• Create an electronic greeting card with this kit
• Use a resistor, LED, LDR, transistor and conductive paint to build your circuit
• Learn about electronics and conductivity
• With eight parts it’s simple and fun to assemble with no need for solder or glue
• Suitable for ages 11+ with adult supervision
• Requires a 9V battery (sold separately – Order Code L46AL)What can I make?
Create your own light up greetings card or light up room sign. Use conductive paint to build a circuit without wires and even connect your components to the card with the paint. With two red LEDs, a light dependant resistor (LDR) and transistor you can make a simple electronic circuit that lights up as it gets dark. The instructions come with instructions for three different set-ups.
How does it work without wires?
The kit uses conductive paint to complete a circuit. This works due to the electrical conductivity of the paint. As it dries the conductive paint increases its electronic conductivity which allows power to pass though, lighting the LED. The paint dries at room temperature in 10-20 minutes dependant on thickness.
How can conductive paint complete a circuit?
Insulators like wood, card or fabric have very low electrical conductivity, so you cannot use them to carry electricity. However, metals, plasma and water carry electricity well which is why they are used in electronic circuits. Conductive paint is a great alternative to acid etching, as it can be used without gloves and masks.