Then restart the IDE and try to run the code. The Seeeduino mega board does wire these 16 extra pins to an additional connector, but because the Arduino core software does not map these pins one has to use direct port access commands to mode/read/write to these pins. This tells the IDE there are now 71 useable pins not 70. (4) at the to, change this: #define NUM_DIGITAL_PINS 70 ![]() This specifies that it is not a PWM output (which it is not) (3) at the end of this: const uint8_t PROGMEM digital_pin_to_timer_PGMĪdd this: NOT_ON_TIMER, // PJ 2 ** 70 ** D70 This specifies a bit mask for this pin in its port (In this case it is the bitmask for pin 2) (2) at the end of this: const uint8_t PROGMEM digital_pin_to_bit_mask_PGMĪdd this: _BV( 2 ), // PJ 2 ** 70 ** D70 This specifies which port the pin is on (in this case J) (1) at the end of this: const uint8_t PROGMEM digital_pin_to_port_PGM Step 9: Complete Arduino and the 128×64 Graphic LCD connection overview. Step 7: LCD controller power supply and LED backlight connection. In order to get a new pin to work, you need to do a several steps: Step 5: SPI Chip select connection between the LCD and the Arduino UNO. Plug in your arduino and see what com port changes. To do this, ensure your arduino is unplugged and open device manager from Start, Control panel, System, device manager. You don't need to worry about those lines unless you plan to use PJ2 as a pin change interrupt. The first thing you need to do is find out what com port your arduino is connected to. As they are used to set the module in either transmitter or receiver mode. ![]() Crystal : It has a crystal circuit with two capacitors and one 16 Mhz crystal for xtal pins 1 and 2 interfacing with avr 2560. ![]() A push button is used to get 4 cycle low signal on reset pin to get the controller in reset mode. Reset : It has reset circuit with capacitor, button and resistor to reset the controller. Arduino Mega: 51: 50: 52: The CSN and CE can be connected to any digital pin of Arduino. Arduino Mega ICSP Pinout for ATmega 2560. NRF24L01 is a single-chip radio transceiver that uses the 2.4-2.5 GHz ISM band world-wide. It compiles and all, but I don't get a blink yet. The Arduino Mega is a microcontroller board based on the ATmega1280 (datasheet). I've added lines at the end of each of those three areas you mentioned. So for now, I'll try just adding a pin 70, on PJ2, the unused pin 65 on the chip.
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