First of all, I’m from Switzerland so please excuse my english mistakes.
Here is one of my first little project I did with my Arduino Uno.
It’s is just a little light seeker. The servo turns towards the light.
Step 1: The wiring
Here is the exact wiring I used.
The only difference is that I fixed the photoresistors on the servo (but I couldn’t do it with the program)
Also I used a 9V battery in the video, it was plugged in Vin and GND.
The resistors are 200 Ohm for the LED’s and 10 KOhm for the photoresistors.
Step 2: The code
This is my first code. I tried to translate the comments in english.
The Arduino calculate the difference between the left and right photoresistor and turns the servo if the difference is greater than 30.
When the servo is turning clockwise, the right LED lights up. When it turns counter clockwise, the left LED lights up
If you see any errors or weird thing, please tell me 🙂
#include Servo servo; //define servo //Variables int photoD = 0; //define pin 0 for right photoresistor int photoG = 1; //define pin 1 for left photoresistor int ledD = 3; //define pin 3 for right LED int ledG = 5; //define pin 5 for left LED int incr = 5; //value to add to the angle int valS; //angle long temps; //Time long temps2; //Time 2 long temps3; //Time 3 long temps4; //Time 4 //----------------------------------------------------------------------------
For more detail: Arduino light seeker
