I use cheap arduino rs485 module in the project. (The voltage regulator allows up to 18V input, however, we do not recommend exceeding 9V since the higher voltage can lead to overheating and damage to the device. Pin 8 of Arduino Mega and Arduino Pro Mini is used to control the RE(Receive Enable) and DE(Data Enable) pins of MAX485. Im using the following pinout diagram: Nothing else is connected to the arduino board yet. (first time I use this arduino board btw). The mini pro receives its voltage, and the power led is on, the other led blinks. The onboard voltage regulator operates in a range of 6V to 9V DC. However, when I connect the usbISP to the ICSP of my arduino mega, I can upload a sketch to the mega. I assumed your little Arduino had the same pins as my Pro Mini Uno. Also, as I always suggest, use decoupling capacitor at the 3.3v input pin of the module. Make sure you are using the correct SPI pins on the Arduino Mega. The Arduino Web Editor is hosted online, therefore it will always be up-to-date with the latest features and support for all boards. All Arduino boards, including this one, work out-of-the-box on the Arduino Web Editor, you only need to install Arduino Create Agent to get started. The board can be powered directly through the Micro USB connector, or via the corresponding contacts on the board (Vin and GND). Here’s a detailed look at the NRF24L01 pinout, as well as the NRF24L01+ PA/LNA module. Use your Arduino Mega 2560 on the Arduino Web IDE. Specifications Arduino Mega Schematic (official): Where to Buy Arduino Mega Arduino Mega Pinout (Detailed Board Layout) Arduino Mega 2560 has 54 digital input/output pins, where 16 pins are analog inputs, 14 are PWM pins, and 6 are hardware serial ports (UARTs). Description The Mega 2560 Pro with CH340 is compatible with the Arduino Mega 2560 but with a significantly reduced physical footprint for embedded applications. It has a Micro-USB connector (universally used by most phones, including Android smartphones) to connect the microcontroller to the computer via the CH340 USB-UART adapter (the CH340 driver may need to be installed on your computer).Ĭonnectivity to the computer is provided through the common micro USB connector. It uses the original ATmega2560-16AU chip, a 16 MHz high-quality quartz resonator, and the CH340G USB-UART interface. Mega transmits character ‘9’ on Serial Channel and then goes in receive Mode, Pro Mini Receives the character from serial line, check’s it if it is ‘9’. Initially Mega is in Transmit mode and Pro Mini is in Receive Mode. The Mega Pro Mini functionalities are identical to the Arduino Mega2560. RS485 Communication Between Arduino Mega & Arduino ProMini, Leonardo etc. It has a compact form factor of 54mm x 38mm (2.1″ x 1.5″) and is an excellent solution for developing embedded and stand-alone projects based on the ATmega2560. The MEGA2560 Pro Mini board is a low-cost, miniature version of the popular Mega 2560 microcontroller and is compatible with the Arduino Mega 2560.
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