Ultimate Guide to Raspberry Pi : Tips, Tricks and Hacks

🐍 Pi Ultimate Guide

A hands-on collection of Raspberry Pi GPIO & camera mini-projects in pure Python

Fork note
This is a fork of the original work by @leeassam.
I (Hari Aditya) have kept the code unchanged while refreshing the documentation and adding clearer setup steps.

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What you’ll find here

Folder	Mini-project	What it shows you
blink_led	Blink an LED	GPIO pin numbering, output mode, cleanup
button_press	Read a push-button	Pull-up / pull-down resistors, debouncing
button_press_led	Button-controlled LED	Combining input & output, event callbacks
pir_sensor	Detect motion	Reading HC-SR501 PIR sensor data
pir_sensor_alarm	Motion alarm	Triggering a buzzer / LED on motion
cameras	Capture photos & video	PiCamera vs. libcamera, image formats
setup_headless_mode	Headless Pi setup	Enable SSH, set Wi-Fi, no HDMI required

Each folder contains a single, well-commented Python script that can be run standalone.

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Hardware you’ll need

• Raspberry Pi (3/4/5 or Zero W) with Raspbian/Raspberry Pi OS
• Solderless breadboard & jumper wires
• Basic kit parts
  • 5 mm LED + 330 Ω resistor
  • Tactile push-button
  • HC-SR501 PIR motion sensor
  • Active buzzer (for alarm example)
• Optional
  • PiCamera v2 or HQ Camera for cameras demo

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Quick-start 🏁

1. Enable GPIO & camera

   sudo raspi-config
   # ‣ Interface Options → SSH, I²C, Camera (enable)