Neopixel Stoplight

I had been looking for a STL of a stoplight to print for about a year now. I wanted to use the colors of the stoplight to signal to my younger kids when it was ok to wake up in the morning, and when it was time to go back to sleep. My ideal was that I could use Node-Red running on the home server via MQTT to regulate when the stoplight changed colors. Thingiverse’s search is horrible and you could spend days there and not actually get what you are looking for so I never found one that would work. The other day I was searching for some reference STLs of something and accidentally came across a STL for a stoplight. Not one, but three (two remixed from the other).

The first one looked great, good size and decent design. Except it was designed for LEDs and an ATTiny to drive its sequence. The second was a remix of the first. The third was another remix that extended the back casing. The remixes made things easier to print but still relied on LEDs and an ATTiny of sorts. This was a great starting point for me. I have no problems modifying STLs for my purposes. I like to use Tinkercad, not very good with Fusion 360. I downloaded the files and started my own remix. I took elements from all three versions of the stoplight.

I modified the back case to allow a Lolin v3 to be able to mount to it. Then I had to create a cover for the Lolin. I took the front from the original thing, I preferred its one piece to the remixes four piece but I filled in the slot for the little switch. I used the LED panes/covers from the original, unmodified. This was great, I had a front and back a cover, LED panes and the inlay to hold the LEDs. So I printed it all out and went to work. First things first, I tested the LEDs. Like I thought, the LEDs I have are not the super bright ones and running off of the Lolins 3v they just didn’t have enough brightness to shine through very well. No super bright LEDs but I do have some WS2812 neopixels. I hooked one up to test and yes they were perfect. So I modified the LED inlay to hold three neopixels.

I wanted to be able to control the stoplight via MQTT from my server running Node-Red. I used the neopixel example from Adafruit and the default Pubsubclient example for an ESP8266. Mashed the two together and I was able to change the colors on the fly with no problems. I showed off the stoplight to a friend of mine and he loved it. He wanted one for himself, but he doesn’t have a server or anything that runs MQTT. No problem, the Lolin can handle web GUIs. A quick google for a web server on an ESP turned up a nice little tutorial on how to turn on and off GPIO pins from a web GUI. BAM! I took that code and mashed it up with the neopixel code I already had an I was able to get a nice little web page displayed to change the colors of the stoplight. This is awesome.

So behold! Two versions of a “smart” IoT stoplight, haha! One uses MQTT to change the colors. The other allows you to connect to a nice web page to change the colors of the light.

These are the devices I used

Stoplight Remix STL

You can grab the STLs here.

I also uploaded the STL to Thingiverse if you wanna head over there and grab em.

Neopixel Stoplight (Web GUI version) Code

This will host a web page to allow you to connect and change the lights. Connects to your WiFi.

/*
 * neopixel mqtt stop light, D5 as signal for three (3) ws2812s
 * stop light changes states via MQTT commands
 * 
 * commands sent via MQTT topic
 * default state = off
 * 0 = off
 * 1 = red
 * 2 = yellow
 * 3 = green
 * 
 */

#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <Adafruit_NeoPixel.h>

#define PIN D5 // neopixel

// update these values for your network
const char* ssid = "your_ssid";
const char* password = "your_passwd";
const char* mqtt_server = "your_server";
const char* subTopic = "stoplight/"; // topic to subscribe to

// Parameter 1 = number of pixels in strip
// Parameter 2 = 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(3, PIN, NEO_RGB + NEO_KHZ800);

// define the color codes by name to make it easier to call later on
uint32_t green = strip.Color(255, 0, 0);
uint32_t red = strip.Color(0, 255, 0);
uint32_t yellow = strip.Color(255, 100, 0);

WiFiClient espClient;
PubSubClient client(espClient);
long lastMsg = 0;
char msg[50];
int value = 0;

void setup_wifi() {
  delay(100);
  // we start by connecting to a WiFi network
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) 
  {
    delay(500);
    Serial.print(".");
  }
  randomSeed(micros());
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void callback(char* topic, byte* payload, unsigned int length) 
{
  Serial.print("Command from MQTT broker is : [");
  Serial.print(topic);
  int p =(char)payload[0]-'0';

  switch (p) {
    case 0:
      Serial.println("turn off");
      strip.clear();
      strip.show();
      break;
    case 1:
      Serial.println("red");
      strip.clear();
      strip.setPixelColor(0, red);
      strip.show();
      break;
    case 2:
      Serial.println("yellow");
      strip.clear();
      strip.setPixelColor(1, yellow);
      strip.show();
      break;
    case 3:
      Serial.println("green");
      strip.clear();
      strip.setPixelColor(2, green);
      strip.show();
      break;
    default:
      Serial.println("off");
      strip.clear();
      strip.show();
  }
  
