Linux-based Operating System running a Dalvik Virtual Machine produced by Google, typically seen in portable devices such as cellphones, e-book readers, tablets, etc. Not to be confused with Androids in the robotics sense.
18
votes
3answers
13k views
What protocol does a headphone jack use?
I have 2 questions. One is simple, the other may be not.
1. What's the official name for the standard headphone jack? It's universal for all brands of phones, so it must have a name (when you want ...
14
votes
7answers
722 views
Is there any kit for android development?
Is there any kit or board on which I can test out customized android os?
9
votes
5answers
5k views
Arduino or PIC microcontroller?
I was thinking of creating a surveillance mobile robot. And I am having a problem of choosing a PIC or a Arduino microcontroller. The surveillance mobile robot is controlled via wireless fidelity ...
9
votes
2answers
2k views
How to make a fingerprint scanner (UART, Serial) for a headphone jack on Android?
Square up reads magnetic stripe cards through headphone jack on both Android and iOS. I want to capture fingerprints on an Android phone. Can I develop a hardware to capture fingerprints in the same ...
7
votes
1answer
1k views
Arduino ADK + Android LED blink example compiling errors
I'm trying to make a project using the Arduino ADK board and a Sony Ericsson Xperia Play running Android 2.3.4. For starters all I want to do is blink a LED from my Android device, using the nice ...
6
votes
4answers
3k views
Accessories for Android devices with USB host
The Android Accessory SDK relies on the accessory having USB host. However, my understanding is that newer versions of Android (3.1, 2.4?) have USB host support in the kernel. And I know many ...
6
votes
1answer
5k views
How do volume control headphones work?
A recent question over on Android Enthusiasts got me to wondering how volume control headphones work.
I don't mean volume control which works by attenuating the incoming signal, but the kind of ...
5
votes
5answers
643 views
MCU + Linux + Video?
How can I create an device running Linux (Android OS) with video output?
PS. I don't want to use an existing very sophisticated dev board, I want to create one.
Thanks!
5
votes
3answers
3k views
Control robot with Android phone
Basically we're building a simple setup with an Arduino board and some motors. The Arduino with motor shield will control several servo motors and DC motors, and possibly talk to a few sensors. This ...
5
votes
2answers
1k views
Arduino + Android : Communicate with a JY-MCU Module
I am trying to turn ON and OFF a LED with my Android Device through a Bluetooth module (JY-MCU V1.05), I can connect to the module with the key "1234", but when I send a command to the module through ...
5
votes
1answer
1k views
Communication between Microchip PIC24F & Android device
I am working on Microchip with Android Application via Android USB framework.
Currently, I have written a while loop to generate the random number continually.
It is possible to retrieve the random ...
4
votes
4answers
978 views
Touchscreen Performance (iPhone, iPad, Android, Nexus S, etc.)
Who makes the touch screens for the iPhone or Android devices? Specifically I'm wondering what the sampling rate is for dragging, etc. that gives these devices such smooth touch and drag performance.
...
4
votes
3answers
913 views
Proximity Sensor Nexus S
Can someone tell me how the proximity sensor on the Nexus S works or what it is?
4
votes
2answers
555 views
Is there any way to differentiate the sound of blowing air from normal sound through phone microphone?
I have been working on an Android app that takes input from microphone when user blows into it. I am using FFT based sound analysis and converting the values in frequency by using a zero crossing ...
4
votes
2answers
1k views
RN41 Bluetooth module with MSP430 to Android device
I have an RN-41 bluetooth module connected to an MSP430. I want to connect the RN-41 to an Android cellphone. Just by having power to the Bluetooth module, the cellphone finds the device. However, it ...
4
votes
1answer
240 views
Android Home Automation
I'm trying to do home automation using android app and arduino teleduino.
Basically, I'll be doing lights and power plugs.
I still cant post images so here' the link to the diagram I saw and will be ...
4
votes
1answer
764 views
Can the NFC antenna of smart phone read signals from (active) RFID tags/transmitters
Can the NFC antenna of mobile phone such as the Galaxy S4 or iPhone in addition to their NFC functionality, also be used to read signals from (active) RFID tags/transmitters e.g. from 20ft away not ...
