Questions tagged [iphone]

Questions about iPhone's hardware and interfacing circuits to iPhone

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1answer
268 views

USB data cable that doubles up as a USB storage device

Is it possible to create an USB to micro USB (or lightning) cable that has storage built into it? So if it's plugged into a computer with no phone, the computer recognizes it as a regular USB ...
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1answer
3k views

Turn on/off led via headphone jack in iPhone

I have an iPhone project , I need to turn on and off a led powered with a battery using iPhone via 3.5 mm jack. there is some examples what I need https://www.youtube.com/watch?v=w0VopnVZQ-w http:/...
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1answer
75 views

Emulating the start/stop button on the remote control of the iPhone

I need to build an (apparently) extremely simple device which is basically a pushbutton that pauses and restarts the playback on an iPhone. This is exactly what the central button does, on the remote ...
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1answer
126 views

What components do I need to connect a phone to my device via Bluetooth?

I have a phone I want to connect to a docking station I am making, via Bluetooth for as cheap as possible. As I understand the situation, all I need is something that can pick up a bluetooth signal ...
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1answer
719 views

Amplifying analogue audio from an iPhone docking station

So I have an old iPhone speaker dock that broke after I plugged in the wrong cable and fried the microchips on the circuit board. From it however I salvaged the dock connector itself and a couple ...
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1answer
1k views

Lightning Connector Power Output rating/ Apple Policy

I am currently in the process of developing an external antenna for smartphones, so the answer of the following question(s) pertains to the feasibility of this product. What is the line level output ...
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1answer
971 views

TS jack to XLR?

I made my own cable to connect iPhone 4S to mixer. An iPhone TRRS jack has 4 poles (tip, ring, ring, sleeve) for (left, right, ground, mic ) respectively. I used a TS plug instead, connecting pin 2 in ...
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1answer
773 views

Arduino and iPhone via WiFi

First of all, I can control Arduino from iPhone by using Processing and TouchOSC app. But my task is to achieve a control wirelessly "without using a PC" in between. I need to control Arduino ...
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votes
1answer
52 views

Delayed button press

I am working on a headphone circuit that plugs into an iPhone , between the mic wire and the GND wire there is the mic , and a push button , with iPhones when you press the button once it will pause/...
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2answers
82 views

How does USB port on a power strip detect the optimal current output?

I am looking to buy a power strip with USB ports and came across this one online. The description says "Top-notch USB smart charging technology which can detect and deliver optimal current output up ...
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1answer
339 views

Why does four Apple Model Numbers (A1457, A1518, A1528 & A1530) have two FCC IDs (BCG‑E2643A & BCG‑E2643B) [closed]

These are model Numbers of iPhone 5S. I want to know why two Model numbers of iPhones have the same FCC ID? I am assuming that as they are two models, they are NOT the same for Apple yet they have the ...
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1answer
3k views

Can a headphone jack power an LED? [duplicate]

Possible Duplicate: Power LED from headphone jack New to electronics (I am a software guy) so pardon me if it's a very noob question. Can an iPhone headphone jack power a small LED? The LED ...
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votes
1answer
205 views

How do I wire a Shure WL 185 to to iPhone or iPad?

I have this old but very nice mic. Old days I recorded audio to the camera or recorder. Nowadays I record to iPhone so I do not have extra recording device and cameras are action cameras usually ...
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votes
2answers
174 views

iPhone control LED light without wifi

I am fresh to the electrical engineering, and actually I am a web developer, ruby and php, etc. I am wondering that is there a simple way to control one or more LED lights using iPhone without wifi ...
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2answers
416 views

Charging a phone using Potential Energy

How can i convert the potential energy of a mass into mAh for this reason: How heavy would a mass have to be if I wanted to charge my Iphone (2800mAh) using a apple phone charger (5V 1000mAh). The ...
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1answer
5k views

HM10 Bluetooth (CC2541) put in to sleep while connected to iOS application

I'm trying to trigger an action on iOS application using HM10 Bluetooth module. And i have successfully accomplished the functionality, But now my concern is the power consumption, I have already ...
-1
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1answer
648 views

Typical Power circuit for smartphones? Correct energy measurement? (Nexus 4, iPhone.. etc)

I am trying to perform some energy measurements using smartphone. And to make sure that I am performing my calculations correctly, I been trying to find any examples of typical power circuit in today'...
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votes
2answers
148 views

Getting the direction that user is facing

I've just started playing with electronics and I'm wondering. As you guys probably know, using the iPhone you can get the direction that the user is facing. My question is, what electronic ...
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votes
3answers
3k views

How much mA to charge an iPhone

I'm building an iPhone solar charger and I'm not very good with electronics but I want to know how long it would take to charge an iPhone 6 fully. The panel I'm using has: ...
-2
votes
1answer
2k views

Home automation appliances wired to micro controller with wireless control from ipad/iphone [closed]

I'm currently going to start developing a media controller for my room. This microcontroller would be controlled wirelessly from my ipad. so there's three parts to this, my ipad, simple ...
-2
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2answers
2k views

How to make the lightning port of iphone output 5V power? like OTG on android phones [closed]

How to make the lightning port of iPhone output 5V power? How to make the lightning port of iPhone output 5V power? Just like the android phone, if I connect the ID pin to the ground then the phone ...
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1answer
1k views

Iphone 7 plus mic frequency range [closed]

I recorded a video from some birds around my car while the car was off and its alarm system was on. After watching the video I noticed that there is an oscillating noise recorded by the phone near ...
-2
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1answer
315 views

How to read the headphone jack in android or iphone [closed]

I have two switches that I would like to connect to an android phone (and/or an iphone). To be clear, I would like to connect a morse code key that has three connections: a ground, a dit and a dah. ...
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2answers
2k views

How to use iPhone to evaluate an IMU chip?

I have a quadcopter like the below (source of the image) and I have an IMU (inertial measurement unit) having acc sensors in X-Y-Z and gyro sensors in X-Y-Z. Now I am trying to find an iPhone app ...
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votes
1answer
109 views

Using or switching between two USB power sources, one being data USB [duplicate]

This is what I need: What's the best way to achieve this without damaging my car's audio? I want to connect my iPhone to my car's audio and charge it at up to 4.2A iPhone will draw up to 2A instead ...
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votes
1answer
226 views

Is it bad to charge an iPhone 5S with an iPad Air's charger? [closed]

Often in the little leaflets that come with chargeable electronic gadgets, manufacturers state that you should only use the original supplied charger to charge the gadget. We all know that an iPhone ...
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1answer
387 views

Am I understanding this circuit right?

This is from an iPhone 6. I'm having a hard time understanding how q1701 controls the "handshake" to Tristar_pin to allow charging. (Diagram says "pin for handshake" next to C1704 at top right.) I ...
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1answer
81 views

Would it be energy efficient for phones to include actual GPS chip? [closed]

None of the smartphones today have dedicated GPS chips in them, they only have a GPS capability that stems from byproduct features of the modem chips. Because of that, the GPS capability is very ...
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2answers
1k views

IPhone charging with Supercapacitor [closed]

Can a 3000 Farad Supercap at 5V charge an iPhone? If yes how much will it charge it percent will it charge it to? Thank you