3 more projects using a 555 timer

Project

In this project you will learn how to build 3 different circuits using a 555 timer. Perfect for a beginner to learn about 555 timers.

Motor speed controller

This project will allow you to control the speed and direction of a motor.

The circuit uses a 555 timer to create a PWM signal that it the connected to a transistor to allow you to control larger motors. You can change the transistor to suit the current draw of the motor you are using. The direction of the motor can then be chosen by the DPDT switch.

Electronic dice

This project will generate a number on the dice at a press of a button.

This design uses a CD4017 in conduction with a 555 timer to display a random number every time the button is pressed. The LEDs will need to be placed in the configuration shown bellow so that it will show the correct number on the dice.

Transistor tester

This circuit will test a transistor to see if it is PNP or NPN.

To use the tester just simply insert a Transistor into the header and power up the device. If it is NPN the red led will light up if the blue LED lights up it is PNP.

Acknowledgement

I thank PCBWay & LCSC Electronics for the partnership.

PCBWay Is a cheap reliable service where you can get your PCBs manufactured. All the PCBs are high quality and the engineers are very helpful and will resolve any problems you may have quickly. Sign up today and get a $5 welcome bonus. Check Out PCBWay Hackster page.

LCSC Electronics Is China's leading Electronic Components Distributor. LCSC sells a wide variety of high quality electronic components at low prices. With over 150, 000 parts in stock they should have the components you need for your next project. Sign up today and get $8 off on your first order.

Website

Check out more of my other projects on my website.