Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Everything about electronics
Everything about electronics
At some time or another you may run out of pins on your Arduino board and need to extend it with shift registers. This example is based on the 74HC595. The datasheet refers to the 74HC595 as an “8-bit serial-in,…
Introduction Although using a NTC can make your temperature measurement very easy. But for industrial purpose you can use a thermocouple for better stability and wider range. Thermocouple Thermocouple consists of two different conductors forming an electrical junction at different…
We all know that we can simply drive a relay with the help of transistor. But this method is not isolated. In many places we may require an isolation between the relay and the driving section. In those places…
Instantaneous Voltage and Current As the name suggests, AC Voltage and current continually alternate. If we draw a picture of the voltage and current waveform over time, it will look something like the image below. Depending on the type…
Learn how to use EEPROM, short for electrically erasable programmable read-only memory, on Arduino boards. The microcontroller on the Arduino boards have 512 bytes of EEPROM: memory whose values are kept when the board is turned off (like a tiny…
You have come to the place to learn about connecting an Arduino to other devices, whatever software is running on those other devices. The Arduino can "talk", (transmit or receive data) via a serial channel, so any other device with…
A serial display can easily be made by adding serial to parallel shift resisters. A serial-in parallel-out shift register (74HC164, 74HC595, CD4094…..) can be added to a 7-segment display as per the tutorial provided in this link. The adding of…
A voltage buffer, also known as a voltage follower, or a unity gain amplifier, is an amplifier with a gain of 1. It’s one of the simplest possible op-amp circuits with closed-loop feedback. Even though a gain of 1 doesn’t…
In many cases we require to drive high current output but at a cost effective manner. Either we use a high current transistor or a discrete Darlington pair to drive high current load. But the common way is to use…
As a designer the number of available ports on a microcontroller are always less while designing an embedded circuit. To get more out of a single controller chip we need to have an I/O expender, so that we can use…