What is GPIO in Raspberry Pi?

GPIO stands for General Purpose Input Output. The Raspberry Pi has two rows of GPIO pins, which are connections between the Raspberry Pi, and the real world. Output pins are like switches that the Raspberry Pi can turn on or off (like turning on/off a LED light). But it can also send a signal to another device.

What is SDA and SCL pins in Raspberry Pi?

The Raspberry Pi has two I2C connections at GPIO 2 and 3 (SDA and SCL) are for I2C0 (master) and physical pins 27 and 28 are I2C pins that enable the Pi to talk to compatible HAT (Hardware Attached on Top) add on boards.

What are GPIO pins in Raspberry Pi and explain types of pins?

GPIO pins are standard general-purpose pins that can be used for turning external devices, such as an LED, on or off. 5V and 3V3 pins are used to supply 5V and 3.3V power to external components. I2C pins are used for connecting and hardware communication purposes with I2C compatible external modules.

What GPIO means?

General Purpose Input/Output
General Purpose Input/Output (GPIO)

What is GPIO and how it works?

A general-purpose input/output (GPIO) is an uncommitted digital signal pin on an integrated circuit or electronic circuit board which may be used as an input or output, or both, and is controllable by software. GPIOs have no predefined purpose and are unused by default.

How do I read GPIO pins?

The basic steps to use a GPIO pin from the sysfs interface are the following:

  1. Export the pin.
  2. Set the pin direction (input or output).
  3. If an output pin, set the level to low or high.
  4. If an input pin, read the pin’s level (low or high).
  5. When done, unexport the pin.

What is GPIO functionality?

A GPIO (general-purpose input/output) port handles both incoming and outgoing digital signals. As an input port, it can be used to communicate to the CPU the ON/OFF signals received from switches, or the digital readings received from sensors.

What are GPIO connectors called?

Re: Name of GPIO connector The black connectors are called Insulation Displacement Connector or IDC. The RPi uses 40 pin with 0.1 inch (2.54mm) pitch.