Electrical engineering and electronics has two classic instruments since the beginning of history of the two engineering sciences - oscilloscope and function generator. Oscilloscope is an electronic visualization instrument for graphic representation of the electrical signals which can vary over time. Oscilloscope presents the values of the electrical signals in the form of coordinates in a … [Read more...]
Raspberry Pi Car PC System : List of Needed Hardwares
Previously we talked about DIN slot in Raspberry Pi Car Starter Guide and OBD II. Here is a list of hardwares needed to build Raspberry Pi Car PC System on ordinary old cars & a budget within $200 or so. You can use Orange Pi instead of Raspberry Pi, we talked about the single board computers in a separate article. The old illustration is possibly helpful : Raspberry Pi Car PC … [Read more...]
Digital Vernier Calipers For Dummies
China is a country which manufacture and supply things at a cost which make precise, costly dirt cheap. Vernier Calipers is nothing new, all who had science in Twelfth Grade could use a vernier calipers. Needless to state that, most high schools made the interesting instrument a bitter topic by asking odd questions. Whether students of non-science can use the traditional analogue instrument that … [Read more...]
Arduino 8 Digit 7 Segment LED Display Buying Guide
Unlike TM1637 4 digit 7 Segment LED Display, buying 8 digit 7 segment LED display is not so easy to take decision. These Are Driven By MAX7219/MAX7221 driver which supports LED dot matrix too. 8 digit is maximum number the driver supports. It is towards pure electronics, you can separately buy the basic electronic components and build on breadboard. Arduino has direct official support of the … [Read more...]
Arduino Multifunction Shield (HCARDU0085) : Features
This is kind of review out of marketing research as ex-willing consumer. Initially I thought that it is Made in China and has lot of sensors. Arduino Multifunction Shield has 4 digit 7 segment led display, 4 SMD led, 10k potentiometer, 3 push buttons, buzzer and lot of interfaces. It is not Made in China, it is just a costly thing with very less features. $2 would be correct price for it. This is … [Read more...]
List of Budget Saving Cheap Arduino Modules And Components
We know that many peoples from good families on this earth unfortunately on budget while there are different type os humans. Here is best list of budget saving cheap Arduino modules and components on web with which you can create useful projects and will not repent. Cheap Arduino Modules And Components : Forewords For Those Are At Budget For electronics, we talk about … [Read more...]
China Bicycle Speedometer Review
Possibly most families except the misfortunate have a bicycle. The "premium" China bicycle speedometers sells at $5 to $7 on Ebay, Amazon. Initial plan to develop a DIY speedometer with Arduino and TM1637 LED display dismissed as the unit costs lesser than half than DIY. Here is China bicycle speedometer review with infographics explaining functioning parts, pdf manual and how it really performs … [Read more...]
Convert Computer Power Supply To Breadboard Power Supply
All of us have, had died desktops with quite costly ATX, SFX power supply units. Those units are really great for powering DIY electronics compared to the cheap made in China circuits with AC mains to DC converter. The supplied power by a computer power supply would be stable. Here is how to convert computer power supply to breadboard power supply. How To Convert Computer Power Supply … [Read more...]
Breadboard Wiring Rules & Useful Hacks
It is not another article on breadboard wiring rules. Human who can read this webpage knows what is breadboard, breadboard power supply etc. Here are some extreme breadboard wiring rules & useful hacks to make the things easy for complicated circuits. Actually we are working with through hole technology components not SMD components, so 1960-70's various things work better. I will use least … [Read more...]
Raspberry Pi Cardboard Robot TJBot With IBM Watson API
In another article we have shown easy example of using IBM Watson's power of machine learning as a WordPress Plugin which can analyse the emotion or tone of post's text. Instead of server, if we use a hardware, the thing becomes as smart object and basic example of Internet of Things (IoT). In this guide we point how to use Raspberry Pi like single board computer & IBM Watson API to create … [Read more...]
What Resistor You Need For Which Colour Of LED
Of course you can blink a LED with Arduino or more easy - connect a LED to light it up. Previously we talked about basic electronic components, color coding of resistors, our free tool for calculating value of resistor and a guide possibly most important to may - multimeter guide for dummies. At minimum you should know what resistor you need for which colour of led, what should be the supply … [Read more...]