Questions tagged [iphone]
Questions about iPhone's hardware and interfacing circuits to iPhone
139
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Further Electronic aspects of iPhone audio recording via lightning connector
Following on from this post I wired up a way to record audio on an iphone (the important design points quoted here):
The iPhone as well as other mobiles will apply a DC voltage about 1.5-2.5V to the ...
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4
votes
2
answers
301
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Small particles from broken iPhone charging cable
While trying to fix an iPhone charging cable, I noticed I had some small particles on my fingers, that looked like metal. I wonder if any of the materials I touched and manipulated could have released ...
- 41
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0
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26
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GPS UART NMEA output to iPhone
Working on a tracker project. Idea is this:
L80-M39 GPS (UART) -> RF Transceiver <--- distance ---> RF Transceiver (UART) -> ?
On the right-hand side, I am getting location information via ...
- 147
0
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0
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218
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ESP32 BLE Bluetooth Serial to Hardware Serial Bridge
I'm looking for a way to use serial devices with my iOS iPhone without buying a $20 device.
I have an ESP32 which can do Bluetooth Serial to Serial using this code but if I replace the Serial with <...
- 138
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44
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Wireless charging wire system (portable charger)
I am an industrial designer that is looking into creating a portable charger that uses MagSafe charging for the new iPhones, but I want the portable chargers to be able to stack. Through the stacking ...
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0
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189
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How to create current limiter to limit phone charging current to 500mA?
I have this neat iPhone case from AudioMod (https://www.audiomod.com/audiomod) that has a built-in headphone jack.
I'm looking to upgrade from my 6S to the latest iPhone SE, which is the iPhone 8 ...
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1
answer
283
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How to get 5 volts from Lightning pinout? [closed]
How to make the Lightning port of iPhone output 5V power?
1
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1
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71
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Solar powered iPhone for remote monitoring
I want to find a way to use a solar panel to power an old iPhone running a single app to continuously collect temperature and humidity data in remotely located beehives. The iPhone must be ...
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39
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Automatic Headphone Control Issues
A friend wants an automatic headphone controller for his bike. According to the Android spec we should be able to add a bias resistor of 5kohm between mic and ground, short mic to ground for play/...
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159
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iphone 6 plus - Is the resistor R0601 important?
What is the resistor R0601 important for?
Can a iphone 6 plus work without it ?
What is the meaning of the code (ZQ) in the iphone schematic?
Thanks
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159
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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 ...
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76
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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 ...
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120
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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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1
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817
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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 ...
- 51
0
votes
2
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157
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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 ...
- 105
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2
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104
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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 ...
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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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2
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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 ...
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2
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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 ...
- 157
2
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0
answers
87
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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.
- 121
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460
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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 ...
- 21
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157
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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 ...
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2
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1k
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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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2
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2
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3k
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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 ...
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1
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3k
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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 ...
- 117
0
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2
answers
333
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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?
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1
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157
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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 ...
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1
answer
2k
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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 ...
- 1
0
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2
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147
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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 ...
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1
answer
678
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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 ...
- 27
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2
answers
197
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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 ...
- 191
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2
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3k
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Is it safe to use RFID in a phone case [closed]
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 it ...
- 35
2
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1
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4k
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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, ...
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1
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295
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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 ...
- 9
1
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1
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3k
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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 ...
- 9
14
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2
answers
8k
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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, ...
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3
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319
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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 ...
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1
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1
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154
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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 ...
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2
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187
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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 ...
- 109
2
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2
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413
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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 ...
- 121
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1
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15k
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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 ...
- 133
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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 ...
- 625
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2
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3k
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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 ...
- 23
0
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2
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1k
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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 ...
- 625
1
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1
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481
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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-...
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3
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2
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8k
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On an Apple 12W USB Charger, how are the D+ and D- lines configured?
I'm looking for the voltages on the D+ and D- lines of an Apple 12W charger that corresponds to the 2.4 A output.
- 153
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1
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168
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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 ...
- 215
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2
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10k
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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 ...
- 111
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3
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5k
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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:
...
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0
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1
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377
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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 ...
- 1