In this article I have explained how to make a simple 2-step Arduino programmable timer circuit, which can be used to switch an electrical load ON/OFF with independently adjustable ON and OFF timings. For example if you want a light to remain ON for 24 hours and OFF for 2 hours, you can simply do […]
Arduino
Password Security Lock Circuit Using 4×4 Keypad and Arduino
In this post I will show how to construct a password security lock circuit, which can be accessed by a 6-digit password. To be more precise it is alpha numeric password. Hardware for this Project We are going to utilize 4×4 keypad, which consists of 0 to 9 decimal values, two special character ‘#’ and […]
How to Interface Servo motors with Arduino
In this post I have explained what servo motor is, how it functions, how to interface with microcontroller and what make this motor special from other motors. Being an electronics enthusiast we would have come across many kinds of motors, here we are going to take a look at special type of motor called servo […]
Interface Accelerometer ADXL335 with LED and Arduino (Circuit Diagram)
In this post, we are going to see how to use an accelerometer with arduino and extract useful readings, which will be printed on serial monitor of IDE. We will also be exploring how accelerometer works in a nutshell and its applications. How the Accelerometers Works Accelerometer is an electromechanical device, which is used to […]
GSM Pump Motor Controller Circuit using Arduino
In this post I will show how to construct a farmer friendly GSM pump motor controller circuit which couldturn on and off the irrigation system remotely from anywhere in the world via cellphone SMS and return you with an acknowledgement message. The idea was requested by Mr. PG Ragavandir. The Design Agriculture is one of […]
Arduino Frequency Meter Using 16×2 Display
In this article I will show how to construct a digital frequency meter using Arduino whose readings will be showcased on a 16×2 LCD display and will have a measuring range from 35 Hz to 1MHz. Introduction Being electronics enthusiast, we all would have come across a point where we need to measure frequency in […]