Hello everyone,
The last few days I experimented with the LED Stripes and actually got them to work. Now I have a 5 meter Neopixel ws2812b stripe and have already written a program for it. However, the LEDs flicker like this:
https://1drv.ms/v/s!ApwRFzdtBkGqg5cGsoZUigPgdA_6Hg
The LEDs always flicker, whether a fixed program or color values. I use an external 5V 3A power supply. Here is my program:
// INCLUDE
#include <WiFi.h>
#include <PubSubClient.h>
#include <Adafruit_NeoPixel.h>
#ifdef AVR
#include <avr/power.h>
#endif
// Adafruit_NeoPixel
#define PIN 19
#define NUMPIXELS 300
int delayval = 20;
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
// WIFI
const char* ssid = "Philipp";
const char* password = "PW";
// MQTT
const char* mqtt_server = "192.168.200.1";
// INIT
WiFiClient espClient;
PubSubClient client(espClient);
long lastMsg = 0;
char msg[50];
int value = 0;
// Pin
const int ledPin = 19;
// Var
int sMode = 0;
int A = 0;
int Bs = 0;
int R = 0;
int G = 0;
int B = 0;
// SETUP
void setup() {
Serial.begin(115200);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
#if defined (__AVR_ATtiny85__)
if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
#endif
// End of trinket special code
pixels.begin(); // This initializes the NeoPixel library.
}
void setup_wifi() {
delay(10);
// We start by connecting to a WiFi network
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void callback(char* topic, byte* message, unsigned int length) {
Serial.print("Message arrived on topic: ");
Serial.print(topic);
Serial.print(". Message: ");
String messageTemp;
for (int i = 0; i < length; i++) {
Serial.print((char)message[i]);
messageTemp += (char)message[i];
}
Serial.println();
// Feel free to add more if statements to control more GPIOs with MQTT
// If a message is received on the topic esp32/output, you check if the message is either "on" or "off".
// Changes the output state according to the message
if (String(topic) == "/WandLED/Mode") {
Serial.print("WandLED Modus: ");
Serial.println(messageTemp);
sMode = messageTemp.toInt();
}
if (String(topic) == "/WandLED/R") {
Serial.print("WandLED R: ");
Serial.println(messageTemp);
R = messageTemp.toInt();
}
if (String(topic) == "/WandLED/G") {
Serial.print("WandLED G: ");
Serial.println(messageTemp);
G = messageTemp.toInt();
}
if (String(topic) == "/WandLED/B") {
Serial.print("WandLED B: ");
Serial.println(messageTemp);
B = messageTemp.toInt();
}
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Attempt to connect
if (client.connect("ESP8266Client")) {
Serial.println("connected");
// Subscribe
client.subscribe("/WandLED/Mode");
client.subscribe("/WandLED/R");
client.subscribe("/WandLED/G");
client.subscribe("/WandLED/B");
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}
void loop() {
if (!client.connected()) {
reconnect();
}
client.loop();
if (sMode == 0){
for(int i=0;i<150;i++){
pixels.setPixelColor(i, pixels.Color(R,G,B)); // Moderately bright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
delay(20);
};
delay(20);
} else if (sMode == 1){
A = 150;
Bs = 150;
for(int i=0;i<150;i++){
pixels.setPixelColor(A, pixels.Color(0,100,0)); // Moderately bright green color.
pixels.setPixelColor(Bs, pixels.Color(0,100,0)); // Moderately bright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
A--;
Bs++;
delay(delayval); // Delay for a period of time (in milliseconds).
}
A = 150;
Bs = 150;
for(int i=0;i<150;i++){
pixels.setPixelColor(A, pixels.Color(0,0,100)); // Moderately Bsright green color.
pixels.setPixelColor(Bs, pixels.Color(0,0,100)); // Moderately Bsright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
A--;
Bs++;
delay(delayval); // Delay for a period of time (in milliseconds).
}
A = 150;
Bs = 150;
for(int i=0;i<150;i++){
pixels.setPixelColor(A, pixels.Color(100,0,0)); // Moderately Bsright green color.
pixels.setPixelColor(Bs, pixels.Color(100,0,0)); // Moderately Bsright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
A--;
Bs++;
delay(delayval); // Delay for a period of time (in milliseconds).
}
A = 150;
Bs = 150;
} else if (sMode == 2){
for(int i=0;i<NUMPIXELS;i++){
// pixels.Color takes RGBs values, from 0,0,0 up to 255,255,255
pixels.setPixelColor(i, pixels.Color(0,100,0)); // Moderately Bsright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
delay(delayval); // Delay for a period of time (in milliseconds).
}
for(int i=0;i<NUMPIXELS;i++){
// pixels.Color takes RGBs values, from 0,0,0 up to 255,255,255
pixels.setPixelColor(i, pixels.Color(0,0,100)); // Moderately Bsright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
delay(delayval); // Delay for a period of time (in milliseconds).
}
for(int i=0;i<NUMPIXELS;i++){
// pixels.Color takes RGBs values, from 0,0,0 up to 255,255,255
pixels.setPixelColor(i, pixels.Color(100,0,0)); // Moderately Bsright green color.
pixels.show(); // This sends the updated pixel color to the hardware.
delay(delayval); // Delay for a period of time (in milliseconds).
}
};
}
Thanks for your help!
