If you have never used the Adafruit Feather with the Arduino IDE, there are a few things that you will need to do before you can program the hardware.
Install the latest version of the IDE software using the following guide:
Add support for NeoPixel, Adafruit Sensors and LSM303 Libraries.
- From the Arduino IDE, click the Sketch menu.
- Move to Include Library.
- Click on Manage Libraries...
- When the new window opens, search for NeoPixel
- Click the listing for Adafruit NeoPixel, then click Install or Update.
- Once finished, search for Adafruit LSM303.
- Click and install the listing for Adafruit LSM303DLHC.
- Now search for Adafruit Unified Sensor.
- Scroll to the listing for Adafruit Unified Sensor, this may be at the bottom of the listings, and install.
Now you should be ready to download the code.
Be sure that you have the Adafruit Feather 32u4 board selected under the Tools menu.
Copy and paste the code below into a new Sketch or download the code.
// SPDX-FileCopyrightText: 2019 Anne Barela for Adafruit Industries
//
// SPDX-License-Identifier: MIT
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_LSM303_Accel.h>
#include <Adafruit_NeoPixel.h>
#define LEDpin 6
#define SFX_start 13
#define SFX_PowerUp 12
#define SFX_Fire 11
#define SFX_PowerDown 10
#define SFX_Playing 9
#define button 5
Adafruit_NeoPixel strip = Adafruit_NeoPixel(19, LEDpin, NEO_GRB + NEO_KHZ800);
/* Assign a unique ID to this sensor at the same time */
Adafruit_LSM303_Accel_Unified accel = Adafruit_LSM303_Accel_Unified(54321);
// #####Light Flicker
int alpha; // Current value of the pixels
int dir = 1; // Direction of the pixels... 1 = getting brighter, 0 = getting dimmer
int flip; // Randomly flip the direction every once in a while
int minAlpha = 50; // Min value of brightness
int maxAlpha = 75; // Max value of brightness
int alphaDelta = 1; // Delta of brightness between times through the loop
int Coffset;
void setup()
{
#ifndef ESP8266
// while (!Serial); // will pause Zero, Leonardo, etc until serial console opens
#endif
Serial.begin(9600);
Serial.println("Accelerometer Test"); Serial.println("");
/* Initialise the sensor */
if(!accel.begin())
{
/* There was a problem detecting the ADXL345 ... check your connections */
Serial.println("Ooops, no LSM303 detected ... Check your wiring!");
while(1);
}
/* Display some basic information on this sensor */
displaySensorDetails();
pinMode(SFX_Playing, INPUT_PULLUP);
pinMode(button, INPUT_PULLUP);
pinMode(SFX_start, OUTPUT);
pinMode(SFX_PowerUp, OUTPUT);
pinMode(SFX_Fire, OUTPUT);
pinMode(SFX_PowerDown, OUTPUT);
delay(500);
digitalWrite(SFX_start, HIGH);
digitalWrite(SFX_PowerUp, HIGH);
digitalWrite(SFX_Fire, HIGH);
digitalWrite(SFX_PowerDown, HIGH);
strip.begin();
strip.show(); // Initialize all pixels to 'off'
strip.setBrightness(255);
}
int ReadX;
int PowerUp = 0;
int DotVal = 10;
int ButtonPress = 1;
void loop()
{
while (!digitalRead(button)){
if(ButtonPress){
ButtonPress = 0;
digitalWrite(SFX_PowerDown, LOW);
while(digitalRead(SFX_Playing));
digitalWrite(SFX_PowerDown, HIGH);
while(!digitalRead(SFX_Playing));
}else{
ButtonPress = 1;
digitalWrite(SFX_start, LOW);
while(digitalRead(SFX_Playing));
digitalWrite(SFX_start, HIGH);
while(!digitalRead(SFX_Playing));
}
}
flip = random(32);
if(flip > 20) {
dir = 1 - dir;
}
// Some example procedures showing how to display to the pixels:
if (dir == 1) {
