Electro Guruji
Published © CC BY-NC-SA

DIY 555 Adjustable Timer

Learn how to make a precisely adjustable timer with a variable delay from 1 - 100 seconds that uses the 555 IC.

EasyFull instructions provided162
DIY 555 Adjustable Timer

Things used in this project

Hardware components

Texas Instruments 555
×1
Adafruit 3KΩ Resistor
×2
Adafruit 10KΩ Resistor
×4
Adafruit 1MΩ Potentiometer
×1
Adafruit IN4004 Diode
×1
Adafruit Tactile Momentary Push Buttons
×2
Adafruit 5mm LED
×2
SparkFun 100uF Capacitor
×2
SparkFun 0.1uF (100nF) Capacitor
×1
SparkFun 2 Pin Screw Terminal
×1
SparkFun 3 Pin Screw Terminal
×1
SparkFun 12VDC Relay
×1
SparkFun 12VDC Adapter
×1
SparkFun SPDT Slide Switch
×1
Seeed PCB
×1

Hand tools and fabrication machines

Soldering Iron
Soldering Wire
Mini PCB Hand Drill + Bits
Wire Cutter
Wire Stripper
Soldering Helping Hands

Story

Read more

Schematics

555 Timer Circuit Schematic

Code

555 Timer PCB Board Layout

Credits

Electro Guruji

Electro Guruji

3 projects • 2 followers
DIY Electronics, Arduino, Robotics Projects

Comments

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