KiCAD

A collection of 50 PCB design projects using KiCad, ranging from basic power supplies to advanced microcontrollers.

50 Projects in KiCad

Project 1: Fixed 5V Power Supply

A simple DC-DC regulator circuit that converts 7V-12V input into a stable 5V output.

Features:

• L7805 Linear Regulator
• GND Plane for heat dissipation and signal stability
• LED Indicator for power status

Project 2: Automatic Night Light

An automatic night light circuit that detects ambient light using an LDR and drives an LED using a BJT transistor switch.

Features:

• LDR + Potentiometer voltage divider for sensitivity control
• 2N3904 NPN BJT transistor switch
• LED Indicator for output

Project 3: 555 Timer LED Flasher

An astable multivibrator circuit built around an NE555 timer IC that continuously flashes an LED at a set frequency.

• NE555 Timer IC configured in astable mode for continuous square-wave oscillation
• Adjustable Timing Network using resistors and capacitor
• Power Supply Decoupling and control voltage filtering for stable operation
• LED Indicator Stage driven by current-limiting resistor