Introduction: Arduino Project #1
This is a guide on how to make a D-battery charge tester using arduino.
Step 1: Step 1: MATERIALS
Here is a list of what you need for the D-battery charge tester.
- 1 Arduino Uno R3 and breadboard
- 3 LED lights
- 10 wires
- 1 1.5V (D) battery
Step 2: Step 2: Putting It Together
Use the attached image for assembly.
Step 3: Step 3: Code Time
If not already downloaded-
- download the arduino software from the arduino website
- Imput the code below and run
float a = 0;
float x; float y;
void setup() {
x=conversion(1.4);
y=conversion(0.4);
pinMode(13, OUTPUT); }
void loop() {
a = analogRead(0);
if (a > x) {
digitalWrite(13, HIGH);
digitalWrite(12, LOW);
digitalWrite(11, LOW);
} else if (a > y && a < x) {
digitalWrite(13, LOW);
digitalWrite(12, HIGH);
digitalWrite(11, LOW);
} else if (a < y) {
digitalWrite(13, LOW);
digitalWrite(12, LOW);
digitalWrite(11, HIGH);
}
}
float conversion(float a){
float b=((a/5)*1024);
return b;
}
Step 4: Step 4: You're Done!
The arduino should work perfectly now.