The installation of other equipment (such as limit switch, laser head) should be installed according to the actual situation.ġ) Install the grblmain library file and burn programĭownload and unzip grblmain.zip, and then replace config.h in grblmain folder, the new config.h: 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. The IRQ pin is optional and used only when the interrupt is required.Open Arduino IDE, choose File->Examples->grblmain->GRBLtoArduino, you’ll open a grbl sample program, select the port and board type, burn this grbl sample program to Arduino NANO.ĭownload and install Grbl Controller,open it, interface as shown in picture: Place the grblmain folder to libraries in Arduino IDE installation directory. As they are used to set the module in either transmitter or receiver mode. The CSN and CE can be connected to any digital pin of Arduino. Below are the SPI pins of some popular Arduino boards: Arduino Different Arduino boards have different SPI pins. The MOSI, MISO, and the SCK are the SPI ( Serial Peripheral Interface) pins and must be connected only to the SPI pins of Arduino. But the other pins of the module are 5V tolerant and can be connected to the Arduino pins directly. Since the operating voltage of the module ranges from 1.9 to 3.6V, you can connect the VCC pin to 3.3V directly. It gives us precisely 125 possible channels with 1MHz spacing i.e, (2525 – 2400)/1 = 125 channels. This channel frequency lies in the 2.4 GHz ISM band or between 2.400 to 2.525 GHz (2400 to 2525 MHz).Įach channel occupies a bandwidth of less than 1MHz. While connecting two or more transceiver modules to communicate with each other, they need to be on the same channel. The nRF24L01 transceiver module sends and receives the data on a certain frequency called Channel. Working of the NRF24L01 transceiver Module:
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