  Serial.println();
} // end callback

void reconnect() {
  // loop until we're reconnected
  while (!client.connected()) 
  {
    Serial.print("Attempting MQTT connection...");
    // create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // attempt to connect
    // if you MQTT broker has clientID, username and password
    // please change following line to "if (client.connect(clientId,userName,passWord))"
    if (client.connect(clientId.c_str()))
    {
      Serial.println("connected");
     // once connected to MQTT broker, subscribe command if any
      client.subscribe(subTopic);
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // wait 6 seconds before retrying
      delay(6000);
    }
  }
} // end reconnect()

void setup() {
  Serial.begin(115200);
  
  strip.begin();
  strip.show();   // initialize all pixels to 'off'
  
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }
  client.loop();
}

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* neopixel mqtt stop light, D5 as signal for three (3) ws2812s

* stop light changes states via MQTT commands

* commands sent via MQTT topic

* default state = off

* 0 = off

* 1 = red

* 2 = yellow

* 3 = green

#include <ESP8266WiFi.h>

#include <PubSubClient.h>

#include <Adafruit_NeoPixel.h>

#define PIN D5 // neopixel

// update these values for your network

const char* ssid = "your_ssid";

const char* password = "your_passwd";

const char* mqtt_server = "your_server";

const char* subTopic = "stoplight/"; // topic to subscribe to

// Parameter 1 = number of pixels in strip

// Parameter 2 = 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(3, PIN, NEO_RGB + NEO_KHZ800);

// define the color codes by name to make it easier to call later on

uint32_t green = strip.Color(255, 0, 0);

uint32_t red = strip.Color(0, 255, 0);

uint32_t yellow = strip.Color(255, 100, 0);

WiFiClient espClient;

PubSubClient client(espClient);

long lastMsg = 0;

char msg[50];

int value = 0;

void setup_wifi() {

delay(100);

// we start by connecting to a WiFi network

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED)

{

delay(500);

Serial.print(".");

}

randomSeed(micros());

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

}

void callback(char* topic, byte* payload, unsigned int length)

{

Serial.print("Command from MQTT broker is : [");

Serial.print(topic);

int p =(char)payload[0]-'0';

switch (p) {

case 0:

Serial.println("turn off");

strip.clear();

strip.show();

break;

case 1:

Serial.println("red");

strip.clear();

strip.setPixelColor(0, red);

strip.show();

break;

case 2:

Serial.println("yellow");

strip.clear();

strip.setPixelColor(1, yellow);

strip.show();

break;

case 3:

Serial.println("green");

strip.clear();

strip.setPixelColor(2, green);

strip.show();

break;

default:

Serial.println("off");

strip.clear();

strip.show();

}

Serial.println();

} // end callback

void reconnect() {

// loop until we're reconnected

while (!client.connected())

{

Serial.print("Attempting MQTT connection...");

// create a random client ID

String clientId = "ESP8266Client-";

clientId += String(random(0xffff), HEX);

// attempt to connect

// if you MQTT broker has clientID, username and password

// please change following line to "if (client.connect(clientId,userName,passWord))"

if (client.connect(clientId.c_str()))

{

Serial.println("connected");

// once connected to MQTT broker, subscribe command if any

client.subscribe(subTopic);

} else {

Serial.print("failed, rc=");

Serial.print(client.state());

Serial.println(" try again in 5 seconds");

// wait 6 seconds before retrying

delay(6000);

}

} // end reconnect()

void setup() {

Serial.begin(115200);

strip.begin();

strip.show(); // initialize all pixels to 'off'

setup_wifi();

client.setServer(mqtt_server, 1883);

client.setCallback(callback);

}

void loop() {

if (!client.connected()) {

reconnect();

}

client.loop();

}

Download the web GUI code

Neopixel Stoplight (MQTT version) Code

This will connect to a MQTT server and subscribe to a topic to listen for incoming messages.

