The software is just as simple as the hooking up the hardware. We’re going to configure the NeoPixels, set up some variables for the switch/Spark API, and run a loop to check the activity of the door.
Setting up the NeoPixels takes a little more effort in the Spark IDE than a Arduino. The library is included in the web IDE which is handy, but it requires a few variables to be defined before making the initial call to set up the NeoPixel. The code here will take care of telling it which pin we’re hooked up to, how many pixels we’re pushing, and the type of driver.
#include "neopixel/neopixel.h" #define PIXEL_PIN D2 #define PIXEL_COUNT 64 #define PIXEL_TYPE WS2812B Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);
We’ll also need to create a few basic variables along the way. Assigning A0 to “analogPin” can reference it without forgetting the number. The “sensorData” variable will hold the latest value from the sensor. “doorStatus” is where we’ll access the state of the switch on the door.
#define sensorPin = D1; int sensorData = 0; int doorStatus = 0;
In the setup we’ll start the NeoPixel and turn all the pixels to off. We’ll use the Spark API calls to spit out a variable called “doorStatus”, which will be 0 or 1, and share it with the web.
void setup() {
strip.begin();
strip.show(); // Initialize all pixels to 'off'
Spark.variable(“doorStatus", &doorStatus, INT);
}
The loop will read the sensor (reed switch) to see if the value is available (zero) or in use (1). When the status of the door changes to open, update “doorStatus” to one and share it with the Spark Core API using the Spark.variable from above, and display a red X on our NeoPixel. If that status changes, we’ll indicate a green check mark for open.
void loop() {
sensorData = digitalRead(sensorPin);
if (sensorData = 1)
{
doorStatus = 1;
doorClosed();
}
else
{
doorStatus = 0;
doorOpen();
}
}
NeoPixels need to be controlled manually for a situation like this; each shape needs to be entered manually. Use the stip.setPixelColor() function to pass the number in the array (0-63) and the RGB value.
strip.setPixelColor(22, 27, 167, 46);
To make things easier in counting these, I created a quick grid in PhotoShop with numbered square guides. It’s easy canvas to create/dissect coordinates without losing count or track. Below is a template that will help you in building your own shapes in the future.
We’ll list out all the coordinates for each shape, then put them into functions that group them together. The brightness of that shape can be defined here using the strip.setBrightness() function too. (255 may induce x-ray vision) strip.show() displays what we’ve decided on and displays it.
void doorOpen() {
strip.setPixelColor(0, 0, 0, 0);
strip.setPixelColor(1, 0, 0, 0);
strip.setPixelColor(2, 0, 0, 0);
strip.setPixelColor(3, 0, 0, 0);
strip.setPixelColor(4, 0, 0, 0);
strip.setPixelColor(5, 0, 0, 0);
strip.setPixelColor(6, 0, 0, 0);
strip.setPixelColor(7, 0, 0, 0);
strip.setPixelColor(8, 0, 0, 0);
strip.setPixelColor(9, 0, 0, 0);
strip.setPixelColor(10, 0, 0, 0);
strip.setPixelColor(11, 0, 0, 0);
strip.setPixelColor(12, 0, 0, 0);
strip.setPixelColor(13, 0, 0, 0);
strip.setPixelColor(14, 0, 0, 0);
strip.setPixelColor(15, 0, 0, 0);
strip.setPixelColor(16, 0, 0, 0);
strip.setPixelColor(17, 0, 0, 0);
strip.setPixelColor(18, 0, 0, 0);
strip.setPixelColor(19, 0, 0, 0);
strip.setPixelColor(20, 0, 0, 0);
strip.setPixelColor(21, 0, 0, 0);
strip.setPixelColor(22, 27, 167, 46);
strip.setPixelColor(23, 0, 0, 0);
strip.setPixelColor(24, 0, 0, 0);
strip.setPixelColor(25, 0, 0, 0);
strip.setPixelColor(26, 0, 0, 0);
strip.setPixelColor(27, 0, 0, 0);
