Mostra la font per a Fent servir protocols de comunicacions a la placa S4A basada en Arduino Nano

= Introducció =
[https://wiki.binefa.cat/index.php?title=%C3%8Dndex_general#S4A_Programming_Learning_Board Informació general i enllaços sobre la placa S4A]

= UART =
[https://github.com/jordibinefa/arduino-IDE-codes/tree/master/s4a_softwareSerial s4a_softwareSerial]

= I2C =
[https://github.com/jordibinefa/arduino-IDE-codes/blob/master/s4a_i2c_scanner/s4a_i2c_scanner.ino s4a_i2c_scanner]

== Expansor digital d'entrades i/o sortides PCF8574 ==
[https://github.com/jordibinefa/arduino-IDE-libraries/tree/master/PCF8574/examples Exemples d'ús]

== OLED ==
[https://github.com/jordibinefa/arduino-IDE-codes/blob/master/s4a_pwm_01/s4a_pwm_01.ino s4a_pwm_01]

= SPI =
== RFID - MFR522 ==
[https://github.com/jordibinefa/arduino-IDE-libraries/tree/master/MFRC522/examples/ReadNUID ReadNUID]

[https://github.com/jordibinefa/arduino-IDE-libraries/blob/master/MFRC522/doc/fritzing/Arduino-Uno-r3-with-RFID-RC522.png Diagrama de connexions]

== Between Two Arduino ==
[https://binefa.cat/blog/?p=282 SPI – Sample of master and slave using two Arduino]

= ModBUS =
[https://github.com/jordibinefa/arduino-IDE-codes/blob/master/s4a_modbusRTU_rs485_01/s4a_modbusRTU_rs485_01.ino s4a_modbusRTU_rs485_01]