alpha += alphaDelta;
}
if (dir == 0) {
alpha -= alphaDelta;
}
if (alpha < minAlpha) {
alpha = minAlpha;
dir = 1;
}
if (alpha > maxAlpha) {
alpha = maxAlpha;
dir = 0;
}
//DotVal = alpha/8
Coffset = random(10);
colorWipe(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
colorWipeDot(strip.Color(10, 10, alpha/2));
sensors_event_t event;
accel.getEvent(&event);
Serial.print("X: "); Serial.print(event.acceleration.x); Serial.print(" ");
Serial.print("Y: "); Serial.print(event.acceleration.y); Serial.print(" ");
Serial.print("Z: "); Serial.print(event.acceleration.z); Serial.print(" ");Serial.println("m/s^2 ");
ReadX=event.acceleration.y;
if(ReadX < 10.5 && ReadX > 8 && ButtonPress){
PowerUp = 1;
digitalWrite(SFX_PowerUp, LOW);
while(digitalRead(SFX_Playing));
digitalWrite(SFX_PowerUp, HIGH);
while(!digitalRead(SFX_Playing)){
alpha = alpha+1;
if(alpha<254){
colorWipe(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
colorWipeDot(strip.Color(alpha-Coffset/2, alpha-Coffset/2, alpha/2));
}
}
sensors_event_t event;
accel.getEvent(&event);
Serial.print("X: "); Serial.print(event.acceleration.x); Serial.print(" ");
Serial.print("Y: "); Serial.print(event.acceleration.y); Serial.print(" ");
Serial.print("Z: "); Serial.print(event.acceleration.z); Serial.print(" ");Serial.println("m/s^2 ");
ReadX=event.acceleration.y;
delay(50);
if(ReadX < 10.5 && ReadX > 8 ){
digitalWrite(SFX_Fire, LOW);
while(digitalRead(SFX_Playing)){
alpha = alpha-8;
if(alpha>10){
colorWipe(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
colorWipeDot(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
}
}
digitalWrite(SFX_Fire, HIGH);
alpha = 255;
while(!digitalRead(SFX_Playing)){
alpha = alpha - 2;
if(alpha>10){
colorWipe(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
colorWipeDot(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
}
}
colorWipeDot(strip.Color(alpha-Coffset/2, alpha-Coffset/2, alpha/2));
delay(1000);
}else{
digitalWrite(SFX_PowerDown, LOW);
while(digitalRead(SFX_Playing));
digitalWrite(SFX_PowerDown, HIGH);
while(!digitalRead(SFX_Playing)){
alpha = alpha - 1;
DotVal = alpha - 8;
if(alpha>10){
colorWipe(strip.Color(alpha-Coffset, alpha-Coffset, alpha));
colorWipeDot(strip.Color(DotVal-Coffset, DotVal-Coffset, DotVal));
}
}
delay(300);
}
}
//digitalWrite(SFX_PowerUp, HIGH);
//delay(50);
}
// Fill the dots one after the other with a color
void colorWipe(uint32_t c) {
for(uint16_t i=0; i<16; i++) {
strip.setPixelColor(i, c);
strip.show();
}
}
// Fill the dots one after the other with a color
void colorWipeDot(uint32_t c) {
for(uint16_t i=16; i<19; i++) {
strip.setPixelColor(i, c);
strip.show();
}
}
void displaySensorDetails()
{
sensor_t sensor;
accel.getSensor(&sensor);
Serial.println("------------------------------------");
Serial.print ("Sensor: "); Serial.println(sensor.name);
Serial.print ("Driver Ver: "); Serial.println(sensor.version);
Serial.print ("Unique ID: "); Serial.println(sensor.sensor_id);
Serial.print ("Max Value: "); Serial.print(sensor.max_value); Serial.println(" m/s^2");
Serial.print ("Min Value: "); Serial.print(sensor.min_value); Serial.println(" m/s^2");
Serial.print ("Resolution: "); Serial.print(sensor.resolution); Serial.println(" m/s^2");
Serial.println("------------------------------------");
Serial.println("");
delay(500);
}
Page last edited January 18, 2025
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