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Macbook logic board replacement rev1 or rev2 serial#

When the pin is HIGH value, the LED is on, when the pin is LOW, it’s off. LED: 13. There is a built-in LED connected to digital pin 13.SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). These pins support SPI communication using the SPI library.PWM: 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analogWrite() function.

See the attachInterrupt() function for details.

External Interrupts 2 and 3. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value.

Macbook logic board replacement rev1 or rev2 serial#

These pins are connected to the corresponding pins of the ATmega8U2 USB-to-TTL Serial chip. Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data.In addition, some pins have specialized functions: Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. Input and OutputĮach of the 14 digital pins on the Uno can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. It also has 2 KB of SRAM and 1 KB of EEPROM (which can be read and written with the EEPROM library). The ATmega328 has 32 KB (with 0.5 KB used for the bootloader). A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V. IOREF. This pin on the Arduino board provides the voltage reference with which the microcontroller operates.3V3. A 3.3 volt supply generated by the onboard regulator.

Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. The board can be supplied with power either from the DC power jack (7 – 12V), the USB connector (5V), or the VIN pin of the board (7-12V).

5V.This pin outputs a regulated 5V from the regulator on the board.

You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.

VIN. The input voltage to the Arduino board when it’s using an external power source (as opposed to 5 volts from the USB connection or another regulated power source).

If using more than 12V, the voltage regulator may overheat and damage the board. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. The board can operate on an external supply of 6 to 20 volts. Leads from a battery can be inserted in the GND and Vin pin headers of the POWER connector. The adapter can be connected by plugging a 2.1mm center-positive plug into the board’s power jack. The power source is selected automatically.Įxternal (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or battery. The Uno R3 can be powered via the USB connection or with an external power supply. It contains everything needed to support the microcontroller simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started. It has 14 digital input/output pins (of which 6 can be used as PWM outputs) 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. The Arduino Uno R3 with Cable is a microcontroller board based on the ATmega328 ( datasheet).