Two-phase stepping motor single-phase current 2A ( 2.5A) motor working current can be adjusted; Support SPI interface control mode; Motor input voltage range: 4.75-46V; The logic interface input voltage is: 3-5V; subdivided into 256 Noise-free operation combined with maximum efficiency and best motor torque; High- sensorless motor load detection; Reduce energy consumption by 75%, High load drive without losing a step TMC2130 is a high-performance two-phase stepper motor driver chip with a standard SPI interface and a simple step/dir interface. The continuous output current is up to 1.2A, and it can withstand a current of 2A in a short period of time, with extremely low noise, and high load driving without losing steps. The SPI working mode of TMC2130-V1.1 can directly select current, drive subdivision, and other parameters through the firmware, making these parameters more accurate; the use of an external sequencer greatly reduces the workload of the chip and effectively avoids the overload of the chip due to the workload. Problems caused by deviations, lost steps, faults, etc. Drive current algorithm and adjustment 1. Vref measures the voltage between GND and the potentiometer. 2. When measuring the voltage, the power supply should be turned on. Don' just connect the USB power supply. 3. When measuring voltage, be sure not to connect the motor, otherwise, be burnt easily. 4. Drive current algorithm: i-Vref * 1.9/2.5, the default Vref is about 1V, so the default current is 0.76A, and the maximum current is 2A! Please pay special attention to the direction and do not plug it in reverse! Color: Black Material: PCB Package Contents: 1 * module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.