For MKS GEN L Compatible with 12864 LCD Display Support TMC2100 Motor Driver 3D Print Kits,Default NO5249

Features:

MKS GEN L:

1. Fully consider stability, heat dissipation, ease of use, continuous print reliability testing

2. Supported 3d printers include Prusa Mendel, ultimaker, printbot, makerbot, etc.

3. The maximum current is 2.5A. Up to 32 segments are supported.

4. 4-layer PCB board for better heat dissipation.

5. The internal resistance of the chip is smaller, the heat is lower, and the heat dissipation is better.

12864 LCD Display:

1. Use large screen, integrated SD card holder on the back. After the slice file is placed in the SD card, select the corresponding file on the LCD to print.

2. The product comes with an encoder, which can realize parameter adjustment and file selection printing.

3. Plug and play, but need to modify the firmware to support.

4. Support Chinese character library, modify Marlin firmware can display Chinese menu, modify method to study by itself

TMC2100 V1.3:

The best way to set the motor current is by measuring the voltage on the "Vref" pin (0-2.5V) and adjusting the voltage with the potentiometer. The maximum motor current is 1.77A RMS and is set via the 0.11Ohm sense resistors.

Irms = (Vref * 1.77A) / 2.5V = Vref * 0.71

Vref = (Irms * 2.5V) / 1.77A = Irms * 1.41 = Imax

Vref -> Voltage on Vref pin

Irms -> RMS (Root Mean Square) current per phase (Irms = Imax / 1.41) Imax -> Maximum current per phase (Imax = Irms * 1.41)

**Example:** A voltage of 1.0V on Vref sets the motor current to 0.71A RMS.

**Note:**

On some stepper motor drivers the maximum current (e.g. A4988) is set via Vref and on others the RMS current (e.g. TMC2100).The Trinamic drivers have an automatic thermal shutdown (at about 150°C) if the chip gets to hot.

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