4
votes
2answers
402 views
DIY NFC boosting antenna for a mobile device
I am very new to this. I'm a dentist trying to improve client flow in a busy office.
I would like to develop a cheap proof of concept for an NFC enabled client tracking system using a hacked mobile ...
4
votes
0answers
238 views
Arduino to Android serial communication issue
I've been trying to use this serial for android library now, but I can't make it work. I'm trying to run this little program in android:
...
3
votes
2answers
2k views
ATTiny85 and USB with Android?
I have developed an Android app which talks to an Arduino Mega through USB.
The C code is 1.8kb and will fit on an ATTiny85 chip in order to shrink the circuit to almost nothing. The problem is...
...
3
votes
3answers
418 views
Use USB as an on-off switch
I'm looking for a way to build a zero(ish) cost intervalometer for my Canon SLR using only stuff that I have or can get very cheaply (my budget is about $4). I've already managed to "build" a wired ...
3
votes
1answer
3k views
How can I send video from my Arduino camera module video to my Android screen?
I'm trying to connect a camera module to my Arduino Mega, connect my Mega to my Android phone (throught BlueTooth or other), and send the live view of the camera to the mobile phone.
I saw a video ...
3
votes
1answer
1k views
Teensy usb keyboard + Android
I've just gotten one of these Teensy boards: http://www.pjrc.com/store/teensy_pins.html
I am trying to set it up using the basic keyboards tutorial. It is working correctly on Windows PC devices when ...
3
votes
2answers
474 views
How to amplify a 3.5mm headphone analog signal?
I have made a circuit like described at this site
but the sound I receive through the mic sensor is not very high. Can I add some Opamp circuits to increase the analog data input in android phone?? ...
3
votes
1answer
1k views
Using Android Accesory mode to access a USB serial device, use a VNC2?
In a current project we use an Android application that talks to a USB Serial device (which speaks the Prolific USB serial protocol). This works fine with Android devices that support USB Host Mode, ...
3
votes
2answers
864 views
Microchip PIC24F & Android device: Which can be host device?
I work on a project where I want to connect PIC24F (Accessory Development Kit for Android www.microchip.com/android) and Samsung Galaxy S2 that I updated from android 2.3.3 to android version 2.3.4.
I ...
3
votes
2answers
328 views
Is there a good and reasonably priced way to make a custom RFID reader and barcode scanner that runs Android?
I'm building a system for a small manufacturing business that requires a mobile barcode scanner (at minimum) and would be great if it could be an RFID reader too. I would really like this to be a ...
3
votes
2answers
270 views
Counting number of bluetooth 4.0 (BLE) devices near me?
Does bluetooth allow you to discover devices around you that are simply on but aren't in any discovery state? I am not trying to pair with all these devices but merely count the number around me and ...
2
votes
3answers
7k views
Simplest Way to Connect an Arduino to Android (Wirelessly)?
I want to control a simple Light on an Arduino from my Android. The Arduino I have down pat, no problem. However without using Bluetooth on my Android, whats the simplest way to actually connect it ...
2
votes
1answer
735 views
What is the most common type of accelerometers in today's smartphones?
I know there are 6 different types of sensors for measuring acceleration:
Capacitive
Piezoelectric
Piezoresistive
Hall Effect
Magnetoresistive
Heat transfer-based
I have trouble finding a source ...
2
votes
2answers
2k views
Adding bluetooth to msp430
I was wondering, what is the best option to add bluetooth connectivity to a small msp430 project. I have tried to google this, and have found various resources, but I am not sure which ones to go ...
2
votes
1answer
106 views
How to do a DIY LCD output from a busted android tablet?
I have a cheap android tablet with a busted screen. Replacement screens cost more than a new tablet and I hate to waste it since it's only a few weeks old. I took it apart and it runs on a Allwinner ...
2
votes
2answers
99 views
Android to arduino- best board option for wireless [closed]
I'm a novice arduino hacker. I need to connect a hacked Android to an arduino wirelessly but unclear as to which option is best. I've read about the Mega ADK and it is my understanding that a regular ...
2
votes
2answers
1k views
Using the emulator with Android Open Accessory hardware
I have an Arduino + USB host shield. I would like to start developing with the Android Open Accessory Framework.
