I'm a newbie in this world.
I wanna build an application to remove some device.
Ex:
I wanna turn on or off lights and use my smartphone (Android) to do.
But, I don't know how to do? Can you show me all of steps?
Thank you so much!
Use a Raspberry Pi (runs linux).
You can have the RPi general purpose I/O lines to control, say, relays for lights etc. and then use the many Android apps to remotely control it.
Related
I have an Ubuntu 18.04 server on a laptop that has bluetooth adapter. I also have a led strip from China which also has a bluetooth adapter. I can control my led through an app on my phone.
Is there any way to successfully connect to the led strip with my linux laptop and control it?
If so, how could I know which code / key (or I don't know how this bluetooth control works, sorry) is assigned to a color? So basically, I don't know what command should I send to the strip.
Can anybody please write an example program for me?
I tried the rfcomm, bluetoothctl and bluetooth-sendto but they didn't work. :(
Hope we can solve my problem.
You'll need to reverse engineer your device :
with little research I found this
http://nilhcem.com/iot/reverse-engineering-simple-bluetooth-devices
I want to create a TAS that can play the Nintendo Switch games that are only compatible with the joy cons.
There are turbo pro controllers in the market but there is no turbo joy cons, so my next idea is one of two:
To use the Bluetooth to connect a devise that I could control with my PC and can be connected to the Nintendo switch via Bluetooth (or USB) and trick it into thinking that it is a joy con and not a pro controller.
Use the idea above but the devise is the joy con itself, in this case, I would have to connect the joy cont to the PC and command it while it is still paired with the Nintendo Switch
Is there any way to achieve what i'm looking for? Thanks in advise.
Also, if there is a better branch in stack-overflow to post this question I will move it.
Looks like it's already been done, and you'll need a product called vJoy.
https://www.pcgamesn.com/nintendo/nintendo-switch-joy-con-pc-guide
Looks like you'd need to reverse engineer the communication protocol used by those controllers and then emulate that protocol with software. Here is a resource I have found regarding RE bluetooth. Another one I have found here. Redfang may help you in that endeavor, it is software that helps you find bluetooth addresses of devices that you you can't discover normally.
Another idea I would have is to open your controller and solder on some wires to a micro controller, such as an Arduino, Raspberry or something similar to the buttons and analogue controllers and 'input' the commands that way.
Unfortunately I can not offer you any more advice. I hope this helps in some way.
One possible way is to use JoyCon Droid app in Android to controll the Nintendo Switch. If this app can work, it should be possible to make one as PC software too.
Luckily, there are a few easy ways to control Android from PC such as using AirDroid which allows you to touch the Android screen from PC. You can refer to How to remote control Android device from a computer with AirDroid?. It can both mirror the screen and give you the touchscreen control, which you can utilize it to control the JoyCon Droid app.
I've just found another way which is to use a microcontroller as a USB controller here.
I need some guidance. In a nutshell, I need to be able to configure and control a device with the smart phone app over BLE.
For example, change IP address of my Raspberry Pi. To make that happen, I need 2 things.
Simple Android/iOS app that takes IP address parameters as an input, and then communicates over Bluetooth to the RPi. Note that the device needs to be discovered and connected from within the app (without going to "Settings" and pairing).
Build some server process on the Raspberry Pi that listens to USB Bluetooth dongle, receives the command with parameters and acts accordingly.
So I need help building the BLE portion of this project.
I have several years of smartphone app development experience, and 10+ years of Linux system programming. In other words, building a simple Cordova app, as well as Linux process that changes IP address is really not an issue.
However, I am totally new to Bluetooth. Can you point me to the right direction? I am sure this problem has already been solved few thousand times. Is there a tutorial? Or maybe a skeleton code I use as a starting point? Also, any recommendation for BLE USB dongle?
Thanks a lot!
I think it will be harder to find a better guide to implement low energy technology on the RaspberryPi than this one :
https://learn.adafruit.com/downloads/pdf/pibeacon-ibeacon-with-a-raspberry-pi.pdf
After this , you can download a random app on the Playstore/Appstore and check that your RaspberryPi is actually acting as a BLE device.
Finally you can start creating your own app using several available BLE plugins like :
https://github.com/randdusing/BluetoothLE
https://github.com/don/cordova-plugin-ble-central
I am developing project on Raspberry Pi and I need to add feature of measuring heart rate. I want to use Smart Watch to do that but I do not know which smart watch provide environment which allows me to implement wireless communication between watch and Raspberry (Raspbian OS) easily. Thank you in advance for each answer.
I don't think any smart-watch allows direct connection between Raspberry Pi and smart-watch. It is not recommended on android developer site to open lower level sockets as well. You can send smart-watch's sensor data to Phone and then send it to Raspberry Pi.
I have built a home surveillance and alarm system with raspberry pi's.
What I need now is an easy and safe remote control to arm the system and disarm it.
The most workable solution is to have a wireless router in the middle.
Before stepping out in the door, take out my phone, connect to my home network and via a custom built web page arm my system. (Web page would run the arming scripts)
But for this I need to have a wireless router (currently I have a non wireless Ubiquiti Router Station Pro, no radio card on it) and need to enable wireless on my phone (it is not enable-d, battery reasons) before leave, connect and so on. It is not one click unfortunately...
Other solution is to have just a wireless dongle in the Raspberry PI and do an Ad Hoc WiFi connection with my phone. My phone is Sony Ericson Xperia. Over here my technical knowledge hits the limit. It is possible to broadcast an Ad Hoc network over Raspberry PI I do not know if I can reach it from my Sony Ericson Xperia phone.
Third option is Bluetooth. I know very little about Bluetooth. I do not know how safe it is, and how to program it, to have on and off switch on my phone. However this might be the most promising.
Fourth option is to use the Pi Face. Link one or two switches to some type of receiver device. Have a sender device on my key chain and control it from there.
However I do not know from where I can buy such a safe remote control and if it is compatible with Pi Face.
Fifth option. To get home alarm system components and link those with the Pi Face. But I do not know what component might fit.
The best user scenario is the following.
User takes out out a device (phone or remote control) and presses arm/disarm.
User has appropriate time (30 sec) to get out or shut down.
If the remote device had run out from battery still have something to shut it down.
So my question does any body knows a fast, easy, cheap solution how to do this?
Though Bluetooth's security is questionable, it seems like the best option for your goal. Next to an adhoc
Bluetooth is not complicated.
On your mobile phone, if you don't want to make your own app you can look for some sort of Bluetooth Terminal or Bluetooth Chat. On your raspberry pi you'll have to setup a bluetooth rfcomm server with bluez.
How to configure Linux to act as a Bluetooth RFCOMM SPP server?
RFCOMM without pairing using PyBluez on Debian?
Modify these servers which do nothing by default, to listen for commends "arm" and "disarm". Make sure the ID of the device is the ID of your phone.
Ad-Hoc is even less complicated (assuming you know how to make a webserver and are going to make it secure enough, and have a dongle which supports adhoc):
Here is a post about ad-hoc networking with a raspberry pi.
In terms of distance, you'll have to see the specifications on your dongle(s) but I would say they're relatively the same.. your bluetooth dongle will have a class see Bluetooth Basics: Range. This will require more research but if you have either one of the dongles I would use that method.
I hope this helps, good luck setting up your alarm.
In the mean time I realized that a fast arming could be done via the Pi Face and pressing a button.
Disarming could go by other ways.
However the fastest solution would be a fingerprint button linked safely to Pi Face.
Updates. Finally went with the Ad-Hoc method:
This is the tutorial for it:
http://elinux.org/RPI-Wireless-Hotspot