[问答]

Nodemcu 0.9对比arduino Nano for Neopixel谁是赢家？

问答对人有帮助，内容完整，我也想知道答案 0 大家好，为了准备在家里制作真正的运动感应楼梯灯，我制作了一个原型。我正在决定是使用 arduino Nano（或任何其他 arduino）还是 Esp 来驱动 LED。偏好 Esp 8266。然而，实验证明 Nano 更好，但理论上我知道 Esp 更强大，内存更大。 Nodemcu 0.9 有延迟（请注意视频中 22 秒的延迟）。是什么导致了这种滞后？ Nano 表现不错，尽管它有更多的像素可能会耗尽内存（对于实际步骤）。你们觉得怎么样？代码：全选 // "Bling" up your Staircase By Simon Jowett November 2014 // Thanks to the Neopxel Library by Adafruit #include #define PIN 3 // Parameter 1 = number of pixels in strip // Parameter 2 = Arduino pin number (most are valid) // Parameter 3 = pixel type flags, add together as needed: // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products) // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) Adafruit_NeoPixel strip = Adafruit_NeoPixel(24, PIN, NEO_GRB + NEO_KHZ800); // IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across // pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input // and minimize distance between Arduino and first pixel. Avoid connecting // on a live circuit...if you must, connect GND first. // Set up Variables unsigned long timeOut=60000; // timestamp to remember when the PIR was triggered. int downUp = 0; // variable to rememer the direction of travel up or down the stairs int alarmPinTop = 7; // PIR at the top of the stairs int alarmValueTop = LOW; // Variable to hold the PIR status int alarmValueBottom = LOW; // Variable to hold the PIR status int ledPin = 16; // LED on the arduino board flashes when PIR activated int LDRSensor = A0; // Light dependant resistor int LDRValue = 0; // Variable to hold the LDR value int colourArray[350]; // An array to hold RGB values int change = 1; // used in 'breathing' the LED's int breathe = 0; // used in 'breathing' the LED's void setup() { strip.begin(); strip.show(); // Initialize all pixels to 'off' Serial.begin (115200); // only requred for debugging pinMode(ledPin, OUTPUT); // initilise the onboard pin 13 LED as an indicator pinMode(alarmPinTop, INPUT); // for PIR at top of stairs initialise the input pin and use the internal restistor delay (2000); // it takes the sensor 2 seconds to scan the area around it before it can //detect infrared presence. for (int i=0 ;i < 350; i++) { // initilise the colourArray to zero colourArray[i]=0; } } void loop() { LDRValue = analogRead(LDRSensor); Serial.println(LDRValue); if (timeOut+57000 < millis()) { // idle state - 'breathe' the top and bottom LED to show program is looping breathe = breathe + change; strip.setPixelColor(0,0,0,breathe); strip.setPixelColor(1,0,0,breathe); strip.setPixelColor(6,0,0,breathe); strip.setPixelColor(7,0,0,breathe); strip.setPixelColor(8,0,0,breathe); strip.setPixelColor(9,0,0,breathe); strip.setPixelColor(14,0,0,breathe); strip.setPixelColor(15,0,0,breathe); strip.setPixelColor(16,0,0,breathe); strip.setPixelColor(17,0,0,breathe); strip.setPixelColor(22,0,0,breathe); strip.setPixelColor(23,0,0,breathe); strip.show(); if (breathe == 100 \|\| breathe == 0) change = -change; // breathe the LED from 0 = off to 100 = fairly bright if (breathe == 100 \|\| breathe == 0) delay (300); // Pause at beginning and end of each breath delay(25); } { // only switch on LED's at night when LDR senses low light conditions - you may have to change the number for your circumstances! alarmValueTop = digitalRead(alarmPinTop); // Constantly poll the PIR at the top of the stairs if (alarmValueTop == HIGH && downUp != 2) { // the 2nd term allows timeOut to be contantly reset if one lingers at the top of the stairs before decending but will not allow the bottom PIR to reset timeOut as you decend past it. timeOut=millis(); // Timestamp when the PIR is triggered. The LED cycle wil then start. downUp = 1; topdown(); // lights up the strip from top down } if (alarmValueBottom == HIGH && downUp != 1) { // the 2nd term allows timeOut to be contantly reset if one lingers at the bottom of the stairs before decending but will not allow the top PIR to reset timeOut as you decend past it. timeOut=millis(); // Timestamp when the PIR is triggered. The LED cycle wil then start. downUp = 2; bottomup(); // lights up the strip from bottom up } if (timeOut+10000 < millis() && timeOut+15000 < millis()) { //switch off LED's in the direction of travel. if (downUp == 1) { colourWipeDown(strip.Color(0, 0, 0), 50); // Off } if (downUp == 