Can I connect my Arduino to the Android Emulator whilst developing? Or do I need to ...
2
votes
1answer
357 views
Bluetooth SPP (Serial Port Protocol) and Cobra Tag
I have been trying to build something similar to the Cobra Tag (Check out the video). I have written a prototype android app which uses SPP to connect to a bluetooth module and exchange commands, ...
2
votes
1answer
473 views
How does an oscilloscope buffer work?
I am making a simple 1MHz oscilloscope with an embebbed system based on ARM and Android. I have an ADC with a speed of 12MSa/s that takes the samples. I need it to send the samples to a PIC ...
2
votes
2answers
309 views
How can/does a mobile phone provide power to pen drive? [duplicate]
Mobile phones with USB OTG are not uncommon today. I am wondering that how can a battery operated device like mobile phone power a pen drive? From what I know, the power consumption of pen drive on 5V ...
2
votes
0answers
203 views
Android CAN bus connectivity via Bluetooth (or USB) [closed]
I'd like to read sensor data from existing CAN buses using a bluetooth (preferably, though USB would also work) device of some sort. Trouble is, I've never done CAN bus, bluetooth or android ...
1
vote
3answers
674 views
Controlling Electromagnet Via USB
I need to control an electromagnet via USB with an android phone, to make a small educational project.
I know how to write the software, but how can I control an electromagnet via USB?
Via an USB ...
1
vote
2answers
414 views
Smartphone touchscreen ribbon connector
Does anyone know what screen connectors or ribbon connectors for a smartphone like the galaxy nexus connecting to it's pcb and if simliar with other phones the screen connector that is, i'm finding it ...
1
vote
3answers
397 views
Oscilloscope time base
I am working on a personal project to make an remote oscilloscope using a PIC32 with wifi module for Android phones.
So far I have did a lot of things, like connecting the wifi module of the PIC32 to ...
1
vote
2answers
2k views
Tiny ARM Development Board? [closed]
I need a very small ARM based development board capable of running Linux (and Android, if possible, via SD card). The board should be not more than 25mm in terms of breadth. I found Raspberry Pi Model ...
1
vote
2answers
105 views
What is the audio voltage of an android phone?
For a project I am currently working on, I need to use the audio output of an android device. Is there a standard max voltage?
1
vote
2answers
78 views
can android phone power a peripheral via usb?
The 5V micro usb port on the android phone allows the phone to be charged from the mains and programmed. Is it possible that a usb connection to the phone can power a peripheral?
ie I want to power ...
1
vote
2answers
3k views
A Bluetooth device that will send data to a mobile phone
I want to make a device which will send a data to a mobile phone which is connected using Bluetooth.
Here is the thing: http://www.youtube.com/watch?v=g0qARDGJj1w.
I want something like this. The ...
1
vote
2answers
901 views
Hyperterminal, Bluetooth, Enhanced USART, PIC
I'm using PIC16F1824, Xtal 8Mhz and bluetooth module with baud rate 9600.
When I sent data using hyperterminal to the BT module, it works fine.
But when I send the same data using Android (Amarino), ...
1
vote
2answers
123 views
Controlling a motor from Android device for small dumbwaiter
In short, I am trying to build a motorized dumbwaiter (platform to carry small objects up and down vertically) from the ground to my office, which is about 15 feet higher than ground level. I would ...
1
vote
2answers
2k views
Connect Android device to arduino uno via usb
I have an Arduino Uno and need to connect to an Android device.
1) Do I need a USB host shield?
2) Would I be better off in buying a board that has USB host functionality built-in?
3) Is the ...
1
vote
1answer
217 views
Can I cut off the 5v output of the IOIO to the Android?
I'm working on a project using Sparkfun's IOIO for Android (https://www.sparkfun.com/products/10748) where power consumption is a concern. The IOIO board provides the phone with 500 mA charging if I'm ...
1
vote
1answer
1k views
Can Original Arduino Mega 2560 Work with Google ADK?
Stupid question fellow Stack users...
Can I use Google's ADK on the original Arduino Mega 2560? From what I can tell, the main difference between the Mega2560 and the Arduino ADK is the addition of ...
