The Raspberry Pi Zero W 1.1 Pinout is an essential piece of information for anyone looking to harness the incredible potential of this ultra-compact single-board computer. Understanding this pinout is your key to unlocking a world of creative projects, allowing you to connect sensors, actuators, displays, and much more to your tiny Pi.
Decoding the Raspberry Pi Zero W 1.1 Pinout
The Raspberry Pi Zero W 1.1, like its larger siblings, features a General Purpose Input/Output (GPIO) header. This header is a collection of pins that allow your Raspberry Pi to interact with the physical world. Each pin can be programmed to perform specific functions, such as sending signals to turn on an LED, reading data from a temperature sensor, or communicating with other electronic components. The "W" in Zero W signifies built-in wireless connectivity (Wi-Fi and Bluetooth), but the pinout itself focuses on the physical connections available for your hardware projects.
The Raspberry Pi Zero W 1.1 boasts a 40-pin GPIO header, though not all pins are directly accessible or usable for all purposes. These pins can be broadly categorized into several types, each with its own role:
- Power Pins: These provide the necessary voltage to power your Pi and connected components. Common ones include 5V, 3.3V, and Ground (GND) pins.
- General Purpose Input/Output (GPIO) Pins: These are the workhorses, capable of being configured as either inputs (to read signals) or outputs (to send signals). They are numbered from 0 to 27.
-
Communication Pins:
These pins facilitate serial communication protocols, which are vital for connecting to a wide range of peripherals. Key examples include:
- SPI (Serial Peripheral Interface)
- I2C (Inter-Integrated Circuit)
- UART (Universal Asynchronous Receiver/Transmitter)
- Special Function Pins: Some pins have dedicated functions, such as those for the camera interface (CSI) or display interface (DSI), although these are often unpopulated on the Zero W and require soldering on a header.
Here's a simplified look at some of the key pin functionalities. The precise configuration and usage of these pins are critical for the success of any project.
| Pin Number (Physical) | GPIO Number | Function |
|---|---|---|
| 1 | - | 3.3V Power |
| 2 | (SPI MOSI) | 5V Power |
| 3 | GPIO2 | I2C SDA |
| 4 | - | Ground |
| 5 | GPIO3 | I2C SCL |
| 6 | - | Ground |
| 17 | GPIO0 | SPI CE0 (Chip Enable) |
| 18 | GPIO17 | (PWM) |
To get the most out of your Raspberry Pi Zero W 1.1, familiarize yourself with its pinout. The details provided in the section after this paragraph will be your indispensable guide.