In this post I will be talking about the Chinese M4430 digital ammeter, voltmeter module which is a really neat, compact digital meter that you can mount on a panel. Whats great about it is that it is designed to measure and show us both the DC voltage and the current at the same time. […]
Digital
0 to 99 Digital Pulse Counter Circuit Diagrams
The proposed 00-99 digital pulse counter circuit becomes very handy in places where you need to keep the people organized in some specified order. Operating details of the digital counter As may be referred the circuit employs the popular 555 IC to genearte the pulse clocks. The pulse counting is done with the help of […]
2 Digital Potentiometer Circuits Explained
In this post I have explained a 2 simple, single chip digital potentiometer circuits which can be controlled through a single pushbutton, a dual pushbutton (up/down) or even through external digital (CMOS/TTL) input triggers. 1) About DS1869 Dallastat TM is a rheostat or potentiometer. This unit delivers 64 conceivable consistent tap outputs over the over-all […]
12 Basic Digital Logic Circuits Explored
In the following paragraphs I will try to explain the most basic foundations of digital electronic circuits: namely logic gates and logic flip-flops. Whether it is a complex and larger digital circuits, or as simple as a BCD counter, for example the 7490, or a large-scale integration (LSI) microprocessor chip, eventually all of these comprise […]
Simple Digital Stopwatch Circuit (4-Digit)
In this article we’ll study a digital stopwatch design configured around the very popular IC LM555 in conjunction with a 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926). Written and Submitted by: Jennifer Goldy Circuit Operation IC MM74C926 is internally made up of a 4-digit counter, an output latch up stage, a npn output […]
Monitoring State of a Switch (Digital Read Serial) – Arduino Basics
This Arduino basics discusses the method of implementing a code through which the ON or OFF state of an external push-button could be read or monitored within the Arduino. Digital Read Serial Here I have explained through an example how to monitor the state of a switch by performing serial communication across your Arduino and your PC via USB. In excess to your […]