Parking Sensor
My Project
74
Posts
28
Posters
45.0k
Views
18
Watching
-
I've created a parking sensor of my NeoPixel led ring and a distance sensor.
You can also send the parking status to your controller if you'd like.Components
http://www.ebay.com/itm/371353140878?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com/itm/1pcs-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-Arduino-/251546073420?hash=item3a9150794c -
Excellent!
-
@hek Ultra cool!!!!
-
OK - that is very cool. My wife has just decided we have to have this (after she lightly crushed one of my garage cabinets of course).
-
awesome!
-
Awesome project but will the led always be on when your car is parked?
Or is there a timeout after the measurement to switch it of? -
Awesome project but will the led always be on when your car is parked?
Or is there a timeout after the measurement to switch it of? -
@hek About to make this sensor, very cool! I had already brought a 12v traffic light before I saw this, so now ordered an LED ring, as that makes a lot more sense getting closer to the target area. But could you help out regarding the implementation of the timeout, as I'm pretty terrible at programing :)
-
@hek About to make this sensor, very cool! I had already brought a 12v traffic light before I saw this, so now ordered an LED ring, as that makes a lot more sense getting closer to the target area. But could you help out regarding the implementation of the timeout, as I'm pretty terrible at programing :)
-
My rig is disassembled now.
You could add timeout like this (please feedback if it works so I can check it into github):
/** * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2015 Sensnology AB * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * ******************************* * * REVISION HISTORY * Version 1.0 - Created by Henrik Ekblad * * DESCRIPTION * Parking sensor using a neopixel led ring and distance sensor (HC-SR04). * Configure the digital pins used for distance sensor and neopixels below. * NOTE! Remeber to feed leds and distance sensor serparatly from your Arduino. * It will probably not survive feeding more than a couple of LEDs. You * can also adjust intesity below to reduce the power requirements. * * Sends parking status to the controller as a DOOR sensor if SEND_STATUS_TO_CONTROLLER * is defined below. You can also use this _standalone_ without any radio by * removing the SEND_STATUS_TO_CONTROLLER define. */ #define SEND_STATUS_TO_CONTROLLER // Put a comment on this line for standalone mode #include <Adafruit_NeoPixel.h> #include <NewPing.h> #ifdef SEND_STATUS_TO_CONTROLLER #include <SPI.h> #include <MySensor.h> #endif #define NEO_PIN 4 // NeoPixels input pin #define TRIGGER_PIN 6 // Arduino pin tied to trigger pin on the ultrasonic sensor. #define ECHO_PIN 5 // Arduino pin tied to echo pin on the ultrasonic sensor. #define NUMPIXELS 24 // Number of nexpixels in ring/strip #define MAX_INTESITY 20 // Intesity of leds (in percentage). Remeber more intesity requires more power. // The maximum rated measuring range for the HC-SR04 is about 400-500cm. #define MAX_DISTANCE 100 // Max distance we want to start indicating green (in cm) #define PANIC_DISTANCE 5 // Mix distance we red warning indication should be active (in cm) #define PARKED_DISTANCE 20 // Distance when "parked signal" should be sent to controller (in cm) #define PARK_OFF_TIMEOUT 20000 // Number of milliseconds until turning off light when parked. // Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest // example for more information on possible values. Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, NEO_PIN, NEO_GRB + NEO_KHZ400); NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance. #ifdef SEND_STATUS_TO_CONTROLLER #define CHILD_ID 1 MySensor gw; MyMessage msg(CHILD_ID,V_TRIPPED); #endif unsigned long sendInterval = 5000; // Send park status at maximum every 5 second. unsigned long lastSend; int oldParkedStatus=-1; unsigned long blinkInterval = 100; // blink interval (milliseconds) unsigned long lastBlinkPeriod; bool blinkColor = true; // To make a fading motion on the led ring/tape we only move one pixel/distDebounce time unsigned long distDebounce = 30; unsigned long lastDebouncePeriod; int numLightPixels=0; int skipZero=0; void setup() { Serial.begin(115200); Serial.println("Starting distance sensor"); pixels.begin(); // This initializes the NeoPixel library. Serial.println("Neopixels initialized"); #ifdef SEND_STATUS_TO_CONTROLLER gw.begin(); gw.sendSketchInfo("Parking Sensor", "1.0"); gw.present(CHILD_ID, S_DOOR, "Parking Status"); #endif } void loop() { unsigned long now = millis(); int fullDist = sonar.ping_cm(); // Serial.println(fullDist); int displayDist = min(fullDist, MAX_DISTANCE); if (displayDist == 0 && skipZero<10) { // Try to filter zero readings skipZero++; return; } // Check if it is time to alter the leds if (now-lastDebouncePeriod > distDebounce) { lastDebouncePeriod = now; // Update parked status int parked = displayDist != 0 && displayDist<PARKED_DISTANCE; if (parked != oldParkedStatus && now-lastSend > sendInterval) { if (parked) Serial.println("Car Parked"); else Serial.println("Car Gone"); #ifdef SEND_STATUS_TO_CONTROLLER gw.send(msg.set(parked)); #endif oldParkedStatus = parked; lastSend = now; } if (parked && now-lastSend > PARK_OFF_TIMEOUT) { // We've been parked for a while now. Turn off all pixels for(int i=0;i<NUMPIXELS;i++){ pixels.setPixelColor(i, pixels.Color(0,0,0)); } } else { if (displayDist == 0) { // No reading from sensor, assume no object found numLightPixels--; } else { skipZero = 0; int newLightPixels = NUMPIXELS - (NUMPIXELS*(displayDist-PANIC_DISTANCE)/MAX_DISTANCE); if (newLightPixels>numLightPixels) { // Fast raise numLightPixels += max((newLightPixels - numLightPixels) / 2, 1); } else if (newLightPixels<numLightPixels) { // Slow decent numLightPixels--; } } if (numLightPixels>=NUMPIXELS) { // Do some intense red blinking if (now-lastBlinkPeriod > blinkInterval) { blinkColor = !blinkColor; lastBlinkPeriod = now; } for(int i=0;i<numLightPixels;i++){ pixels.setPixelColor(i, pixels.Color(blinkColor?255*MAX_INTESITY/100:0,0,0)); } } else { for(int i=0;i<numLightPixels;i++){ int r = 255 * i/NUMPIXELS; int g = 255 - r; // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255 pixels.setPixelColor(i, pixels.Color(r*MAX_INTESITY/100,g*MAX_INTESITY/100,0)); } // Turn off the rest for(int i=numLightPixels;i<NUMPIXELS;i++){ pixels.setPixelColor(i, pixels.Color(0,0,0)); } } } pixels.show(); // This sends the updated pixel color to the hardware. } } -
My rig is disassembled now.
You could add timeout like this (please feedback if it works so I can check it into github):
/** * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2015 Sensnology AB * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * ******************************* * * REVISION HISTORY * Version 1.0 - Created by Henrik Ekblad * * DESCRIPTION * Parking sensor using a neopixel led ring and distance sensor (HC-SR04). * Configure the digital pins used for distance sensor and neopixels below. * NOTE! Remeber to feed leds and distance sensor serparatly from your Arduino. * It will probably not survive feeding more than a couple of LEDs. You * can also adjust intesity below to reduce the power requirements. * * Sends parking status to the controller as a DOOR sensor if SEND_STATUS_TO_CONTROLLER * is defined below. You can also use this _standalone_ without any radio by * removing the SEND_STATUS_TO_CONTROLLER define. */ #define SEND_STATUS_TO_CONTROLLER // Put a comment on this line for standalone mode #include <Adafruit_NeoPixel.h> #include <NewPing.h> #ifdef SEND_STATUS_TO_CONTROLLER #include <SPI.h> #include <MySensor.h> #endif #define NEO_PIN 4 // NeoPixels input pin #define TRIGGER_PIN 6 // Arduino pin tied to trigger pin on the ultrasonic sensor. #define ECHO_PIN 5 // Arduino pin tied to echo pin on the ultrasonic sensor. #define