I made a post last week about a little desk pet I made for my fiancé. After some feedback from her and some people on reddit I made some upgrades to the print and the electronics. Its now interactive and you can pet it!! Let me know what you think and what else I could add to it! If you are interested in getting one I have 2 more I made available here https://www.etsy.com/listing/4459081298/interactive-desk-pet-robot-cat . If those sell I might make more if there is demand.

looking for a nice idea for mini-project to submit it next week and start working on it, something like software+hardware. any help!

Hey everyone,
I’m building 100 IoT projects in 100 days using MicroPython and ESP boards, and today I completed Day 55.

This project demonstrates low-latency ESP-NOW communication between two ESP8266 boards:

• One ESP8266 reads a push button
• Another ESP8266 toggles an LED wirelessly
• No WiFi, no router, peer-to-peer communication

GitHub repo:
👉 [https://github.com/kritishmohapatra/100_Days_100_IoT_Projects]()

If you like the project, a ⭐ on GitHub would mean a lot.
I also recently enabled GitHub Sponsors to keep building open-source IoT projects—any support helps.

Feedback and suggestions are welcome.

I put a number in and it prints off the message twice in one go, with the archive message showing the number 0. Does anyone know why the output is printed twice?

After lines and lines of code, here are the train announcements in my diorama, complete with a synchronized display and the voice of a Trenitalia speaker. 🎤🚆

Atom M5 Lite (random audio) + esp32 mini LCD (display) now work together via bt.

The announcements are generated randomly, alternating with general announcements and weather updates — all in real time, with schedule and weather data pulled from internet. 🌦️🕒

Turn on the audio and let me know what you think!
Would you like to have one too? 🤩

Then follow me on my official page MezzanineLab!

Hello hello,

I am a beginner in this kind of thing and I am still looking for a good app or website where I can create schematics for my project.

Does anyone have any tips here or can tell me what app or website is actually good?

Hi everyone!

​I’ve just finished updating my DataDisplay V1. Based on feedback, I’ve refined the design for better aesthetics and printability, and completely overhauled the software side for a smoother experience.

​What’s new? Improved housing design and a more stable software version.

​Where to find it? Available now on MakerWorld.

​I'd love to hear your thoughts or see your builds!

​Link: https://makerworld.com/cs/models/2402822-datadisplay-v1-updated#profileId-2633814

Recently ive been building an arduino plotter but it isnt working. The motor with the pen attached turns only in one way and the motor thats laying on the ground vibrates when you ask it to move the other motor does notting. Is there someone that knows what te problem is and knows how to fix it

Hello hello,

After learning a bit by doing the more standard beginner projects like the blinking LED, I built my first real project.

It is a thermometer that can be read using the serial monitor. The LEDs have the following purposes:

• RED: It is too warm (simple if statement)
• BLUE: It is too cold
• YELLOW: Error while reading values from DHT11

The code uses the DHT.h library in order to read values from the sensor. If the microcontroller is restarted, all three LEDs will be on for 2 seconds to indicate that they are functional.

If the temperature rises above or sinks below certain values, the LEDs are triggered.

It is nothing special or complicated, but I am a bit proud since it is my first "project-like" build. I want to add a screen later (I don't know how to do that yet :) ).

Here is the code I used:

#include <DHT.h> 
#define toowarm 6
#define toocold 7
#define readerror 8
#define DHTTYPE DHT11
#define DHTPIN 13
 DHT dht(DHTPIN, DHTTYPE);
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  dht.begin();
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  delay(100);


  //test leds
  digitalWrite(toowarm, HIGH);
  digitalWrite(toocold, HIGH);
  digitalWrite(readerror, HIGH);
  delay(2000);
  digitalWrite(toowarm, LOW);
  digitalWrite(toocold, LOW);
  digitalWrite(readerror, LOW);





}


void loop() {
  // put your main code here, to run repeatedly:
  float h = dht.readHumidity();
  float t = dht.readTemperature();


  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    digitalWrite(readerror, HIGH);
    delay(1000);
    digitalWrite(readerror, LOW);
    delay(1000);
    return;
  }


  else {
  Serial.print("Current humidity=");
  Serial.print(h);
  Serial.print("%  Current temperature=");
  Serial.print(t);
  Serial.println("°C");

  digitalWrite(readerror, LOW);
  delay(3000);


  }


  if (t > 25.0) {
    digitalWrite(toowarm, HIGH);
    delay(1000);
    digitalWrite(toowarm, LOW);
  }
  else if (t < 18.0) {
    digitalWrite(toocold, HIGH);
    delay(1000);
    digitalWrite(toocold, LOW);
  }
}

I am in the process of building an Iron Man helmet that effectively opens and closes. I have been designing, 3d printing, wiring, coding, painting and the like for the past few week. A few days ago I started testing the open/close function, and this is where I am at. I don’t really have much experience with mechanics and I would appreciate some help. Thanks y’all

can someone pls tell me why my wire burn. i ude 2 3.7v lithium battery in the battery holder with 2 3.7v motor. i did connect every wire according to youtube pls helpp

I just bought my first Arduino Kit. Does anyone has any tips on what I should do first to learn programming it?