New to everything but programming. I built a robot based on this tutorial:
But I have added a back-up IR sensor, two tactile buttons for bump sensors, and a piezo speaker. As you can see, a 9V is powering Arduino and the 5V from Arduino is the power on the breadboard.
The 6V AA pack is powering the servo and the motor controller. The tactile buttons are on the breadboard power and the piezo is wired according to the Tone tutorial here:
I have to admit I don't really understand how all the power works, since pins on the motor controller go to both the 5V from Arduino and the 6V from the battery pack.
In any case, it all works. Since I have 4 more digital pins, I wanted to wire in 4 LEDs, 2 in front and 2 in back. So I bought a bag of LEDs and wired them up like this tutorial:
When the LEDs are are their own dedicated Arduino (not the robots), they work just fine with the blinking sketch. However, when on the robot, they light up, but barely. The only time they light up is the two up front light when moving forward, and two in back light up when moving backwards.
So, everything works... just that I want my LEDs brighter. I'm thinking I'm just short on power, but not sure what to do.
What should I do?