Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Infrared remote controllers are everywhere around us. The majority of home appliances are controlled using infrared remote controls. In this article/video, we learn to build a device that can decode (almost) any IR remote control and use the instructions to switch the relays (loads). So we can...
Greetings Everyone, May i ask does the Vi(Input Voltage) means that the voltage that can be input to the Y0-Y7 or Z is at max 5V ( The Vcc i used is 5V). In my project, the input voltage for the Y0-Y7 is 12V, will that spoil the multiplexer? If so what multiplexer should I use for my project...
Please forgive if some information or diagrams are missing, I will provide any information you consider necessary if you ask for it in the thread. As you might soon discover I have no background/knowledge in electrical engineering.
I will start working on a project to build an electric rat...
I am attempting to make a circuit with the KT3170 chip. Outputs from chip sent to Arduino pin. Arduino will receive 4 numbers and display them on the LCD screen. It's working
But sometimes the Arduino will take the value from a number 2 times.
Like I dial 1 . Arduino will receive a 11 .
I...
OS: Linux(Ubuntu Mate)
IDE: Arduino IDE
Example: asm_terminal (USB library code for interfacing ARDUINO USB HOST SHIELD with ESP WROOM 32)
I am working to interface Arduino USB host shield with ESP WROOM 32. I have added the ESP 32 board to the Arduino IDE and able to run basic example codes on...
FM transmitters/receivers are among the top favorite circuits of any electronic enthusiast. In this video, I have introduced a complete digital FM receiver design that has equipped with an LCD screen and three push-buttons. It can search for the FM signals from 76MHz to 108MHz manually and...
The fire alarm project based on Arduino is one of the most suitable projects for beginners. Apart from being a simple and easy to understand series, it is also due to the relatively cheap price of materials. For flame sensors, it can be found on the market for only 2 dollars. This project is...
Greetings Everyone.
I am looking to develop a small educational project as an end of term project for my Graduate programme. The concept is to identify a moving object and then categorise it as either 'FRIENDLY' or 'ALIEN'.
The term 'FRIENDLY' means they will be known to the system and the...
So I recently got my hands on a box of ne-2 neon bulbs and I wanted to make a 7 segment display with those bulbs but I need an opinion on how to interface an Arduino to them. I was thinking I could run the bulbs in parallel, (like in the picture below) and have a relay on each bulb. (Yes, I know...
How to Make DIY Home Automation System Using Wemos D1
A simple home automation project allows you to control home appliance from anywhere. Blynk provides very good and attractive interface.
Story
Video
Video
In this project we are going to build simple home automation system in which we can...
It's been quite some time since I've used OSC on Arduino, in fact so long that the 2 libraries I used to use seem to have gone by the wayside (ZOSC and ArduOSC).
I'm wanting to use the outcome of part of the address in my OSC message to make decisions on what to do. More specifically I've used...
I have been working on an automatic watering system using 3 capacitive sensors with G, Vcc and Signal wires. I have tried assigning these sensors to various combinations of analog ports on an arduino nano. No matter which ports I connect the sensors to, when I try to read each port, I find...
This article is meant to capture the path I followed when I was selecting an alternate small footprint, low-cost alternative to Adafruit’s Trinket.
In the past I’ve used Adafruit’s Trinket (https://www.adafruit.com/product/1500) and Trinket M0 (https://www.adafruit.com/product/3500) platforms...
Hi, I have uploaded on my Arduino Uno the attached code, and I am facing the following issue: If the temperature is set to max (about 18mV on the Thermocouple) then if I rotate the pot to minimum temperature, the voltage on the TC starts to reduce, until it reach about 17mV. Then it goes very...
Any reply is greatly appreciated!!
I wanted to confirm about the QCIF timing diagram from datasheet(shown below). The ON time of the HREF for both vga and QCIF is shown as 640tp (tp=2tpclk). So does that mean each line of QCIF (174x2 bytes) take 640tp seconds? So in that case, bytes of a QCIF...
A Simpler Weight Scale
Following up on the articles about Sparkfun’s OpenScale projects, this article uses the exact code, but uses a much neater scale. I found Amazon was carrying this pretty cool sensor package (MakerHawk HX711 Load Cell) that included the HX711 board, the load sensor, and...
Hello,
Background:
Large POE switch (24 ports) that I would like to utilise for home use. These units are normally stored in a server room so noise is not really an issue, for me however, it is. The plan was to replace the existing 3 x 40mm fans with 2 x 120mm fans using my own fan controller...
Hello, I am using an Arduino Uno for a soldering station project. I am powering the Arduino through USB port using a L7805 regulator and I saw that if I remove the USB power, the ON led still lights up when I am powering the soldering station. Also, the other led's are semi light up. The Vin and...
Hey everyone!
I am making an ESC of my own we have been using Mosfets,created our power supply and driver circuits using opto couplers, and using H-brigde for switching the mosfets in perfect order to run the motor
everything is going fine except the programming part. I have been doing it for...
Hi
I wish to build circuit as per these links:
https://dccdiy.org.uk/motor.html
https://dccdiy.org.uk/downloads.html ( 4th download down)
Is the 12F629 still current or is there a later better option now ?
Can PIC be loaded now from pc/USB (like arduino) and not via separate...
I tried to get analog values of each LDRs through a multiplexer,but the problem is i couldn't get what i need,it always give me the same value(1023) when i was changed the light intensive,please help me guys,,i will attach the code and protues filre..Thankyou...!
Hey guys first of all Im completely new to electronics and also to this forum so Im sorry if I'm doing something wrong.
Here goes my doubt. Hope you can help me with this.
What happened:
I bought a darts board (ED310 Canaveral) with electronics that allow multiple players to play and show the...
Hello, this is my first post here so please forgive me for any errors posting this.
I have an Uno programmed to play a note on each of 3 buttons. Originally this worked fine as it was using a set scale of 3 notes but I wanted to use a pot to select one of 3 scales for each of those buttons to...
Hello Friends,
I have an idea about this. For making this I need joystick, Arduino,bluetooth Module(HC05). But I need to know how to connect HC-05 as a bluetooth keyboard interface? And how to program the whole thing?
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