/*
 * neopixel web gui stop light, D5 as signal for three (3) ws2812s
 * stop light changes states via commands from a webpage gui
 * 
 * Code adapted from:
 * Rui Santos 
 * Complete project details at https://randomnerdtutorials.com  
 * 
 */

// Load Wi-Fi library
#include <ESP8266WiFi.h>
#include <Adafruit_NeoPixel.h>

// Replace with your network credentials
const char* ssid     = "your_ssid";
const char* password = "your_passwd";

#define PIN D5 // neopixel

// Parameter 1 = number of pixels in strip
// Parameter 2 = 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(3, PIN, NEO_RGB + NEO_KHZ800);

// define the color codes by name to make it easier to call later on
uint32_t green = strip.Color(255, 0, 0);
uint32_t red = strip.Color(0, 255, 0);
uint32_t yellow = strip.Color(255, 100, 0);

// Set web server port number to 80
WiFiServer server(80);

// Variable to store the HTTP request
String header;

// Auxiliar variables to store the current output state
String redState = "off";
String yellowState = "off";
String greenState = "off";

// Current time
unsigned long currentTime = millis();
// Previous time
unsigned long previousTime = 0; 
// Define timeout time in milliseconds (example: 2000ms = 2s)
const long timeoutTime = 2000;

void setup() {
  Serial.begin(115200);

  strip.begin();
  strip.show();   // initialize all pixels to 'off'

  // Connect to Wi-Fi network with SSID and password
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  server.begin();
}

void loop(){
  WiFiClient client = server.available();   // Listen for incoming clients

  if (client) {                             // If a new client connects,
    Serial.println("New Client.");          // print a message out in the serial port
    String currentLine = "";                // make a String to hold incoming data from the client
    currentTime = millis();
    previousTime = currentTime;
    while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
      currentTime = millis();         
      if (client.available()) {             // if there's bytes to read from the client,
        char c = client.read();             // read a byte, then
        Serial.write(c);                    // print it out the serial monitor
        header += c;
        if (c == '\n') {                    // if the byte is a newline character
          // if the current line is blank, you got two newline characters in a row.
          // that's the end of the client HTTP request, so send a response:
          if (currentLine.length() == 0) {
            // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
            // and a content-type so the client knows what's coming, then a blank line:
            client.println("HTTP/1.1 200 OK");
            client.println("Content-type:text/html");
            client.println("Connection: close");
            client.println();
            
            // turns the neopixels on and off
            if (header.indexOf("GET /red/on") >= 0) {
              Serial.println("Red on");
              redState = "on";
              yellowState = "off";
              greenState = "off";
              strip.clear();
              strip.setPixelColor(0, red);
              strip.show();
            } else if (header.indexOf("GET /red/off") >= 0) {
              Serial.println("Red off");
              redState = "off";
              yellowState = "off";
              greenState = "off";
              strip.clear();
              strip.show();
            } else if (header.indexOf("GET /yellow/on") >= 0) {
              Serial.println("Yellow on");
              yellowState = "on";
              redState = "off";
              greenState = "off";
              strip.clear();
              strip.setPixelColor(1, yellow);
              strip.show();
            } else if (header.indexOf("GET /yellow/off") >= 0) {
              Serial.println("Yellow off");
              yellowState = "off";
              redState = "off";
              greenState = "off";
              strip.clear();
              strip.show();
            } else if (header.indexOf("GET /green/on") >= 0) {
              Serial.println("Green on");
              greenState = "on";
              redState = "off";
              yellowState = "off";
              strip.clear();
              strip.setPixelColor(2, green);
              strip.show();
            } else if (header.indexOf("GET /green/off") >= 0) {
              Serial.println("Green off");
              greenState = "off";
              redState = "off";
              yellowState = "off";
              strip.clear();
              strip.show();
            }

            // Display the HTML web page
            client.println("<!DOCTYPE html><html>");
            client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
            client.println("<link rel=\"icon\" href=\"data:,\">");
            // CSS to style the on/off buttons 
            // Feel free to change the background-color and font-size attributes to fit your preferences
            client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
            client.println(".button { background-color: #195B6A; border: none; color: white; padding: 16px 40px;");
            client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
            client.println(".button2 {background-color: #77878A;}</style></head>");
            
