Latest Posts

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  Getting Started with ESP32-CAM CH340 with OV2640 and GC2145 or RHYX M21-45 Camera
  by donsky
  December 12, 2025
  Introduction The ESP32-CAM has become one of the most popular low-cost camera development boards for IoT, DIY smart home projects, and AI-powered vision systems. But in the previous years, a new wave of ESP32-CAM boards started appearing on the market that include built-in USB (CH340) and support not only the classic OV2640 sensor but also… Read more: Getting Started with ESP32-CAM CH340 with OV2640 and GC2145 or RHYX M21-45 Camera
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  Using the SIM800C USB to GSM GPRS Module — A Practical Guide using Python
  by donsky
  December 2, 2025
  Introduction Whether you’re developing a web application or working on an Internet of Things (IoT) project using your laptop or a Raspberry Pi, the need to send SMS or text messages is a common requirement. If this sounds like your task, then look no further! The SIM800C USB to GSM Module is an excellent and… Read more: Using the SIM800C USB to GSM GPRS Module — A Practical Guide using Python
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  Fixing Device Not Working in Windows/PC: Error Code 31 Troubleshooting Guide for your Arduino Microcontrollers
  by donsky
  November 28, 2025
  Introduction Have you encountered an issue with your Microcontroller or any other electronic modules that have a specific driver like CH340, CP2102, or CH9102 when you plugged it into your USB, and it does not work? You open your device manager, and you would see this specific error: “This device is not working properly because… Read more: Fixing Device Not Working in Windows/PC: Error Code 31 Troubleshooting Guide for your Arduino Microcontrollers
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  ESP32 and PZEM-004T: How to retrieve multiple PZEM-004T readings using Arduino?
  by donsky
  March 31, 2025
  Introduction Nowadays, electricity power rates are going higher and higher so keeping track of your consumption is not a bad idea to undertake. In this post, I will show you how you can use your ESP32 microcontroller to retrieve AC load parameters using the PZEM-004T module using the Arduino framework. Voltage, current, power, etc for… Read more: ESP32 and PZEM-004T: How to retrieve multiple PZEM-004T readings using Arduino?
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  Exploring Node-Red, Dashboard 2.0, and MQTT
  by donsky
  March 1, 2024
  Introduction Do you want to control your Arduino electronic circuits using a Web Application but you are not familiar with HTML/CSS/Javascript? Enter Node-Red and the newly released Node-Red Dashboard 2.0. By using this low-code platform, beginners can create Internet of Things (IoT) applications for their projects by just dragging, connecting nodes, and configuring their properties.… Read more: Exploring Node-Red, Dashboard 2.0, and MQTT