Questions about iPhone's hardware and interfacing circuits to iPhone

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0
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1answer
73 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 ...
0
votes
1answer
127 views

Re-programming PIC microcontrollers with USB through smartphone

I want to be able to reprogram my microcontroller through my smartphone. My microcontroller will be sending data to the phone through USB with a built-in USB module. However, I will run into the ...
1
vote
1answer
69 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
0answers
64 views

Build or Buy Bluetooth 4.0 BLE Tag [closed]

I am planning to create a mobile application that scans a NFC tag and performs an action based on the unique scan (tap). Because Apple iPhone do not support NFC I am forced to look for an alternate ...
0
votes
2answers
112 views

How does iPhone detect when dock connector is connected to an audio input?

I'm trying to solve a seemingly simple problem with (hopefully) an equally simple solution. I'm strictly an amateur when it comes to electronics, so I'm hoping someone here can guide me in the right ...
1
vote
1answer
308 views

Transmit and receive 433,92MHz signal from the smartphone [closed]

I would like to use my smartphone to send and receive signals from the devices that is working on the 433,92MHz. I assume that it's not possible to communicate directly with this device from the ...
3
votes
0answers
222 views

passive high pass filter to iphone mic jack

I'm attempting to input a heart rate signal into my iPhone via the microphone jack. I need to pass the signal through a passive high-pass filter to remove the DC offset before inputting it in to the ...
-2
votes
2answers
81 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 ...
0
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0answers
104 views

iPhone TRRS Circuit Not Working

So basically what I am doing is creating an FSK module that sends data to the iPhone via a 4 pin headphone connector (TRRS). So the FSK audio signal comes from the module, and into the mic pin of the ...
3
votes
2answers
252 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 ...
3
votes
2answers
257 views

Is there a means of USB interfacing to an iphone, which does not require an expensive Apple approval process?

I am developing an external hardware that needs to make USB interface to iPhone. (30pins for now). I do not think Apple would approve MFi for an individual. For USB interface, is there no way? Or ...
1
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0answers
91 views

When a smartphone is connected to a charger (USB), does it use battery or charger as it's main power supply? [closed]

When a smartphone (fully charged) is connected via USB to PC (or to charger) does it uses charger or it's own battery as main power supply? Battery is supplying about 3.8-4.1 V and USB ~5V.
-1
votes
1answer
183 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 ...
2
votes
1answer
107 views

Add iPod 4 dock to old Hi-Fi (Will my idea work?)

I'm currently attempting to add an iPhone Dock to my old Aiwa Hi-Fi system. I've used a multimeter and established that the VCC for the Hi-Fi's internal circuitry is ...
1
vote
3answers
166 views

Iphone wireless communication without Wifi? [closed]

I am working on a robot that I would like to control using an Iphone app that I am creating. The problem I'm facing is that the robot will be operating in areas where there will most likely be no ...
1
vote
1answer
663 views

Pinout of iPhone 4/4S rear camera connector?

Has anyone come across the pinout of an iPhone 4/4S rear camera module connector?
1
vote
2answers
784 views

iPhone Headphone Jack - Accessory & Headphone Use

I'm working on an iPhone accessory that consists of a temperature sensor and LED. I want to power the accessory through the iPhone headphone jack, but I'm concerned that the user can't use headphones ...
0
votes
0answers
71 views

What is the right mating connector for an iPhone 5 rear camera module?

I wonder what is the right connector type to mate with this iPhone 5 rear camera module? I know its a 32 pin connector, but not sure about its type. Can any of these Molex connectors mate with it? ...
0
votes
1answer
144 views

How much energy can the iphone output into an external device?

I am having a lot of trouble finding any concrete information online about how much voltage/amperes the iphone 30pin as well as the new 8pin connector is capable of outputing to an external device. ...
4
votes
1answer
710 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 ...
2
votes
1answer
626 views

Circuits for two way data transfer from iPhone to Arduino via headphone jack

What I'm trying to do: I recently bought an iPhone 3GS (yes iPhone...) and I am going to install Android on it so I can make apps myself for it and incorporate it in a bigger project, using the WiFi ...
1
vote
2answers
1k views

data signal on headphone jack input on iPhone [closed]

I am building an external device for the iPhone that will produce an analog signal that I want to send through the headphone jack. From all my reading, all data sent through the jack is in analog ...
-2
votes
2answers
544 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 ...
7
votes
3answers
729 views

Is a human (or other) electrical signal absolutely necessary to activate a capacitive touchscreen?