2) { colourWipeUp(strip.Color(0, 0, 0), 50); // Off } downUp = 0; // for (int i=0 ;i < 350; i++) { // Depending on your preference you may want to include this loop to clear out the colourArray // colourArray[i]=0; // } } if (timeOut+15000 < millis() && timeOut+54999 > millis()) waterfall(); // Waterfall effect to play between these times after a PIR trigger. if (timeOut+55000 < millis() && timeOut+56999 > millis()) fade(); // Fade/switch off LED's } } void topdown() { Serial.println ("detected top"); // Helpful debug message colourWipeDown(strip.Color(50, 50, 30), 40); // Warm White for(int i=0; i<3; i++) { // Helpful debug indication flashes led on Arduino board twice digitalWrite(ledPin,HIGH); delay(200); digitalWrite(ledPin,LOW); delay(200); } } void bottomup() { Serial.println ("detected bottom"); // Helpful debug message colourWipeUp(strip.Color(50, 50, 30), 40); // Warm White for(int i=0; i<3; i++) { // Helpful debug indication flashes led on Arduino board twice digitalWrite(ledPin,HIGH); delay(200); digitalWrite(ledPin,LOW); delay(200); } } // Fill the dots one after the other with a color void colourWipeDown(uint32_t c, uint8_t wait) { for(uint16_t i=0; i-1; i--) { // Shift the RGB colours down in the colourArray[] colourArray[i+3]=colourArray[i]; } colourArray[0] = random(0,20); // Genearate the red component of the 1st LED at the top of the stairs colourArray[1] = random(0,40); // Genearate the green component of the 1st LED at the top of the stairs colourArray[2] = random(10,70); // Genearate the blue component of the 1st LED at the top of the stairs for (int k=0; k<351; k=k+3) { // Set and send the colours to the strip uint32_t c = strip.Color(colourArray[k],colourArray[k+1],colourArray[k+2]); strip.setPixelColor(((k+3)/3)-1,c); } strip.show(); // and display the result delay(35); // delay to simulate running water } // Play the LED fade out void fade(){ for (int j = 0; j <70; j++) { for(int i=350; i>-1; i--) { colourArray[i]=colourArray[i]-1; // reduce intensity of light by 1 if (colourArray[i] <= 0 ) colourArray[i] = 0; } for (int k=0; k<351; k=k+3) { uint32_t c = strip.Color(colourArray[k],colourArray[k+1],colourArray[k+2]); strip.setPixelColor(((k+3)/3)-1,c); } strip.show(); delay(60); } breathe = 0; change = 1; } 复制代码代码：全选 // "Bling" up your Staircase By Simon Jowett November 2014 // Thanks to the Neopxel Library by Adafruit #include #define PIN 4 // Parameter 1 = number of pixels in strip // Parameter 2 = Arduino pin number (most are valid) // Parameter 3 = pixel type flags, add together as needed: // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products) // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) Adafruit_NeoPixel strip = Adafruit_NeoPixel(24, PIN, NEO_GRB + NEO_KHZ800); // IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across // pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input // and minimize distance between Arduino and first pixel. Avoid connecting // on a live circuit...if you must, connect GND first. // Set up Variables unsigned long timeOut=60000; // timestamp to remember when the PIR was triggered. int downUp = 0; // variable to rememer the direction of travel up or down the stairs int alarmPinTop = 5; // PIR at the top of the stairs int alarmValueTop = LOW; // Variable to hold the PIR status int alarmValueBottom = LOW; // Variable to hold the PIR status int ledPin = 16; // LED on the arduino board flashes when PIR activated int LDRSensor = A0; // Light dependant resistor int LDRValue = 0; // Variable to hold the LDR value int colourArray[350]; // An array to hold RGB values int change = 1; // used in 'breathing' the LED's int breathe = 0; // used in 'breathing' the LED's void setup() { strip.begin(); strip.show(); // Initialize all pixels to 'off' Serial.begin (115200); // only requred for debugging pinMode(ledPin, OUTPUT); // initilise the onboard pin 13 LED as an indicator pinMode(alarmPinTop, INPUT); // for PIR at top of stairs initialise the input pin and use the internal restistor delay (2000); // it takes the sensor 2 seconds to scan the area around it before it can //detect infrared presence. for (int i=0 ;i < 350; i++) { // initilise the colourArray to zero colourArray[i]=0; } } void loop() { LDRValue = analogRead(LDRSensor); Serial.println(LDRValue); if (timeOut+57000 < millis()) { // idle state - 'breathe' the top and bottom LED to show program is looping breathe = breathe + change; strip.setPixelColor(0,0,0,breathe); strip.setPixelColor(1,0,0,breathe); strip.setPixelColor(6,0,0,breathe); strip.setPixelColor(7,0,0,breathe); strip.setPixelColor(8,0,0,breathe); strip.setPixelColor(9,0,0,breathe); strip.setPixelColor(14,0,0,breathe); strip.setPixelColor(15,0,0,breathe); strip.setPixelColor(16,0,0,breathe); strip.setPixelColor(17,0,0,breathe); strip.setPixelColor(22,0,0,breathe); strip.setPixelColor(23,0,0,breathe); strip.show(); if (breathe == 100 \|\| breathe == 0) change = -change; // breathe the LED from 0 = off to 100 = fairly bright if (breathe == 100 \|\| breathe == 0) delay (300); // Pause at beginning and end of each breath delay(25); } { // only switch on LED's at night when LDR senses low light conditions - you may have to change the number for your circumstances! alarmValueTop = digitalRead(alarmPinTop); // Constantly poll the PIR at the top of the stairs if (alarmValueTop == HIGH && downUp != 2) { // the 2nd term allows timeOut to be contantly reset if one lingers at the top of the stairs before decending but will not allow the bottom PIR to reset timeOut as you decend past it. timeOut=millis(); // Timestamp when the PIR is triggered. The LED cycle wil then start. downUp = 1; topdown(); // lights up the strip from top down } if (alarmValueBottom == HIGH && downUp != 1) { // the 2nd term allows timeOut to be contantly reset if one lingers at the bottom of the stairs before decending but will not allow the top PIR to reset timeOut as you decend past it. timeOut=millis(); // Timestamp when the PIR is triggered. The LED cycle wil then start. downUp = 2; bottomup(); // lights up the strip from bottom up } if (timeOut+10000 < millis() && timeOut+15000 < millis()) { //switch off LED's in the direction of travel. if (downUp == 1) { colourWipeDown(strip.Color(0, 0, 0), 50); // Off } if (downUp == 2) { colourWipeUp(strip.Color(0, 0, 0), 50); // Off } downUp = 0; // for (int i=0 ;i < 350; i++) { // Depending on your preference you may want to include this loop to clear out the colourArray // colourArray[i]=0; // } } if (timeOut+15000 < millis() && timeOut+54999 > millis()) waterfall(); // Waterfall effect to play between these times after a PIR trigger. if (timeOut+55000 < millis() && timeOut+56999 > millis()) fade(); // Fade/switch off LED's } } void topdown() { Serial.println ("detected top"); // Helpful debug message colourWipeDown(strip.Color(50, 50, 30), 40); // Warm White for(int i=0; i<3; i++) { // Helpful debug indication flashes led on Arduino board twice digitalWrite(ledPin,HIGH); delay(200); digitalWrite(ledPin,LOW); delay(200); } } void bottomup() { Serial.println ("detected bottom"); // Helpful debug message colourWipeUp(strip.Color(50, 50, 30), 40); // Warm White for(int i=0; i<3; i++) { // Helpful debug indication flashes led on Arduino board twice digitalWrite(ledPin,HIGH); delay(200); digitalWrite(ledPin,LOW); delay(200); } } // Fill the dots one after the other with a color void colourWipeDown(uint32_t c, uint8_t wait) { for(uint16_t i=0; i-1; i--) { // Shift the RGB colours down in the colourArray[] colourArray[i+3]=colourArray[i]; } colourArray[0] = random(0,20); // Genearate the red component of the 1st LED at the top of the stairs colourArray[1] = random(0,40); // Genearate the green component of the 1st LED at the top of the stairs colourArray[2] = random(10,70); // Genearate the blue component of the 1st LED at the top of the stairs for (int k=0; k<351; k=k+3) { // Set and send the colours to the strip uint32_t c = strip.Color(colourArray[k],colourArray[k+1],colourArray[k+2]); strip.setPixelColor(((k+3)/3)-1,c); } strip.show(); // and display the result delay(35); // delay to simulate running water } // Play the LED fade out void fade(){ for (int j = 0; j <70; j++) { for(int i=350; i>-1; i--) { colourArray[i]=colourArray[i]-1; // reduce intensity of light by 1 if (colourArray[i] <= 0 ) colourArray[i] = 0; } for (int k=0; k<351; k=k+3) { uint32_t c = strip.Color(colourArray[k],colourArray[k+1],colourArray[k+2]); strip.setPixelColor(((k+3)/3)-1,c); } strip.show(); delay(60); } breathe = 0; change = 1; } 复制代码 0
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