NUMPIXELS 24 // Number of nexpixels in ring/strip #define MAX_INTESITY 20 // Intesity of leds (in percentage). Remeber more intesity requires more power. // The maximum rated measuring range for the HC-SR04 is about 400-500cm. #define MAX_DISTANCE 100 // Max distance we want to start indicating green (in cm) #define PANIC_DISTANCE 5 // Mix distance we red warning indication should be active (in cm) #define PARKED_DISTANCE 20 // Distance when "parked signal" should be sent to controller (in cm) #define PARK_OFF_TIMEOUT 20000 // Number of milliseconds until turning off light when parked. // Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest // example for more information on possible values. Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, NEO_PIN, NEO_GRB + NEO_KHZ400); NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance. #ifdef SEND_STATUS_TO_CONTROLLER #define CHILD_ID 1 MySensor gw; MyMessage msg(CHILD_ID,V_TRIPPED); #endif unsigned long sendInterval = 5000; // Send park status at maximum every 5 second. unsigned long lastSend; int oldParkedStatus=-1; unsigned long blinkInterval = 100; // blink interval (milliseconds) unsigned long lastBlinkPeriod; bool blinkColor = true; // To make a fading motion on the led ring/tape we only move one pixel/distDebounce time unsigned long distDebounce = 30; unsigned long lastDebouncePeriod; int numLightPixels=0; int skipZero=0; void setup() { Serial.begin(115200); Serial.println("Starting distance sensor"); pixels.begin(); // This initializes the NeoPixel library. Serial.println("Neopixels initialized"); #ifdef SEND_STATUS_TO_CONTROLLER gw.begin(); gw.sendSketchInfo("Parking Sensor", "1.0"); gw.present(CHILD_ID, S_DOOR, "Parking Status"); #endif } void loop() { unsigned long now = millis(); int fullDist = sonar.ping_cm(); // Serial.println(fullDist); int displayDist = min(fullDist, MAX_DISTANCE); if (displayDist == 0 && skipZero<10) { // Try to filter zero readings skipZero++; return; } // Check if it is time to alter the leds if (now-lastDebouncePeriod > distDebounce) { lastDebouncePeriod = now; // Update parked status int parked = displayDist != 0 && displayDist<PARKED_DISTANCE; if (parked != oldParkedStatus && now-lastSend > sendInterval) { if (parked) Serial.println("Car Parked"); else Serial.println("Car Gone"); #ifdef SEND_STATUS_TO_CONTROLLER gw.send(msg.set(parked)); #endif oldParkedStatus = parked; lastSend = now; } if (parked && now-lastSend > PARK_OFF_TIMEOUT) { // We've been parked for a while now. Turn off all pixels for(int i=0;i<NUMPIXELS;i++){ pixels.setPixelColor(i, pixels.Color(0,0,0)); } } else { if (displayDist == 0) { // No reading from sensor, assume no object found numLightPixels--; } else { skipZero = 0; int newLightPixels = NUMPIXELS - (NUMPIXELS*(displayDist-PANIC_DISTANCE)/MAX_DISTANCE); if (newLightPixels>numLightPixels) { // Fast raise numLightPixels += max((newLightPixels - numLightPixels) / 2, 1); } else if (newLightPixels<numLightPixels) { // Slow decent numLightPixels--; } } if (numLightPixels>=NUMPIXELS) { // Do some intense red blinking if (now-lastBlinkPeriod > blinkInterval) { blinkColor = !blinkColor; lastBlinkPeriod = now; } for(int i=0;i<numLightPixels;i++){ pixels.setPixelColor(i, pixels.Color(blinkColor?255*MAX_INTESITY/100:0,0,0)); } } else { for(int i=0;i<numLightPixels;i++){ int r = 255 * i/NUMPIXELS; int g = 255 - r; // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255 pixels.setPixelColor(i, pixels.Color(r*MAX_INTESITY/100,g*MAX_INTESITY/100,0)); } // Turn off the rest for(int i=numLightPixels;i<NUMPIXELS;i++){ pixels.setPixelColor(i, pixels.Color(0,0,0)); } } } pixels.show(); // This sends the updated pixel color to the hardware. } }@hek Received my LED ring in the mail over the weekend. Hooked it up and ran your code. Everything looks to be working great, including the timeout code. Now need to mount and test under real world conditions, i.e,. in the garage with the car. Has anyone done that yet?
