Mini Weather Station using ATtiny85 and DHT22
Introduction Weather matters to all of us; good weather changes our moods, mind, and feelings. However, sometimes unexpected weather ruins o…
Afzal Rehmani2 min15k
Afzal Rehmani
186 projects published
Afzal is the founder and editor of Circuits-DIY.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)
Afzal Rehmani2 min15k
Interfacing DHT22 Temperature Sensor with XIAO RP2040
Overview The Seedstudio XIAO, powered by the RP2040 microcontroller, has quickly gained popularity in the maker and electronics community du…
Afzal Rehmani5 min4.8k
Light Meter using XIAO RP2040 & OLED SSD1306
Overview Measuring light intensity is a crucial aspect of various applications, from photography to environmental monitoring. A light meter…
Afzal Rehmani5 min5.6k
Earthquake Detector & Alarm using XIAO RP2040
Overview Earthquakes are scary natural disasters that can cause a lot of damage and danger. Imagine if there was a way to know when an earth…
Afzal Rehmani4 min5.2k
Voice Recording with ISD1820 Module and ESP01
Overview Voice recording technology has come a long way, and it has become an integral part of various applications, from voice assistants t…
Afzal Rehmani3 min14.4k
How to make a 12 Volt Lead Acid Battery Charger Circuit
In this tutorial, I will tell you the best way to build a basic Lead Acid Battery Charger Circuit. This circuit utilizes to charge Rechargea…
Afzal Rehmani2 min41k
Heart Rate Pulse Sensor - BPM Meter using OLED & ESP32
Introduction Pulse sensors are used in several projects for athletes, gaming, home appliances, and mobile phone developers where there is a…
Afzal Rehmani3 min15.2kThe Ultimate Guide to Rigid Flex PCB: Everything You Need to Know
The world of electronics is rapidly evolving. Every year, devices become smaller, faster, and more powerful. This presents unique design and…
Afzal Rehmani8 min2.2k
Your First PCB Prototype for Only $1: PCB Manufacturing
In the fast-paced world of electronics, getting your ideas off the ground quickly and efficiently is crucial. Whether you're a seasoned engi…
Afzal Rehmani3 min1.9k
How to make your own ESP32 Breakout Board - Bare Minimum
Introduction The ESP32 is a powerful microcontroller module that has gained immense popularity among electronics enthusiasts and IoT develop…
Afzal Rehmani7 min17.4k
DIY Control Panel Design - Electrical Contactors and Relays
In the DIY electronics field, the design and implementation of control panels play a crucial role in ensuring effective circuit control. Thi…
Afzal Rehmani2 min3.9k
CR123A Button Top Lithium Manganese Dioxide Battery 3V
Overview In today's technology-driven world, the demand for reliable, long-lasting power sources is higher than ever. Among the various batt…
Afzal Rehmani2 min2k
LR1130 Battery Alkaline Manganese Dioxide 1.5V
Overview The LR1130 battery, also known by designations such as AG10, 189, LR54, and L1131, is a widely utilized coin cell battery recognize…
Afzal Rehmani2 min3.1kPage 3 of 15, 186 projects in all