Questions tagged [iphone]

Questions about iPhone's hardware and interfacing circuits to iPhone

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1answer
93 views

How to initiate a Lightning connection

I'm trying to take the first step to establish a connection with an iPhone using the Lightning port. I'm using the Lightning A male connector body, which I believe should set the iPhone to be a USB ...
0
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1answer
71 views

How to run electricity through metal wire to (safely) act as a stylus?

I’m trying to make a robotic arm draw a lowercase ‘i’ on my iPhone’s drawing app without lifting the stylus. The robot arm bit is another story, my current focus is trying to make a stylus out of a ...
5
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3answers
2k views

80's Cassette Line to Microphone Level for iPhone

This is a followup question to this one: Using an iPhone as a cassette recorder for 80's home computer I'm trying to record from an 80's home computer (a Microbee) into an iPhone. Although I ...
0
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1answer
66 views

Reading data from an iPhone 5 [closed]

A close person got hit by a car and died a few years ago. The persons iPhone flew trough the air. The police was not able to turn it on and mentioned that it would be impossible to collect data from ...
0
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/...
5
votes
1answer
273 views

Mystery component in Selfie Stick? (iPhone)

What is the component inside an iPhone selfie stick? Testing reveals it is not a transistor. We have done some probing of it and come up with the following: The mystery 3-pinned component drops the ...
0
votes
2answers
80 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 ...
0
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2answers
2k views

How to extract data from an NAND chip with an NAND reader from iphone 6? [closed]

I am not an electrical engineer and I cannot take phones apart. I had an iphone 6 that suffered no water damage, no smashed screens, no dust... but suddenly it got an NAND memory issue. The phone ...
0
votes
2answers
61 views

How long would the capacitors in an iPhone power adaptor hold potential energy?

I was curious as to whether one could potentially get a shock after touching, with sweaty hands, the prongs of an IPhone power adapter upon unplugging it. If possible, how long would this charge take ...
-4
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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 ...
11
votes
3answers
24k views

Electronic aspects of iPhone 3.5mm audio output

I am working for a while now on a small project of building an external mic for the iPhone to be hooked in parallel to headphones (via the 3.5 mm jack). Basically, I want to replace the iPhone's ...
3
votes
1answer
10k views

Convert Iphone 3.5mm pin to standartd Samsung Android 3.5mm pin

This is a simple question. I want the new Iphone EarPod to work with Samsung/Nokia phones. I tried to use the headphone to Samsung phones. Here is the result Here is the Universal 4-pole Cell ...
2
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4answers
9k views

Improving throughput of a Bluetooth Low Energy Connection

Follow-Up question from Stackoverflow I am trying to write a characteristic value repeatedly over a short amount of time. Different sources tell that rates between 200 and 305 kbit / s should be ...
-2
votes
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 ...
2
votes
0answers
67 views

Does iphone shock transfer AC or DC current to body? [closed]

Suppose an iphone gave a little jolt when pressing the power button. Is that AC or DC current? The phone was connected to a laptop which was connected to a power outlet.
5
votes
2answers
17k views

Can a Bluetooth 4.0 BLE device talk to a Bluetooth 2.1 device at the most basic level?

I want to develop an app on an Apple iPhone, that has Bluetooth 4.0 BLE embedded, that talks to a basic piece of kit with a bluetooth 2.1 chip in it? Firstly - is it technically possible - if I only ...
0
votes
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:/...
0
votes
1answer
183 views

How to connect a spare mobile phone camera to a display and power? [closed]

I have an Apple iPhone front and rear cameras along with its A4 motherboard (yep, I disassembled it) is it possible that I can get a live feed from these camera(s) to a display and connected to a ...
0
votes
1answer
110 views

Can I add an audio jack to a digital audio board?

Can I use the preamplified audio signal on an iphone only microphone (Tascam iM2) to add an audio jack? There is already a USB 5V input which perhaps powers the preamp, and a volume control where I ...
0
votes
1answer
203 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 ...
2
votes
1answer
7k views

Microphone voltage on a 3,5mm PC microphone/headphone jack

I bought one of those cheap cup-anemometers that you can stick into the 3.5mm headphone jack of an iPhone or Android device. I'm assuming it is some sort of pulse generator and that the app uses an ...
-1
votes
2answers
400 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 ...
2
votes
2answers
735 views

problem solving: line level to iphone attenuator buzzing sound

I'm trying to use the mic input on my iPhone to record line level audio. I have made a cable with an attenuator as shown in the picture below. Recording from my macbook pro works like a charm (3,5mm ...
0
votes
1answer
143 views

Why are some electronics seemingly unbreakable (phones) and others very fragile? [closed]

Specifically I am wondering about the mechanical strength of the surface mount connections in consumer electronics. Are some tougher than others? I've had a few experiences where an electronic ...
0
votes
2answers
165 views

Anyone an expert on mobile LCD displays? [closed]

Reason I ask is, I've noticed with water damaged iPhone 6 screens if the pins on the connectors of the screen itself have corroded and you fix them with cleaning and fresh solder or jumper wires 8 out ...
0
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1answer
1k views

