Category: Internet of Things (IoT)

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This page lists all posts in the category, in reverse chronological order.

• Using UDP Broadcast to Synchronize Actions Across Arduino Devices

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

  With my Glowing Pumpkin Project Refresh my ultimate goal was to synchronize LED Matrix colors across multiple devices so I could place one in a pumpkin in each of the front dormers in my house. I finally got it all working and published the project yesterday at Glowing Pumpkin Sync UDP.

• 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.

• 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.

• Word Clock Time Issues

  Posted July 14, 2021 in Internet of Things (IoT), Arduino
  The clock's been running in our guest bathroom for more than a year now and I recently noticed that the clock wasn't keeping time very well. It was about 20 minutes fast. The original project is based on the Adafruit Trinket device which doesn't have a Wi-Fi connection, so it can't get it's time through Network Time Protocol (NTP). Instead, sets the clock to the compile date/time for the currently running sketch.

• Simplifying Moddable Deployments

  Posted May 21, 2021 in Internet of Things (IoT)
  Moddable is one of the JavaScript based microcontroller I've been working with lately and these guys are really serious about their JavaScript. I encountered some inefficiencies with their CLI tooling so I built a wrapper that simplifies its operation.

• Moddable, Windows, & Visual Studio Code

  Posted May 20, 2021 in Internet of Things (IoT)
  I spent some time recently setting up a development environment for the Moddable platform (JavaScript microcontrollers). Since I'm on Windows and the docs were a little confusing, I setup my environment then wrote about it here so others could learn how to configure their environments.

• JavaScript Microcontrollers

  Posted May 14, 2021 in Internet of Things (IoT)
  I've been working with microcontrollers for a long time and there is a new trend around JavaScript-based microcontrollers (my favorite) and I wrote this post to introduce some of the ones I'm playing around with.

• Updated My Pi Remind Project (December, 2018)

  Posted January 13, 2019 in Internet of Things (IoT)
  

  I've been running my Pi Remind project at my desk now for several years. I started with the Pi Remind (https://github.com/johnwargo/pi-remind), but then upgraded the hardware to the higher resolution Pi Remind HD (https://github.com/johnwargo/pi-remind-hd) hardware. The project essentially gives me a visual reminder when I have an upcoming appointment on my personal calendar. My personal calendar is online using Google Calendar, so it's easy for the Raspberry Pi to connect to my calendar through Google's public API.

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Header image: Photo by Robin Glauser on Unsplash.