            // Web Page Heading
            client.println("<body><h1>Stoplight Server</h1>");
            
            // Display current state, and ON/OFF buttons for Red  
            client.println("<p>Red: " + redState + "</p>");
            // If the redState is off, it displays the ON button       
            if (redState=="off") {
              client.println("<p><a href=\"/red/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/red/off\"><button class=\"button button2\">OFF</button></a></p>");
            } 
               
            // Display current state, and ON/OFF buttons for Yellow 
            client.println("<p>Yellow: " + yellowState + "</p>");
            // If the yellowState is off, it displays the ON button       
            if (yellowState=="off") {
              client.println("<p><a href=\"/yellow/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/yellow/off\"><button class=\"button button2\">OFF</button></a></p>");
            }

            // Display current state, and ON/OFF buttons for Green 
            client.println("<p>Green: " + greenState + "</p>");
            // If the greenState is off, it displays the ON button       
            if (greenState=="off") {
              client.println("<p><a href=\"/green/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/green/off\"><button class=\"button button2\">OFF</button></a></p>");
            }

            client.println("</body></html>");
            
            // The HTTP response ends with another blank line
            client.println();
            // Break out of the while loop
            break;
          } else { // if you got a newline, then clear currentLine
            currentLine = "";
          }
        } else if (c != '\r') {  // if you got anything else but a carriage return character,
          currentLine += c;      // add it to the end of the currentLine
        }
      }
    }
    // Clear the header variable
    header = "";
    // Close the connection
    client.stop();
    Serial.println("Client disconnected.");
    Serial.println("");
  }
}

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* neopixel web gui stop light, D5 as signal for three (3) ws2812s

* stop light changes states via commands from a webpage gui

* Code adapted from:

* Rui Santos

* Complete project details at https://randomnerdtutorials.com

// Load Wi-Fi library

#include <ESP8266WiFi.h>

#include <Adafruit_NeoPixel.h>

// Replace with your network credentials

const char* ssid = "your_ssid";

const char* password = "your_passwd";

#define PIN D5 // neopixel

// Parameter 1 = number of pixels in strip

// Parameter 2 = 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(3, PIN, NEO_RGB + NEO_KHZ800);

// define the color codes by name to make it easier to call later on

uint32_t green = strip.Color(255, 0, 0);

uint32_t red = strip.Color(0, 255, 0);

uint32_t yellow = strip.Color(255, 100, 0);

// Set web server port number to 80

WiFiServer server(80);

// Variable to store the HTTP request

String header;

// Auxiliar variables to store the current output state

String redState = "off";

String yellowState = "off";

String greenState = "off";

// Current time

unsigned long currentTime = millis();

// Previous time

unsigned long previousTime = 0;

// Define timeout time in milliseconds (example: 2000ms = 2s)

const long timeoutTime = 2000;

void setup() {

Serial.begin(115200);

strip.begin();

strip.show(); // initialize all pixels to 'off'

// Connect to Wi-Fi network with SSID and password

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

// Print local IP address and start web server

Serial.println("");

Serial.println("WiFi connected.");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

server.begin();

}

void loop(){

WiFiClient client = server.available(); // Listen for incoming clients

if (client) { // If a new client connects,

Serial.println("New Client."); // print a message out in the serial port

String currentLine = ""; // make a String to hold incoming data from the client

currentTime = millis();

previousTime = currentTime;

while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected

currentTime = millis();

if (client.available()) { // if there's bytes to read from the client,

char c = client.read(); // read a byte, then

Serial.write(c); // print it out the serial monitor

header += c;

if (c == '\n') { // if the byte is a newline character

// if the current line is blank, you got two newline characters in a row.

