August 25 & 26, 2017
August 25-27, 2017
September 2 & 3, 2017
September 23 & 24, 2017
Nearly Every Weekend
Use a 555 timer to make an LED blink like the one in a security camera.
I got all the parts necessary for the project at my local RadioShack. You can get them cheaper somewhere else, I’m sure.
Here is it finished. I made this one about a week ago to test the circuit. So this one may differ a bit compared to the one we're going to build.
Here are the parts needed to complete the project.
Here is the schematic for the project.
Next we add the 10uF capacitor. Be aware of its positive and negative leads (negative should be facing down if the terminal is at the top).
Next come the rest of the resistors. The first is the 10k which goes closest to the capacitor. Then the 470 and 220 are joined together in series to make the equivalent of a 680k.
Solder all connections made so far.
After soldering all connections cut off the extra leads except for those on the capacitor and resistor.
Next connect pin 7 to the spot between the 10k and the 660k resistors.
Connect pins 6 and 2 together and then to the spot between the capacitor and 10k resistor.
If you connected everything correctly, connect your battery to the circuit and let it sit for a couple of seconds. It should start to blink every 5 seconds. If not, check for short circuits or misconnected leads.
If you have any questions or comments please post them and I will help with what is possible. Or, email me at [email protected]
Send us feedback on our site design, bugs, story ideas, maker community events and any other share-worthy thoughts.
We can't guarantee a response to each submission, but we promise to think about every one.
Stay inspired with the Make: newsletter
Make: and Maker Faire are registered trademarks of Maker Media, Inc. | Privacy | Terms
Copyright © 2004-2017 Maker Media, Inc. All rights reserved
you are now signed up to the Make: newsletter.
The latest news about startups, products, incubators, and innovators
Keep up with the Greatest Show(and tell) on Earth
How making is transforming learning
Thanks for signing up.
Your FREE PDF is on its way. Please check your email. You will also be receiving the weekly Make: Newsletter to keep you inspired with new projects and more product reviews.
Your changes have been saved. Keep Making!
Thanks for your submission. Our editors will review your materials and follow up with you via email as soon as possible. In the meantime, keep making stuff!
Make: is the voice of the Maker Movement, empowering, inspiring, and connecting Makers worldwide to tinker and hack. Subscribe to Make Magazine Today!
Stay inspired, keep making.