I'm trying to map pressure sensors with LEDs. The pressure sensors are reporting it's value however, the leds are not even on.
When I stick the ground pin in the resistor that's suppose to bee green, it lights up
here is my code and picture
- Blue = 5v
- black = GND
- orange = analog
- white (for pressure sensor is where the analog will be shown,)
- black (for pressure sensor, connected to 5v)
- green = for green led
- red = for red led
// Pin Definitions
const int numSensors = 5; // Number of sensors and LEDs
// Arrays to hold pin numbers for sensors and RGB LEDs
const int forceSensorPins[numSensors] = {A0, A1, A2, A3, A4}; // Analog inputs for force sensors
const int redPins[numSensors] = {5, 7, 13, 16, 18}; // Red LED pins for each LED
const int greenPins[numSensors] = {6, 12, 15, 17, 23}; // Green LED pins for each LED
const int bluePins[numSensors] = {9, 4, 2, 1, 3}; // Blue LED pins for each LED (not used, but reserved)
// Rescaled max value for force sensor reading
const int maxForceValue = 300; // Maximum practical value for your application
// Color boundaries for Green to Yellow to Red transition
const int greenToYellowEnd = maxForceValue / 2; // Midpoint where color is fully Yellow (Green+Red)
const int yellowToRedEnd = maxForceValue; // End at Red (maxForceValue)
void setup() {
// Initialize all LED pins as outputs
for (int i = 0; i < numSensors; i++) {
pinMode(redPins[i], OUTPUT);
pinMode(greenPins[i], OUTPUT);
pinMode(bluePins[i], OUTPUT);
}
Serial.begin(9600); // For debugging purposes
}
void loop() {
// Loop through all sensors and adjust the corresponding LED color
for (int i = 0; i < numSensors; i++) {
// Read the force sensor value
int forceValue = analogRead(forceSensorPins[i]);
// Print the force value to the serial monitor for debugging
Serial.print("Force Sensor ");
Serial.print(i);
Serial.print(": ");
Serial.println(forceValue);
// Adjust the color based on the force value with a smooth gradient
if (forceValue <= greenToYellowEnd) {
// Green to Yellow transition
int redValue = map(forceValue, 0, greenToYellowEnd, 0, 255);
int greenValue = 255;
setColor(i, redValue, greenValue, 0); // No blue used
} else if (forceValue <= yellowToRedEnd) {
// Yellow to Red transition
int redValue = 255;
int greenValue = map(forceValue, greenToYellowEnd, yellowToRedEnd, 255, 0);
setColor(i, redValue, greenValue, 0); // No blue used
}
delay(50); // Small delay for smooth visual transition
}
}
// Function to set the RGB LED color for a specific sensor
void setColor(int sensorIndex, int redValue, int greenValue, int blueValue) {
analogWrite(redPins[sensorIndex], redValue);
analogWrite(greenPins[sensorIndex], greenValue);
analogWrite(bluePins[sensorIndex], blueValue);
}
