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Specific functions are assigned to each of the pin, as shown in the table below. The PCF8574 and PCF8574A have a different set of addresses. Arduino Nano Pinout Description Arduino Nano Pinout contains 14 digital pins, 8 analog pins, 2 reset pins and 6 power pins.
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If you position each Jumper to the " - " side it will set to value Zero ( Picture 1 ) for the Address bit, and if you switch it to the " + " side, it will set One ( Picture 3 ) for the Address bit. To learn Arduino Nano pins it is necessary to understand the datasheet of the Atmega328P. /uno-rev3 d12 d11 d10 d9 d8 d7 d6 d5 d4 d3 d2 d1/tx d0/rx pc6 reset adc0 adc1 adc2 adc3 adc4 adc5 pc0 pc1 pc2 pc3 pc4 pc5 d19/scl d18/sda aref gnd d13 pc5 pc4 pb5 pb4 pb3 pb2 pb1 pb0 pd7 pd6 pd5 pd4 pd3 pd2 pd1 pd0 scl sda sck cipo copi ss a5 a2 a1 a0d14 d15 a2 d16 d17 d18 d19 a0 a1 a3 a4 a5 ioref nc +3v3 +5v. For example, if you connect to pin 3, use digitalPinToInterrupt (3) as the first parameter to attachInterrupt (). Normally you should use digitalPinToInterrupt (pin) to translate the actual digital pin to the specific interrupt number.
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MOSI MISO CLK GND CS and 5V pins to the nano The Arduino with the I/O pin set as. The first parameter to attachInterrupt () is an interrupt number. 3V GPIO pin, then the pin labeled GND was connected to a ground pin (Fig. Arduino SPI Library I am performing spi between Arduino Due and Uno SPI. My PCF8574/PCF8574A GPIO Module has Jumpers that can be used to specify the I2C address. 128圆4 Yellow/Blue OLED for Arduino Nano, With TSL2591: You can build an.