In this tutorial, we are making an automatic plant watering/irrigation control circuit. This circuit is used for automatically water your plants, garden, etc. usually we don’t have time or we forget watering our plants and … Read more
2n4401
In this tutorial, we are making a project on a Cold sensor switch. This circuit is very sensitive and can easily be used to sense cold or low temperature, it can activate any device connected … Read more
Cold Sensor Switch using NTC Thermistor
In this tutorial, we are making a moisture sensor switch circuit. This is one of the simplest circuits of a moisture sensor that can be used to switch on any equipment on a certain level … Read more
Moisture Sensor Switch using 2n4401 Transistor
In this tutorial, we are making a simple transistor based solar battery charger with auto cut off function. When the battery gets fully charged the solar panel keeps running and this can result in battery … Read more
Transistor Based Solar Battery Charger With Auto Cut Off
In this tutorial, we are going to make a Doorknock sensing doorbell that activates when someone knocks on your door. This circuit is quite sensitive it can detect even a small knock and it’s super … Read more
Door Knock Sensing Doorbell using Piezoelectric
In this tutorial, we are going to make a very simple circuit for an Automatic garage or storeroom light. This circuit isn’t limited to only garages or storerooms, you can use them anywhere you need … Read more
Automatic Garage Or Storeroom Light using 2n4401
This is a tutorial for making a sensitive mic circuit that boosts faint sounds from distance. It is quite sensitive and provides good gain to weak audio signals. This circuit is small and straightforward to … Read more
Sensitive Microphone Circuit using 2N4401 Transistor
In this tutorial, we are making a super-sensitive vibration sensor switch circuit. This circuit will sense the vibration and sound around it and switch on the relay. Any AC or DC appliance connected with the … Read more
Super Sensitive Vibration Sensor using Transistors
In this tutorial, we are going to show you two different projects of Simple burglar alarm circuits. There are lots of burglar alarms available in the market which you can use to build with different … Read more
Simple Burglar Alarm with Transistor 2N4401
Sound Activated LEDs can turn the LED ON or OFF when any of the sound signals are received by the circuit microphone. This is a basic Sensitive Sound Activated LED Flasher. The circuit is very … Read more
Sound Activated LED Flasher Using 2N4401 Transistor
In this project, we will discuss the “Door Left Open Indicator Alarm Circuit”. A door alarm is a miniature electronic device that is connected to the door and used to identify whether the door is … Read more
Door Left Open Indicator Alarm using Reed Switch
Have you ever forgotten to switch off your car headlights? That profound discharges the vehicle battery and till you return to acknowledge; it turns out to be very late. Therefore, the battery gets completely discharged … Read more
Automatic Car Headlights with Transistors
In this tutorial, we are demonstrating the project of the “Simple Motion Sensor Doorbell”. Motion Sensor Doorbell is the essential development of the home security arrangement. All things considered, this extra layer of security gives … Read more
Simple PIR Motion Sensor Doorbell with 2N4401 Transistor
In this DIY, we are going to demonstrate a project of “Home and Office Basement Flood Alarm”. Even though floods don’t generally rate high on our list of concerns. On the off chance that we … Read more
Home & Office Basement Flood Alarm using 2N4401 Transistors
This basic automatic emergency light will automatically get actuates when the mains power goes off. The circuit is economical and uses a few parts and it is likewise a better and longer life. An Automatic … Read more
Simple Automatic Emergency Light using PC817 Optocoupler
In this tutorial, we are demonstrating a field strength meter circuit. A field strength meter is a valuable circuit to detect and quantify the RF signals and their strength. The field strength meter is really … Read more