A simple RGB (Red, Green, Blue) moving or scrolling LED display can be made using a few 4017 ICs. I have explained the procedure in detail. Understanding RGB LED RGB LEDs have become quite popular these days due to its three-in-one color feature, and because these can be driven independently using three distinct supply sources. […]
Newly Updated Circuit Projects:
Simple Arduino Digital Ohmmeter Circuit
In this post I will show how to construct a simple digital ohmmeter circuit using Arduino and 16×2 LCD display. We will also be exploring the other possible circuit ideas using the same concept. Circuit Objective The motto of this article is not just making an ohm meter to measure the resistance; your multimeter can […]
Electronic Engine Speed Governor Circuit
In this post I have explained an electronic engine speed governor or controller circuit using an RPM feedback signal loop through a hall effect sensor network. The idea was requested by Mr. Imsa Naga. Circuit Objectives and Requirements Thank you very much for your time. I believe this circuit would be suitable for a single […]
How Blocking Oscillator Works
A blocking oscillator is one of the simplest form of oscillators which is able to produce self sustaining oscillations through the use of just a few passive and a single active component. The name “blocking” is applied due to fact that the switching of the main device in the form of a BJT is blocked […]
Pressure Switch Water Pump Controller Circuit
A pressure switch is a device which can be used for detecting water pressure in a tank and operate a water pump motor when the pressure gets too low, or the water in the tank goes lower than a desired minimum level. In this post I have explained a water pressure controller circuit for maintaining […]
Touch Operated Code Lock Switch Circuit
This touch operated electronic door lock can be used for locking any entrance through a touch keypad. The lock’s touch feature is foolproof and impossible to crack since the touch function is required to be on 3 programmed pads together or simultaneously, otherwise the lock doesn’t respond. It is a lot convenient to open a […]