Tag Archives: power leds

Recommended Power-leds

DIY Color-Changing LED Coasters!

Here’s a cool set of DIY colo-changing LED coasters.  Basically, it runs on solar power, LEDs light up in red for hot drinks and blue for cold drinks.

Looks pretty simple to make, maybe a good idea for your next circuits projects.

Smart Coasters are cast-plastic coasters for your drink that light up red when you put a hot drink on top and light up blue with a cold drink. The design is fully analog– no microcontrollers and no programming– and they incorporate a solar cell so that the whole thing is hermetically sealed: wate

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DIY High Power LED Blinking Circuit!


Here’s a fun little DIY with high powered LEDs.

Now by the time that you start talking about blinking the high power LEDs– you shouldn’t be surprised if people start whipping out the heavy artillery: 555 timer chips, transistors, boost converters, microcontrollers, solid state relays, and/or dedicated LED driver chips. While each of those does have its place, sometimes it’s nice to have a simpler and much less expensive alternative.

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