver