Shorten Stepper Wires
Use wire cutters to reduce the length of the four wires from the stepper motor to be 7in (18cm) in length.
Use wire strippers to remove a bit of insulation from each of the wires. Then, apply a bit of solder to tin the tips of the exposed strands of wire.
Current Limit on TMC2209
Use a small flat head screw driver to adjust the potentiometer on the TMC2209 stepper driver.
Rotate the potentiometer counter-clockwise so the position matches the photo.
This will limit current to the stepper motor which will reduce the overall heat of the motor while it's operating.
Wires for TMC2209
Use the 26AWG wires to create seven different connections for the TMC2209 stepper driver. Use different colored wires and make them approximently 4.5in (11.5cm) in length.
Use wire strippers to remove a bit of insulation from both ends of each wires. Then, apply a bit of solder to tin the tips of the exposed strands of wire.
Connect Wires to TMC2209
Solder the wires to the following pins on the stepper motor driver.
- VDD
- GND
- DIR
- STEP
- MS1
- MS2
- EN
Connect Wires to KB2040
Solder the wires from the TMC2209 driver to the following pins on the KB2040 dev board.
- VDD to 3V
- GND to G
- DIR to 5
- STEP to 6
- MS1 to 2
- MS2 to 3
- EN to 4
Wires for MPM3601 and DC Jack
Prep six more wires for the DC barrel jack and MPM3601 buck converter. These can be 4.5in (11.5cm) in length.
Use wire strippers to remove a bit of insulation from both ends of each wires. Then, apply a bit of solder to tin the tips of the exposed strands of wire.
Solder Wires to MPM3601
Solder the wires to the following pins on the MPM3601 buck converter.
- GND
- 5V
- VIN
Solder MPM3601 to KB2040
Solder the following wire connections to the KB2040 dev board.
- GND to GND
- 5V to RAW
Mount DC Jack
Secure the DC jack to the 3D printed mount before making any wired connections.
Use the included hex nut to secure the DC jack to the 3D printed mount.
Solder Wires to DC Jack
Solder two black wires to the ground terminal (pin on the far side) on the DC jack.
Solder two of the red wires to the voltage terminal (the large pin in the center) on the DC Jack.
Solder DC Jack to KB2040
Solder the following wires on the DC jack to the KB2040 dev board.
- GND to GND
The remaining wires on the DC jack will be connected to the TMC2209 stepper motor driver.
Page last edited January 28, 2025
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