I'm at a loss with this, so any help would be greatly appreciated.
I've developed an Android application that's very simple: you push a <Button> on the device layout and it counts and updates the UI. This is all working fine.
What I need this app to do is send a signal down the USB cable that's connected to an Arduino.
I understand the Arduino would need to listen for some data being passed across or something.
I don't even know where to start.
Related
I am making a prototype for my final paper (Electronic technician) and the purpose is: A real-time car tracker using GPS and arduino UNO to this, and an android app (made in android studio with Kotlin) to connect the arduino and receive some data to help the user in case of accidents, robbery and theft. The main problem is, how can I connect the arduino GPS and the android app in long distances? With internet? For this, we thought about using the GSM800L module to this function, but we don't have any Idea to implement this two ideas together, we know Kotlin has some functions to GSM, however, we don't know how to use it in the code. If someone has the answer to this questions, I would really aprecciate it.
You need a mediation device.
Arduino GSM in the car
Android app
Server of some sort, with a database and connectivity to the internet
Arduino sends data over HTTP or even better using MQTT.
Android app read data from server or even better get notifications and update the screen.
I have searched a lot for the past weeks but have not found any solution. I am new to Android, especially Bluetooth programming. I did read the Bluetooth developer page but it is too complex.
I need to send a String (ex: 40%) continuously from an Android app to another app on a paired Android device without using a button. It should be automatic. I need to know how to identify the paired device and send it the send and how to make the paired device receive this string in its app.
Any help please on how to do that please? I will be very grateful. Thank you.
I am working on a very small project, where I have to send a signal via usb to some kind of micro-controller board.
I am completely new to this, although have enough android experience, so just need answers to few questions for now:
1.) Is it correct that I will need some kind of Arduino kit to get even started ?
2.) Isn't there any way by which I can test this using day to day devices or simulator, rather than purchasing the kit itself ?
Please forgive if the question looks silly.
Thanks
Sure! you can communicate with your Android or any other languages like (C#, Java, Php, Python...) with Arduino or other micro controller by USB.
Arduino is very easy to start and you can send signal and perform
the required task.
As you code Android, check this you get clear idea.
Yah! Arduino emulator where you can check or
test. check here
Get to know about Arduino Here
Start with this program (Hello World of Arduino)
Hope it helps
You cannot send a signal out of the Android USB port. You will need to communicate with another device via bluetooth or WiFi, and have that device communicate via USB to the microcontroller.
If you want to avoid purchasing anything, you could write a small web service that runs on a computer hooked to your microcontroller. When your android app runs, it would communicate to that web server, which would in turn communicate with the microcontroller.
Then, when you are ready to purchase an intermediary device, if you design your code well, you'd be able to repurpose the code to communicate via that device instead of the web service.
i am working on an android app in which I need to only listen for incoming devices an log the data they are sending using Bluetooth, device sending data is basically a digital Bluetooth enabled thermometer which just sends the data. Problem is i don't know where to start as i m new to android programming. Just a step by step Procedure would be enough to guide me on the right track . i tried Bluetooth chat example but i didn't took me any where also i wasn't able to understand it.
Regards,
Rafiq Ahmed
First thing you need is to know how to make the connection with the thermometer. I suppose that, since the device is paired to the smartphone, you only must to manage the connection as a server (On the android-phone). Here you got a summarize:
Change Bluetooth permissions:
http://developer.android.com/guide/topics/connectivity/bluetooth.html#Permissions
Enable and set up the bluetooth: http://developer.android.com/guide/topics/connectivity/bluetooth.html#SettingUp
Find the device: http://developer.android.com/guide/topics/connectivity/bluetooth.html#FindingDevices
Connect with it: http://developer.android.com/guide/topics/connectivity/bluetooth.html#ConnectingAsAServer
And manage the connection:
http://developer.android.com/guide/topics/connectivity/bluetooth.html#ManagingAConnection
And last thing, I recommend you to pair the device before running the application, at the adjust menu of your mobilephone. Since that, follow the previous steps and all will be fine. If you have some doubt ask me, I had the same troubles about bluetooth connections with arduino and HC-06 bluetooth device
Hope it helps
am developing an application where I can get data from ELM327 and display it on an android device.But I have a doubt,the ELM327 is not controllable,I mean it cant keep sending data automatically to the android device,so how would I be able to pull data from the ELM327.I am really stuck here.So help would be appreciated.Thank you!
Can anyone help me with the type of commands I have to use in android to get responses from ELM 327?How would I only receive speed and rpm?How can I read that data and display it on the android device?
The ELM device is a command/response device which requires you to send a command in order for the ELM to process it, communicate with the ECU system, then format and deliver the response back to you. You won't get unsolicited messages (responses) from an ELM327 chip except on power up when the signature is sent, or unless you set the device into a monitor mode.
The ELM327 is that you use Bluetooth.
I'm trying to make an application to read data adnroid ELM 327, you could.