Specification Brand : Teyleten Robot BulletPoint1 : New Original German TMC2209-TA Chip,excellent mute effect BulletPoint2 : Input voltage: 5.5V-28V BulletPoint3 : Large heat sink, good heat dissipation BulletPoint4 : Support sensorless feedback function BulletPoint5 : Back function: Material break module with back function. After pressing the back , the computer does not need to interact with the page to return the material. Color : One Color Department : Unisex Adult ExternallyAssignedProductIdentifier : 8099839074209 ExternallyAssignedProductIdentifier1 : 0755454774471 ExternallyAssignedProductIdentifier2 : 755454774471 ItemName : Teyleten Robot TMC2209 V2.0 Stepper Motor Driver StepStick 2.5A UART Ultra Silent for Nano SKR V1.3/1.4 Ender 3 Control Board 3D Printer Parts Replace A4988 5pcs ItemPackageDimensions_Height : 14.3002 centimeters ItemPackageDimensions_Length : 3.7084 centimeters ItemPackageDimensions_Width : 9.2964 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-accessories Manufacturer : Teyleten Robot Material : Black ModelName : UMCNVV ModelNumber : G78-1 NumberOfBoxes : 1 NumberOfItems : 5 PartNumber : G78-1 ProductDescription : Features: Support Uart module by putting on jumper cap instead of soldering on mks gen_l V2.0, skr 1.3, 1.4.mks sgen_l Product settings: Default current 1.25A Maximum current: 2.5A Logic voltage: 3.3V/5V Input voltage: 5.5V-28V Microstep: up to 1, 256 Module: dir/step, uart Microstep settings: M0:GND:step 8 VCC_IO:step 32 GND:step 64 VCC_IO:step 16 M1: GND: step 8 GND: step 32 VCC_IO:step 64 VCC_IO:step 16 Operator's use precautions: 1.Verf measures the voltage of GND and potentiometer 2. Please do not link the motor when measuring the voltage. Otherwise it is easy to burn the drive 3. Please connect the power supply when measuring voltage. Don't just connect to USB power ProductSiteLaunchDate : 2021-07-30T17:17:00.654Z Size : One Size UnitCount : 1 UnspscCode : 26111500 Voltage : 5.5 volts