Fire Alarm Circuit Using NTC Thermistor and BC547 Transistor
A simple heat-activated fire alarm built with a 10k NTC thermistor, a 1k preset and a single BC547 transistor. Includes the full s…
Afzal Rehmani5 min688
Afzal Rehmani
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.
Afzal Rehmani5 min688
The Raspberry Pi: Revolutionizing Computing for All
In the realm of affordable and versatile computing, the Raspberry Pi stands as a game-changing innovation. Launched in 2012 by the…
Afzal Rehmani4 min1k
Where to Buy Toggle Switches: Best Toggle Switch Supplier
Toggle switches are essential components in various electrical applications, from simple household gadgets to complex industrial m…
Afzal Rehmani3 min885
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 va…
Afzal Rehmani2 min847
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…
Afzal Rehmani2 min889
L512F Sensata-Crydom Thyristor Bridge Rectifier Module
Overview The L512F Sensata-Crydom Thyristor Bridge Rectifier Module represents a significant advancement in power electronics, des…
Afzal Rehmani2 min831
ESP32 with Stepper Motor 28BYJ-48 and ULN2003 Motor Driver
Introduction The article explores the integration of the ESP32 microcontroller with the Stepper Motor 28BYJ-48 and the ULN2003 Mot…
Afzal Rehmani5 min954
Heart Rate Monitor using Pulse Sensor – BPM Meter
Introduction Pulse sensors are used in several projects for athletes, gaming, home appliances, and mobile phone developers where t…
Afzal Rehmani3 min961
ESP8266 WiFi Module Holder
Introduction The ESP8266 WiFi module has revolutionized the world of IoT (Internet of Things) by providing an affordable and versa…
Afzal Rehmani2 min486
ESP32 Cam Housing - 3D Printed
The ESP32 Cam is a compact and powerful development board that combines an ESP32 chip with a camera module, making it ideal for va…
Afzal Rehmani2 min567
DIY Power Bank using 18650 Cell
Introduction: In today's technology-driven world, having a reliable power source is crucial to keep our devices charged and ready…
Afzal Rehmani3 min1.1k
18650 Battery Charger with 3D Printed Case
Introduction 18650 batteries are popular and versatile power sources used in a wide range of devices, including flashlights, lapto…
Afzal Rehmani3 min548Page 1 of 5 · 49 projects