Simple Frequency Counter You may have already seen various projects over many websites named Frequency counter, Digital Frequency Counter etc. I’m posting just another of them. Showing the use of timer/counter of AVR micro controller (Atmega8) in one of it’s form. This circuit can be used as a simple micro controller project for your engineering courses. Frequency of a …
Display is the necessary part of any machine whether it is any home appliance or industrial machines. Display not only shows the control options to operate the machine but also shows the status and output of the task performed by that machine. There are many types of displays used in electronics like 7-segment display, 16×2 LCD display, TFT …
Interfacing 16×2 LCD with Atmega16 AVR Microcontroller in 4-Bit Mode Read More »
WiFi connected universal remote with smart phone webapp. Things used in this project Hardware components Arduino MKR1000 Arduino Nano R3 General Purpose Transistor NPN Triggers the PNP transistors of IR LED array Resistor 1k ohm pulls down NPN transistor IR transmitter (generic) IR LEDs. Get wide angle if you have a choice General Purpose Transistor …
In my last tutorial I created a NodeMCU based Duino Coin Miner. It is an awesome little miner that sits on my desk and mines few cents a day. However, adding these miners to my home network choked my WiFi router. Home Appliances and Smart Devices connected to the router constantly started dropping off. To …
NRF24L01 Tutorial – Arduino Wireless Communication Read More »
In this tutorial, I will show you how to achieve wireless communication of variables between 2 Arduinos using the HC-12 module, that operates from 433,4-473 Mhz. HC-12s are wireless modules for arduino to arduino communication, because they can send multiple variables over long distances-ones up to 1km-using only 2 digital pins, not even PWM pins, …
Wireless Communication of Multiple Variables Between 2 Arduinos Using HC-12 Read More »
I have a solar power installation using an Omnik string inverter. Omnik is a China based manufacturer of PV inverters and they make extremely efficient devices. Optionally, you can install a WiFi module to make it “connected”. I am very content with the device, with two notable exceptions. It “phones home” to a China based …
Omnik Inverter Off It’s Cloud and on My MQTT using Arduino Read More »
I have been working on this project for a while and whilst it is still under development I decided to write a short guide after several requests to do so. The dimmer uses an interrupt driven XL-Maxsonar EZ1 ultrasound range finder to measure the distance between the sensor and your hand. By moving your hand …
Ultrasonic Dimmer (Without Humming Or Buzzing Noise) Using Arduino Read More »
In this article, we are going to read the colors using the TCS230 color sensor (RGB Sensor) and Arduino Uno. The TCS 230 color sensor senses the color light by using the photodiodes. The sensor converts the readings from the photodiode into a square wave by using the light to frequency converter. The frequency of these …
Interface Arduino and Color Sensor – RGB Sensor TCS230 Read More »
Monitor lightning activity and get alerted on dangerous situations. Things used in this project Hardware components Arduino MKR1000 × 1 MikroElektronika Thunder click × 1 Female/Female Jumper Wires × 1 Software apps and online services Microsoft Azure Microsoft Visual Studio 2015 Arduino IDE Story Introduction Lightning is a phenomenon that always attracted man’s interest. Reasons …
Presented here is an ATmega328P microcontroller-based ultra low power sensor hub using nRF24L01+ radio frequency (RF) transceiver modules having transmitter and receiver units. The transmitter sends humidity and temperature values of a place to the receiver kept at a remote location for display on an OLED module. The nRF24L01+ module used in the receiver unit …
Ultra-Low-Power Sensor Hub Using nRF24L01 Modules Using Arduino Read More »
