Rotating hearts LED display

“An unique gift for any romantic occasion” reads the advertisement from Ramseykits.com. It’s been a while since I built a hobby kit and the last one I built  years ago was the Flashing LED Sweetheart. This year the Rotating Hearts LED display was ordered. It’s a CANA kit, made in Canada and for $29.95 seemed slightly expensive over the $6.95  Flashing LED Sweetheart, but it has 2 double sided  circuit boards, 46 LEDs, and an assortment of resistors, transistors and capacitors.

Lets take a look:




You’ll need a soldering iron, rosin core solder (I can’t believe how expensive solder is now) , a set of nippers for clipping the leads flush to the boards, a small place to work and good lighting to identify the marking of the components, such as the color bands on the resistors.

The Rotating Hearts LED display Cana kit contains 2 instructions sheets. One general assembly guide sheet, and an assembly guide sheet specific to the Rotating Hearts LED display.

The general assembly guide sheet contains info on soldering tips, diagrams and instructions for mounting components, their orientation, and charts for reading component values. 

Unpack the kit and sort out the components, read through the instructions sheets before starting.

The circuit boards are  well laid out and marked for proper placement of components. Observe closely the parts that are polarity sensitive to avoid damaging them or resulting in inoperative results.

The assembly guide gives you the order to install components and as in the General assembly guide specific diagrams on component placement.


Neatness counts, avoid solder bridges and cut off the leads close to the board.




Double check all the components ,If all goes well when you apply power it should create a moving light display,

the speed adjustable through a trimmer potentiometer.



Kit building is fun and if you interested in electronics, educational. This Cana kit provides a schematic but no theory of operation.

The small parts and small solder pads gives you exercise of manual dexterity and if needed, troubleshooting skills.

Assembling kits also can make handmade gift that is special.

This Cana kit  provides a power jack for a wall wart power supply but I used a 9 volt battery for now.

Ramseykits.com has a wide assortment of kits and electronics.  

After the Valentine chocolates, flowers and dinner fade away, two hearts remain.

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