World Arts LED Circuits September 16, 2015 leot370 Today I worked with more circuits, involving writing code to control electricity flow. Something new that I learned was what a battery looks like in circuit diagrams. I also learned about writing code to light up LEDs through Arduino. Another thing I learned was that RGB lights can show all shades of colors. Below is a picture of three LEDs. The next photo will be posted later when the image transferal is faster.