strip.setPixelColor(28, 0, 0, 0);
strip.setPixelColor(29, 27, 167, 46);
strip.setPixelColor(30, 0, 0, 0);
strip.setPixelColor(31, 0, 0, 0);
strip.setPixelColor(32, 0, 0, 0);
strip.setPixelColor(33, 0, 0, 0);
strip.setPixelColor(34, 0, 0, 0);
strip.setPixelColor(35, 0, 0, 0);
strip.setPixelColor(36, 27, 167, 46);
strip.setPixelColor(37, 0, 0, 0);
strip.setPixelColor(38, 0, 0, 0);
strip.setPixelColor(39, 0, 0, 0);
strip.setPixelColor(40, 0, 0, 0);
strip.setPixelColor(41, 27, 167, 46);
strip.setPixelColor(42, 0, 0, 0);
strip.setPixelColor(43, 27, 167, 46);
strip.setPixelColor(44, 0, 0, 0);
strip.setPixelColor(45, 0, 0, 0);
strip.setPixelColor(46, 0, 0, 0);
strip.setPixelColor(47, 0, 0, 0);
strip.setPixelColor(48, 0, 0, 0);
strip.setPixelColor(49, 0, 0, 0);
strip.setPixelColor(50, 27, 167, 46);
strip.setPixelColor(51, 0, 0, 0);
strip.setPixelColor(52, 0, 0, 0);
strip.setPixelColor(53, 0, 0, 0);
strip.setPixelColor(54, 0, 0, 0);
strip.setPixelColor(55, 0, 0, 0);
strip.setPixelColor(56, 0, 0, 0);
strip.setPixelColor(57, 0, 0, 0);
strip.setPixelColor(58, 0, 0, 0);
strip.setPixelColor(59, 0, 0, 0);
strip.setPixelColor(60, 0, 0, 0);
strip.setPixelColor(61, 0, 0, 0);
strip.setPixelColor(62, 0, 0, 0);
strip.setPixelColor(63, 0, 0, 0);
strip.setBrightness(30);
strip.show();
}
void doorClosed() {
strip.setPixelColor(0, 0, 0, 0);
strip.setPixelColor(1, 0, 0, 0);
strip.setPixelColor(2, 0, 0, 0);
strip.setPixelColor(3, 0, 0, 0);
strip.setPixelColor(4, 0, 0, 0);
strip.setPixelColor(5, 0, 0, 0);
strip.setPixelColor(6, 0, 0, 0);
strip.setPixelColor(7, 0, 0, 0);
strip.setPixelColor(8, 0, 0, 0);
strip.setPixelColor(9, 185, 30, 0);
strip.setPixelColor(10, 0, 0, 0);
strip.setPixelColor(11, 0, 0, 0);
strip.setPixelColor(12, 0, 0, 0);
strip.setPixelColor(13, 0, 0, 0);
strip.setPixelColor(14, 185, 30, 0);
strip.setPixelColor(15, 0, 0, 0);
strip.setPixelColor(16, 0, 0, 0);
strip.setPixelColor(17, 0, 0, 0);
strip.setPixelColor(18, 185, 30, 0);
strip.setPixelColor(19, 0, 0, 0);
strip.setPixelColor(20, 0, 0, 0);
strip.setPixelColor(21, 185, 30, 0);
strip.setPixelColor(22, 0, 0, 0);
strip.setPixelColor(23, 0, 0, 0);
strip.setPixelColor(24, 0, 0, 0);
strip.setPixelColor(25, 0, 0, 0);
strip.setPixelColor(26, 0, 0, 0);
strip.setPixelColor(27, 185, 30, 0);
strip.setPixelColor(28, 185, 30, 0);
strip.setPixelColor(29, 0, 0, 0);
strip.setPixelColor(30, 0, 0, 0);
strip.setPixelColor(31, 0, 0, 0);
strip.setPixelColor(32, 0, 0, 0);
strip.setPixelColor(33, 0, 0, 0);
strip.setPixelColor(34, 0, 0, 0);
strip.setPixelColor(35, 185, 30, 0);
strip.setPixelColor(36, 185, 30, 0);
strip.setPixelColor(37, 0, 0, 0);
strip.setPixelColor(38, 0, 0, 0);
strip.setPixelColor(39, 0, 0, 0);
strip.setPixelColor(40, 0, 0, 0);
strip.setPixelColor(41, 0, 0, 0);
strip.setPixelColor(42, 185, 30, 0);
strip.setPixelColor(43, 0, 0, 0);
strip.setPixelColor(44, 0, 0, 0);
strip.setPixelColor(45, 185, 30, 0);
strip.setPixelColor(46, 0, 0, 0);
strip.setPixelColor(47, 0, 0, 0);
strip.setPixelColor(48, 0, 0, 0);
strip.setPixelColor(49, 185, 30, 0);
strip.setPixelColor(50, 0, 0, 0);
strip.setPixelColor(51, 0, 0, 0);
strip.setPixelColor(52, 0, 0, 0);
strip.setPixelColor(53, 0, 0, 0);
strip.setPixelColor(54, 185, 30, 0);
strip.setPixelColor(55, 0, 0, 0);
strip.setPixelColor(56, 0, 0, 0);
strip.setPixelColor(57, 0, 0, 0);
strip.setPixelColor(58, 0, 0, 0);
strip.setPixelColor(59, 0, 0, 0);
strip.setPixelColor(60, 0, 0, 0);
strip.setPixelColor(61, 0, 0, 0);
strip.setPixelColor(62, 0, 0, 0);
strip.setPixelColor(63, 0, 0, 0);
strip.setBrightness(30);
strip.show();
}
Page last edited December 05, 2014
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