DIY Project: Blinky Badge

Share on facebook
Share on twitter
Share on linkedin

Blinky Badge is a 555 timer controlled vibrobot. It is powered by two coin cell batteries. The eyes of the bot have a breathing LED effect i.e The LED fades in and fades out. 

The 555 is a timer ic which causes the LED and the vibrating motor to go on and off at a particular time for short duration or in intervals which causes it to move like a bug.


1. Two LED’s with series current limit resistors

2. Two CR2032 Coin Battery or two CR2016 cells in a single 2032 holder

3. Vibration motor to move the honey bee.

4. 555 timer controls current flowing through transistor, resulting in “breathing LED” effect

5. Vibration motor intensity changes in sync with the LED effect.

6. Use 555 as astable multivibrator with minor mods (see schematic)

Recent Posts

Maker’s Asylum: “It was so much more than just face shields”

Gemma Coleman speaks to Maker’s Asylum, a community makerspace in India, to discuss their ethos of open innovation and their effort to create a million face shields

String Art- Do-It-Yourself

String art is a fun activity to make a colourful picture by wrapping thread or wool around the nails hammered into the woodblock. 

Woodwork workshop

Woodworking can mean something different to everybody. It’s an opportunity for a few to pick up a new skill, and for some others, it’s a stress buster.

The Next BIG Thing in the Future of Education

To be precise, the Fourth Industrial Revolution has contributed to blurring the lines between the physical, digital, and biological worlds. It's a fusion of advances in artificial intelligence (AI), Robotics, the Internet of Things (IoT), 3D Design, 3D Printing, and Drone building.