Internet of Things (IoT)

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Articles related to Microcontrollers, single board computers, and other stuff. This page lists all posts in the category, in reverse chronological order.

• Note: An AI Generated pill displayed in the list below indicates that the post description displayed on the page was generated from the post content using Generative AI (GenAI). The post content itself was written by a human (me).

• Flame Throwing Pumpkin

  Posted Tuesday, October 15, 2024 at 07:34 PM  in Arduino, Internet of Things (IoT)
  

  Back in 2019, I decided to finally start work on a Flame Throwing pumpkin project for Halloween. I saw some projects like this in the past, and I wanted to do my own version. Some projects do some pretty sophisticated things to make a flame thrower in a pumpkin (like using a solenoid to push down the nozzle of a spray can (hair spray or WD-40)) but others use a simple air freshener (short spurt) in front of a candle.

• Ali Express Parts

  Posted Wednesday, June 19, 2024 at 12:17 PM  in Internet of Things (IoT), Project Builds
  

  In my previous post, I mentioned that I like building electronic projects I find online. Historically, I purchased a lot of project components from online vendors like Adafruit and Sparkfun. Both offer their own proprietary boards as well as some standard electronics components you can use for your projects (such as battery connectors, cables, breakout boards, other connectors).

• Using the DFRobot I2C 16x2 LCD display

  Posted Saturday, April 13, 2024 at 10:22 AM  in Internet of Things (IoT)
  

  Describes how to use the DFRobot I2C 16x2(1602) LCD Display Module for Arduino in a project.

• Mounting the DFRobot mmWave RADAR

  Posted December 8, 2023  in Internet of Things (IoT)
  

  A while back, I started building a project using the DFRobot mmWave RADAR. However, as I described in IoT Component Manufacturers Ignoring Mounting Needs, I had some trouble figuring out how to mount the device in my project.

• Accessing an Arduino ESP32 Web Server

  Posted November 19, 2023  in Internet of Things (IoT), ESP32
  

  The third (and, I think, final) article in this series. In this post, I show the different options for connecting to the ESP32 web server highlighting the limitations and restrictions that apply to make your life miserable.

• Using UDP Broadcast to Synchronize Actions Across Arduino Devices

  Posted November 5, 2023  in Arduino, ESP32, Internet of Things (IoT)
  

  Describes a way to synchronize actions or activities across multiple Arduino devices using UDP (broadcast and receiver).

• Arduino UDP Broadcast Receiver

  Posted November 2, 2023  in Arduino, ESP32, Internet of Things (IoT), Flutter
  

  I created an Arduino sketch that implements an UDP broadcast receiver which allows me to control multiple Arduino devices simultaneously from a mobile app.

• Read Pin State Between Two Arduino Devices

  Posted November 1, 2023  in Arduino, Internet of Things (IoT)
  

  As I worked on my latest Halloween project, I realized that one of the things I wanted to do was read the pin state from a different/separate Arduino device. My project used two Arduino-compatible devices for different purposes and I wanted to be able to send a signal from one to the other. I looked around for a while and found a bunch of Forum questions on this topic and answers for the most part, but I couldn't find a post that actually described it in detail. This post does that.

• A Better Arduino MicroFogger Controller Redux

  Posted October 30, 2023  in Internet of Things (IoT), Arduino
  

  In my previous post, I demonstrated a better way to randomly generate smoke using the Vosentech MicroFogger 5 Pro from an Arduino sketch. That version was better because it didn’t block the main loop, instead it let other stuff while it generated smoke and waited.

• A Better Arduino MicroFogger Controller

  Posted October 29, 2023  in Arduino, Internet of Things (IoT)
  

  Describes a better way to control a Vosentech MicroFogger from an Arduino sketch. The example provided in the previous post blocked the sketch's `loop` function and this one doesn't.

• Controlling the Vosentech MicroFogger From An Arduino

  Posted October 28, 2023  in Internet of Things (IoT), Arduino
  

  Describes how to use an Arduino device to control the Vosentech MicroFogger.

• IoT Component Manufacturers Ignoring Mounting Needs

  Posted October 8, 2023  in Internet of Things (IoT)
  

  I'm building some microcontroller-based projects and struggling to find a simple but secure mechanism to mount components in my project. This post highlights some of the challenges.

• Glowing Pumpkin Project Refresh

  Posted August 30, 2023  in Arduino, ESP32, Internet of Things (IoT)
  

  Years ago I published a several Glowing Pumpkin projects: Arduino Glowing Pumpkin and Arduino Glowing Pumpkin (Adafruit Feather). Both projects used Arduino compatible devices plus either one of the Adafruit multi-NeoPixel devices or a NeoPixel shield. The shield approach was easy because I just had to solder some male and female headers to the boards and press them together into a unit. My first project used the NeoPixel Ring which required soldering wires and running them into an enclosure where the Arduino device resides.

• Arduino ESP32 Web Server on a Processor Core

  Posted August 27, 2023  in Internet of Things (IoT), Arduino, ESP32
  

  The second article in this series, describes in detail how to run a web server in an Arduino project on the Espressif ESP32 microcontroller.

• Arduino ESP32 Running Tasks On Multiple Cores

  Posted August 25, 2023  in Arduino, ESP32, Internet of Things (IoT)
  

  This article demonstrates how to assign different tasks to separate processor cores using the Arduino platform and multiple core microcontrollers. I always wanted to learn how to do this, but the examples on the web are so full of ads that I wanted to publish a version with no advertisements as a super clean example.

• DFRobot mmWave RADAR

  Posted July 16, 2023  in Internet of Things (IoT)
  

  A couple of months ago, I started planning my Halloween project for this year. In previous years I've created a Candypult (for the pandemic years), a remotely controlled flame breathing pumpkin (Sparky, we call him), and, my favorite, the twinkle light tubes from last year.

• Synchronizing CircuitPython Files

  Posted February 20, 2023  in Internet of Things (IoT)
  

  I started playing with CircuitPython and decided I didn't like writing code on the device. This post describes a utility I created to help Circuit Python synchronize project files to a local project folder.

• Looking at the Blues Wireless Platform

  Posted October 10, 2021  in Internet of Things (IoT)
  

  I discovered the Blues Wireless platform and started playing around with it. A conference buddy went to work there and he hooked me up with some devices. Its a low power consumption data collection platform (essentially) with ten years of data. This post describes my initial impressions of the platform.

• Andy Doro Word Clock Update

  Posted August 10, 2021  in Internet of Things (IoT), Arduino
  

  I recently discovered Andy Doro's Word Clock and I love the project. I built one for my self then started looking at the code for ways to improve it. I made a bunch of changes to the code and, once Andy added a license to the project repository, forked it and published my own version of it.

• Using the Arduino NTPClient Library

  Posted July 18, 2021  in Internet of Things (IoT), Arduino
  

  I have a version of Andy Doro’s Word Clock running in my house. I had some issues with the real-time clock (RTC) keeping time correctly, so I decided to rebuild the clock using a Wi-Fi enabled device and the Network Time Protocol (NTP) to keep my clock’s local time synchronized with reality.

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Header image: Photo by Robin Glauser on Unsplash.