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February 14, 2015 AT 12:30 am

DIY LED Heart #ValentinesDay

Make an LED heart for your Valentine. via instructables

In this article I will try to tell you about the gift I made for my girlfriend!

I got her is an LED heart.

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STEP 1:
The basis of the scheme is a microcontroller Atmega8, 1K resistor, selected in such a way as not to overload the microcontroller ports. SMD resistors and diodes, size 1206.

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Step 2:
On the reverse side of the board, there are two batteries CR2032, two capacitors, voltage regulator LM7805, and the power button with latching.

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Step 3:
In order to fill in the microcontroller firmware, you need to solder the wires to the pads on the board. Around the microcontroller pins are derived for spi interface (MOSI MISO SCK RESET). The firmware can be downloaded here.

Step 4:
Picture of

To formalize the a scheme which I soldered, I placed it in a wooden frame, and make the background and glued two small ladybugs. Valentine’s Day is approaching, a gift sure to enjoy your loved ones people!

Download files PCB and firmware for the microcontroller can be here!

Full tutorial


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