I know this is the general wisdom, and that someone has asked a similar question here: How can a capacitive touch screen be triggered without human contact? However, I didn't quite understand the ...
-1
votes
2answers
111 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 ...
1
vote
0answers
2k 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 ...
-3
votes
1answer
148 views

how to connect iphone femal plug to a smartphone plug or jack [closed]

I want to use the docking station made for the iphone for my htc phone. I bought a female iphone plug and tried connecting the wires but i have no idea which wire is which. The htc wires have only ...
1
vote
1answer
235 views

Can I convert audio signals from an iphone to electrical signals to control another device?

I wish to design a mobile app that will allow me to touch parts of the screen, generate a music tone that will be converted to an electrical signal to move part of a toy. By touching different parts ...
3
votes
0answers
785 views

Arduino - Trigger an iPhone's touch screen with no human interaction

I'm trying to replicate part of this experiment. Specifically, I want to touch the screen with a cable and some aluminum foil whenever I send a signal from an Arduino pin. From the blog post linked ...
-2
votes
1answer
853 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 ...
0
votes
1answer
551 views

Charging iPhone via AAA battery [closed]

I have a trip in near future, I have a hub dynamo fit to my bicycle which has 6.0 V DC output of 3 Watts power. I have read few posts and realized that it is risky to charge my iPhone directly through ...
3
votes
2answers
832 views

Sending data through the iphone headphone jack

I recently bought a TRRS Pigtail on sparkfun and I want to have two buttons attached to one end of the cord and another end connected to the iphone in the headphone jack. I would like to be able to ...
2
votes
1answer
1k views

Can you damage an iPhone by charging it using a (homemade) solar panel?

I found a guide online that shows how to make a solar phone charger (in a bottle), and I thought I'd try it out, but I'm worried about damaging my iPhone 4 (for a school project). (If anyone's ...
4
votes
2answers
4k 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 ...
2
votes
2answers
472 views

How do I get a relay to recognize when a TRRS jack is plugged into my iphone?

I'm working on a project where I would like to put an aux input in my car. I was thinking of hooking up my CD changer output wires to a relay and then hook up the aux wires to the other part of the ...
0
votes
1answer
538 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 ...
-3
votes
1answer
123 views

Use iphone as a bluetooth broadcaster [closed]

Is there anyway to use the iphone 4 3.5mm jack as an AUDIO IN then broadcast all this audio signal to a bluetooth headset? What do i need to start? Thanks
8
votes
1answer
530 views

Mimic human capacitance

In a video at Kickstarter a project called Tapcaps is mimicing human capacitance for triggering touches to a capacitive touch screen (the iPhone). At 0:45 in the video we can see a glimpse of the ...
2
votes
3answers
2k views

Sending data from RN-171 in adhoc mode

First, I'd like to note that I'm a software engineer by profession and haven't had anything but trivial experience in interfacing with hardware. With that said, I'm looking at getting a prototype ...
4
votes
2answers
3k 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 ...
0
votes
1answer
161 views

Potential problems with paralleling a jumbo battery to iphone internal battery?

Recently I happen to replace a new iPhone 4 replacement battery, with a little bit of peel down of the battery, I saw there is a bare lithium battery unit with a PCB battery protection board. My ...
1
vote
2answers
475 views

How can I convert the current from a fan to the microphone headset input on an iphone?

I am working on creating an anemometer (or wind meter) for the iPhone. I am a programmer and know exactly how I could do this on the software side of things, but I am a complete noob when it comes to ...
5
votes
3answers
873 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 ...
-1
votes
1answer
1k 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 ...
7
votes
1answer
869 views

Why isn't iPhone minicom reading serial data from Arduino?

Alright, this is my first time posting on electronics.stackexchange.com but I have frequented stackoverflow.com for some time now. Basically I am trying to output serial data from the Arduino to an ...
4
votes
1answer
282 views

Using an iPhone as a cassette recorder for 80's home computer

I've got an old 80's home computer (a Microbee) that I've just got running again. It uses cassette to save/load programs and I thought I'd see if I could use my iPhone instead of an actual cassette ...
1
vote
1answer
747 views

Does the TI CC2540 support Bluetooth High Speed protocol?

The Bluetooth High Speed (HS) protocol is included in the Bluetooth 4.0 spec, but I can't find whether or not standard Bluetooth 4.0 modules such as the TI CC2540 support the high speed part of the ...
4
votes
3answers
2k views

IR to audio converter (frequency and level)?

What kind of IR detector and converter circuit could be used to down-convert an IR remote signal (in the neighborhood of 35 to 45 kHz) into audio frequency signals (0.1-20 kHz) of the appropriate ...
0
votes
2answers
156 views

System on chip questions

I was reading about System on Chip on wikipedia and I was wondering Is the iPhone an example of this? Is the system saved on a processor? How is the system actually put on the device? Thanks!
2
votes
3answers
4k 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 ...