Blind people have big problem on road because they cannot see object in front; so to solve this we made an Ultrasonic Blind Stick Circuit using Arduino The stick actively senses objects and uses a buzzer to warn a blind person with sound. We can build this low cost project easily using components such as […]
Mini Projects
Simple Humidity Level Detector Circuit
Humidity is presence of water vapor in air or soil, also too much or too less humidity is harmful for plants and for storage; so we need a Simple Humidity Level Detector Circuit. This small circuit uses only a few components and provides an LED indication when the humidity crosses a preset level and we […]
12V Mini Emergency Light Circuit with LDR
12V Mini Emergency Light Circuit with LDR is simple project to make; here, light gets ON automatically when dark and it works with bright white LED and uses 12V battery. Also, the circuit is good for home, garage and emergency. Circuit Working: Parts List: Components Values Quantity Resistors 10k 1/4 watt 1 2.2k 1/4 watt […]
Simple Dark Sensor Circuit for Security using IC 555 timer
Simple Dark Sensor Circuit for Security using IC 555 timer is useful project for security, it senses low light and turns ON the buzzer or light. Also, the circuit uses an LDR for light sensing and works well in night lights and alert systems. Furthermore, it includes a 555 IC, an LDR, resistors, a capacitor […]
USB Lamp Circuit for Portable Lighting
USB Lamp Circuit for Portable Lighting is good for portable light, as it is easy to use and takes power from USB port of 5V; also it have rechargeable battery which are more useful. USB port give only 100 mA so use LEDs less and in addition this circuit have transistor, diodes, capacitor, resistors, LEDs […]
Simple Voltage Splitter Circuit using uA741 Op-Amp
This Simple Voltage Splitter Circuit using uA741 Op-Amp is a useful and easy project to make; it split one power supply to two equal parts and make virtual ground in middle. Also, circuit is good for project that need two power supplies but have only one power source and current depends on op-amp specifications. Here, […]