The BL0937 is a highly integrated, cost-effective single-phase energy metering IC designed for modern smart sockets, power strips, and intelligent appliances. Engineered for accuracy, stability, and simplicity, it enables precise measurement of active power, voltage RMS, and current RMS using only a handful of external components. Whether you are a hobbyist building a smart plug […]
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Circular displays are a unique twist for DIY electronics projects. While most LCDs are square or rectangular, the 1.28-inch round TFT display gives your project a modern, smartwatch-like look. It’s based on the GC9A01 controller, offers a 240×240 full-color IPS panel, and connects over SPI. In this guide we’ll explore what it is, how to wire it, how to drive
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When it comes to detecting motion in DIY electronics, the HC-SR501 PIR sensor is one of the most popular and affordable choices. It’s used everywhere: alarm systems, automatic lights, smart home devices, and even art installations. In this guide we’ll cover how the sensor works, its specifications, wiring, configuration, and how to use it with
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The 2.25 inch TFT LCD ST7789 SPI display is a compact but powerful module, perfect for all kinds of embedded projects. Whether you are using an ESP32, Arduino, or Raspberry Pi, this screen allows you to display sharp, colorful graphics. In this article, we will take a closer look at the specifications, pinout, and how
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When you need to measure light intensity in your projects — whether it’s for smart lighting, weather stations, or battery optimization — the BH1750 is one of the easiest and most reliable sensors to use. It’s a small, inexpensive I²C module that outputs light levels directly in lux, without the need for complex calibration or
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The SHT temperature and humidity sensors from Sensirion are among the most precise, reliable options out there for measuring environmental conditions. Whether you’re building a weather station, monitoring your greenhouse, or adding climate control to a smart home device, the SHT line offers features you need — with minimal fuss. In this guide, you’ll get
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If you’re building smart home systems, motion detection, lighting automation, or occupancy sensors, a radar module like the HLK-LD2410 offers a lot more than a standard PIR sensor. It can detect both moving and micro-movements (breathing, sitting still, slight motion), output distance estimates, provide configurable sensitivity, etc. In this guide we’ll go through what it is, how
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RFID technology is everywhere: access cards, metro tickets, contactless payments, and smart locks. For makers, one of the easiest ways to experiment with RFID is the RC522 module. It’s a low-cost 13.56 MHz RFID reader/writer that works with tags, key fobs, and cards. In this guide we’ll explore what the RC522 is, its specifications, wiring,
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The DRV8825 is one of the most popular stepper motor drivers in the world of embedded systems. Engineered for precision and control, it’s widely used in 3D printers, CNC machines, robotics, and countless other applications where accurate motion is essential. Whether you’re a beginner or an experienced maker, the DRV8825 provides everything you need to drive motors
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Measuring wind speed is essential for weather stations, agricultural monitoring, HVAC automation, and safety systems. The HWFS-1 Anemometer is a cost-effective, analog-output wind speed sensor, ideal for both DIY and industrial environments. In this guide, you’ll learn everything about the voltage-type HWFS-1 — its principle, wiring, and how to use it effectively with microcontrollers. What
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