arduino

Hello everyone, First I am saying sorry for this post because I think it is not a pure electrical thing. I was looking for someone who can give me an exact source file or teach me about how to integrate bluetooth in android app to control a bot. I am just looking for a very easy code either...

Hi all, I'm working on a personal project that I prototyped using an Arduino uno. Now I'm paying a guy to make a more streamlined version (mine had several issues I didn't know how to solve) and I would like to make the prototype using the microcontroller that will be used on the final design...

My Arduino project is a level indicator that uses a Piezo transducer. I've used the "tone" function to manipulate the sound to raise the pitch when the desired level is reached. With the 'tone' function I can very precisely control the pitch and speed of the speaker. However, the project runs...

Hi guys, does anybody know how to connect DecaWave Dw1000 module to Arduino. Has someone already done this? Please give me some information about that. Thanks.

In this video I build my own diy launchpad from scratch. This project can also be referred to as a 64 button midi controller or Adafruit's untztrument sound board. I used Adafruit's tutorial for the wiring and software, and I used Tinkercad to design a case to print out on my Tronxy 3D printer...

Hi everyone. Can anybody tell me how to make a battery sensor temperature ? i tought about using LM35 and sticking it on the battery so i can figure out the temperature with arduino but it seem not a practical way for me because i think there must be some way to know the temperature by measuring...

Hi guys, this is my first post here. I expect to be just the beginning. I don't have a background in electronics but completely apaixonado right now. Also, this is my first 'project' and I am here to learn. Sorry in advance by the completely dumb questions. Lets go. First, I am looking to...

Im attempting to use Arduino connected with a GSM shield connected to power grid. The objective is to deploy the unit all over the city so that data can be received in almost real time so that power status can be known. I need to understand what chip can I connect with my Arduino so that I...

Hello I am hoping someone can help me as I am pulling my hair out trying to figure this out and have tried following the limited information I can find about this online but like a lot of the information the steps given are not always complete which makes trying to figure something out as a...

Hi all The project I'm working on requires me to use two linear 20k potentiometers to change two values, time and temperature. What I'm doing is running a heating element for a certain period of time. The user selects the time(Range 5-9 min) and temperature (100-150C) and pushes a button, then...

Hello, I have already completed a project that uses relays and a 120v circuit to open/close a set of TV monitors for my church. It's a very simple reversing circuit via the relays means a switch is turned "ON" to open the monitors and "OFF" closes them. (the 120v system was necessary because of...

I want to drive piezoelectric transducer with resonant frequency 110khz and input voltage 70 volts ac with arduino. I generated a square wave of same frequency with arduino than converted it into ac voltage using RC filter than for the step up I used transformer small getting amplitude of 67...

Hi, I'm fairly new to microcontrollers and have read multiple guides, although still asking the question. I have used Arduino for quite a long time and have developed some product concept. I am only 14 years old though. I am currently developing a wearable project, therefore size, weight, and...

Hi, I am working on a device that takes input from 40 microphones and send data to PC via Arduino. I want to use low frequency microphones (5Hz onwards) with around 200-250Hz sampling for each mic. For this purpose, my preliminary design is like this... 40 Mics --> 40 PreAmp circuits -->...

Hello Friends, Please have a look in the video below. I am working in a project like this. This guy presents his code and circuit in his video description, code is perfectly compiling but the circuit is not good. Please help me in designing a good circuit for this project with all buttons and...

**broken link removed** I build my robotics where i used stepper motor as actuator and Matlab/Simulink with arduino as controller . my control signal output in (rad/sec) and i want to send this signal to stepper motor pulse pin . the situation that my control signal output are variant depend on...

Hello Friends, One of my friend started a Badminton Court. So i would like to present him a Scoreboard. I got some little knowledge in electronics. I am new to Arduino. I can buy him a ready-made one, but there is no fun in that. So friends please help me do design a scoreboard with HOME and...

I want to use one of the newer LCD character displays that has a generous 40 x 4 character screen. This is done using 2 controllers in effect, with two enable lines. Has anyone tried this with an arduino? I am not sure if you can define two separate LCD objects, and at the same time share the...

Talking about Arduino UNO, some UNO has built-in LED (L LED permanently connected to 13th pin) in the board and dafault 'blink' program use it to blink the LED. But during other projects, many programs uses same 13th pin for other type of signal out. In this time, the signal has a 1k and a LED...

Hi guys, Lovely community here. So i got into the bandwagon of the ESP32. I am planning to build an entire data acquisition built around the ESP32. Would really appreciate it much if i were to get help from all of you. It would be a learning experience for all of us. So basically here are my...

I was playing about with transistor amplifiers nd I built this class D amplifier intended for use with the arduino ( or any other microcontroller) https://siliconjunction.wordpress.com/2017/02/28/class-d-amplifier-for-the-arduino/ Thanks Matt!

Here's a video of it in operation. I'm pretty happy with how it turned out :)

Hi all, I am essentially working on a research project in a lab where we would like to synchronize multiple Brushless DC motors or offset their phases (30 degrees offset, perfectly synchronized, etc.). Therefore, we are attempting to control a BLDC motor by powering the 3 coils in the proper...

Hi, I have a knock-off saleae 16 logic analyzer hooking up to an MM5451 (datasheet: **broken link removed**). I'm driving it via the SPI pins on an arduino. Connected to the data pins of the MM5451 are the cathode pins of an RGB LED (the common anode of which is connected to +5V). The code and...

Hello, I am a designer working on a university project with a small understanding of technology building hence why I am turning to ask from you. I want to create a product which is essentially a scales which measures weight and links to LED lights which will change from red to green at a range...