Does a rated 5V, 2.1/1A charger provide a constant current? [closed]

I use power banks often to charge my iPhone. The default charger is a 5V/1A charger (which I assume provides constant current). However, the power bank has 2 output ports - able to provide 5V=1A and ...
0
votes
2answers
98 views

why my laptop can't use wireless charging technology? [closed]

we start to deal with wireless charging technology in recent years with the booming of smart phones why wasn't it possible with laptops? does the smart phone's battery differ from laptop's?
-2
votes
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 ...
0
votes
2answers
90 views

Charging iphone without USB [closed]

I am looking to charge my iphone using a thermoelectric power generation device. The thermoelectric generator device has positive and negative leads, and I have tried connecting the wires from the USB ...
0
votes
1answer
315 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 ...
1
vote
1answer
1k views

Is it safe to use RFID in a phone case

I looked into this and found only vague indications that it should be no problem, but nothing specific enough to feel safe. Based on reading this question and its answers and comments it seems like ...
0
votes
1answer
2k views

Floating D+ and D- on a USB Charger

currently I have a problem with an USB Charging Plug (from china). There are some designs, where the D+ and D- line is shorted together, in other there are held to 2.7V. On my plug on the table, ...
-2
votes
1answer
102 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 ...
1
vote
1answer
1k views

USB data transfer with a separate power source

The car I recently bought has a built in USB but only provides 500mA. I want to use a cable like the one below to connect my iPhone to the built-in USB to play music/satnav on the car stereo, but I ...
13
votes
2answers
4k views

Why do only high-end phones support a lot of LTE bands?

Most lower and middle end phone only support 3/4 LTE bands. High end phones, like the iPhone, or flagships from Samsung and LG also support a lot of bands. iPhone 7: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, ...
0
votes
3answers
180 views

How to a build a payphone controlled iPhone? [closed]

I'm trying to create a project for my kitchen that involves using the shell of an old payphone and a modern cell phone ( perhaps iPhone ) to actually make calls. Basically, I would like the user to be ...
0
votes
1answer
140 views

Working on a high current USB charger

Title says it: I'm working on building a high current USB charger for my devices so that I can integrate USB ports into my headboard. However, I'm having a few glitches. When I plug in a device, the ...
0
votes
2answers
159 views

How to prevent iPhone 6 acting as faraday cage

I have experimented with attaching my work RFID access card to the back of my iPhone 6 which is made from aluminium. However it appears that the phone is acting as a faraday cage and preventing my ...
7
votes
3answers
6k views

Transfering data using ultrasound

Yamaha InfoSound and ShopKick application use technologies that allow to transfer data using ultrasound. That is playing an inaudible signal (>18kHz) that can be picked up by modern mobile phones (iOS,...
-3
votes
1answer
379 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 ...
1
vote
2answers
1k views

iPhone screen pin layout

I have an old iPhone of which I want to reuse the LCD display. The thing is, I don't want to use it as an actual display but rather make a fancy lamp out of it. The question I have is how I can figure ...
5
votes
4answers
11k views

How do I build a TRRS headphone jack with a jack that is detectable by an iPhone

I have a circuit and I am trying to integrate it with an iPhone via a TRRS headphone jack's microphone input. I have a generic TRRS cord and am trying to send a signal through it. However, the iPhone ...
0
votes
2answers
814 views

iPhone schematic help

Could someone help me understanding the markings of this schematic? What the little numbers I circled in red and yellow are. Is c59 providing power to that entire circled area or is just two points ...
42
votes
6answers
162k views

What is the voltage range of a standard headphone jack from a phone?

I want to connect the output from the audio jack of an iPhone to an Arduino. What voltage range can I expect to see on the audio lines from the iPhone? I assume that turning the volume up on the ...
1
vote
1answer
321 views

How does a Touch Screen Digitizer Tester work?

I'm currently replacing my screen for my Iphone and having issues with my touch screen dropping. The guy who sold it to me said he used this to test it. http://www.ebay.com/itm/LCD-Display-Touch-...
1
vote
2answers
2k views

How can extend the cable distance from a condenser microphone to the ADC without loosing fidelity?

I am new here so please forgive me for a vey basic question. I have a TASCAM iM2 in my possession. This is a stereo condenser microphone coupled to an ADC that connects to the the latest iPhone models ...
2
votes
1answer
128 views

Scrapping conponents from an iphone

I have an iphone 4 that no longer works. I know that selling it is always an option, but i'm curious if i can scrap spare parts from it instead (especially sensors). I've looked online, but haven't ...
2
votes
2answers
4k views

On an Apple 12W USB Charger, how are the D+ and D- lines configured?

Looking for the voltages on the V+ and V- lines of an Apple 12W charger that corresponds to the 2.4A output.
0
votes
2answers
6k views

Does it help to replace the battery if phone is slow? [closed]

Some people I know say that replacing the battery helped their smart phone improve its decreased speed resulting of two years of use. My initial guess is that this would not have any influence ...
-2
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: ...