// that's the end of the client HTTP request, so send a response:

if (currentLine.length() == 0) {

// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)

// and a content-type so the client knows what's coming, then a blank line:

client.println("HTTP/1.1 200 OK");

client.println("Content-type:text/html");

client.println("Connection: close");

client.println();

// turns the neopixels on and off

if (header.indexOf("GET /red/on") >= 0) {

Serial.println("Red on");

redState = "on";

yellowState = "off";

greenState = "off";

strip.clear();

strip.setPixelColor(0, red);

strip.show();

} else if (header.indexOf("GET /red/off") >= 0) {

Serial.println("Red off");

redState = "off";

yellowState = "off";

greenState = "off";

strip.clear();

strip.show();

} else if (header.indexOf("GET /yellow/on") >= 0) {

Serial.println("Yellow on");

yellowState = "on";

redState = "off";

greenState = "off";

strip.clear();

strip.setPixelColor(1, yellow);

strip.show();

} else if (header.indexOf("GET /yellow/off") >= 0) {

Serial.println("Yellow off");

yellowState = "off";

redState = "off";

greenState = "off";

strip.clear();

strip.show();

} else if (header.indexOf("GET /green/on") >= 0) {

Serial.println("Green on");

greenState = "on";

redState = "off";

yellowState = "off";

strip.clear();

strip.setPixelColor(2, green);

strip.show();

} else if (header.indexOf("GET /green/off") >= 0) {

Serial.println("Green off");

greenState = "off";

redState = "off";

yellowState = "off";

strip.clear();

strip.show();

}

// Display the HTML web page

client.println("<!DOCTYPE html><html>");

client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");

client.println("<link rel=\"icon\" href=\"data:,\">");

// CSS to style the on/off buttons

// Feel free to change the background-color and font-size attributes to fit your preferences

client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");

client.println(".button { background-color: #195B6A; border: none; color: white; padding: 16px 40px;");

client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");

client.println(".button2 {background-color: #77878A;}</style></head>");

// Web Page Heading

client.println("<body><h1>Stoplight Server</h1>");

// Display current state, and ON/OFF buttons for Red

client.println("<p>Red: " + redState + "</p>");

// If the redState is off, it displays the ON button

if (redState=="off") {

client.println("<p><a href=\"/red/on\"><button class=\"button\">ON</button></a></p>");

} else {

client.println("<p><a href=\"/red/off\"><button class=\"button button2\">OFF</button></a></p>");

}

// Display current state, and ON/OFF buttons for Yellow

client.println("<p>Yellow: " + yellowState + "</p>");

// If the yellowState is off, it displays the ON button

if (yellowState=="off") {

client.println("<p><a href=\"/yellow/on\"><button class=\"button\">ON</button></a></p>");

} else {

client.println("<p><a href=\"/yellow/off\"><button class=\"button button2\">OFF</button></a></p>");

}

// Display current state, and ON/OFF buttons for Green

client.println("<p>Green: " + greenState + "</p>");

// If the greenState is off, it displays the ON button

if (greenState=="off") {

client.println("<p><a href=\"/green/on\"><button class=\"button\">ON</button></a></p>");

} else {

client.println("<p><a href=\"/green/off\"><button class=\"button button2\">OFF</button></a></p>");

}

client.println("</body></html>");

// The HTTP response ends with another blank line

client.println();

// Break out of the while loop

break;

} else { // if you got a newline, then clear currentLine

currentLine = "";

}

} else if (c != '\r') { // if you got anything else but a carriage return character,

currentLine += c; // add it to the end of the currentLine

}

// Clear the header variable

header = "";

// Close the connection

client.stop();

Serial.println("Client disconnected.");

Serial.println("");

}

Download the MQTT code

If you just wanted to run some basic light sequence code like on an Arduino or something you should check out this page

Stoplight Remix STL

Neopixel Stoplight (Web GUI version) Code

Neopixel Stoplight (MQTT version) Code

Discover more from Its_All.Lost

You may also enjoy:

OpenNept4une

Spaghetti Detective (Obico) on the Neptune 4 Max

Spoolman on OpenNept4une

Leave a ReplyCancel reply

Adventures in Klipper

Wanhao i3 32bit upgrade

MPU6050 on an ESP8266-01 via MQTT

DIY CCTV – Raspberry Pi IP Cameras and NVR

UDM Pro and Comcast

Stoplight Remix STL

Neopixel Stoplight (Web GUI version) Code

Neopixel Stoplight (MQTT version) Code

Discover more from Its_All.Lost

You may also enjoy:

OpenNept4une

Spaghetti Detective (Obico) on the Neptune 4 Max

Spoolman on OpenNept4une

Leave a ReplyCancel reply

Adventures in Klipper

Wanhao i3 32bit upgrade

MPU6050 on an ESP8266-01 via MQTT

DIY CCTV – Raspberry Pi IP Cameras and NVR

UDM Pro and Comcast

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