You can reference for the following picture: As shown in picture:Īfter finished the above steps, you need to plug A4988 and Arduino NANO into CNC Shield V4.0, please ensure it’s the correct direction of A4988 and Arduino NANO, or it may burn your devices. In order to improve the precision of engraving, use 1/16 segment, it needs 3 jumper caps to cover MS0、MS1、MS2. Each segment is set by the MS0、MS1、MS2 pin header in the CNC Shield V4.0, cover the jumper cap to the pin header represents high level, do not cover the jumper cap represents low level.Įach segment is specified set as shown in the following table: MS1 We use A4988 as the motor driver, A4988 support 1 segment, 1/2 segment, 1/4 segment, 1/8 segment, 1/16 segment. The input voltage of CNC Shield V4.0 is DC 7.5V-12V, do not higher than 12V.
Also, CNC Shield V4.0 also has I2C interface, you can connect LCD screen which has the I2C interface.
There’re 3 slots in the board for stepper motor drive modules, can drive 3 stepper motors, and each step stepper motor only need two IO port, that is to say, 6 IO ports can quite well to manage three stepper motor, it’s very convenient to use.ĬNC Shield V4.0 has some GPIO of Arduino NANO, it’s convenient for connect other modules, like limit switch. CNC Shield V4.0 can be used as a drive expansion board for engraving machines and need to be used with Arduino NANO.
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