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LED heart using PWM fading

Posted on Friday, September 28th, 2012 in LEDs by the machinegeek


With grandma’s birthday fast approaching Chris from Pyroelectro decided to combine fading LEDs and a heart to He writes: “The concept for this small birthday present was to create a small heart shape with red LEDs and then to draw a heart shape underneath it on the PCB as a backdrop. Then a small processor was added to control the heart shape of LEDs for both fade and pattern control. The method of control that we use (PWM) allows us to save precious battery life, control the exact brightness of each specific LED and create this tiny but awesome project.”

A simple project using 16 5mm Red LEDs for the heart and a PIC 18F252 microcontroller for the processing that can come in handy whether for a birthday or Valentine’s Day.

Further details can be found at Pyroelectro.

Via the contact form.

This entry was posted on Friday, September 28th, 2012 at 3:00 pm and is filed under LEDs. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

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Recent Comments

  • Drone: Nice - but I'm most interested in the enclosure with the finger-leaf cover. Where did that come from? How to buy more?
  • Dave B: Got two of them. If you let the battery run flat, they don't charge! You have to pull the battery, and get enough charge in...
  • Bill F: My turn?
  • Chris: Ok!
  • Bob: Free PCB for me!