I'm trying to learn some basics of electronics and electricity with a simple solution to a problem.
Problem: I have an African Violet in a terrarium that I want to help bloom, which means it needs more light.
Solution: Create a simple circuit with 2 high power grow LEDs connected to a battery (so it's portable) that I can place over the plant to extend the time and intensity of light it receives.
I did some math, came up with the resistors I needed and wired it together and it works. Great brightness, the resistors are handling the power and not burning up, etc. After some time, 30 min or maybe an hour, you can tell the LEDs are dimmer. I turn the battery off, wait a little, turn it back on and the lights are bright again.
What is happening? Is the current draw to big on the 9v?