The reverse-engineering tag has no wiki summary.
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81 views
Coupling a current generator to a very high impedance [closed]
I hacked my car radio, cause I've lost code. So I decided to enjoy the TDA7560 as a final stage. Actually I made an hack you can see here
It works well, but I have a few doubts. I have an input ...
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0answers
34 views
Easiest way to make printing head spray ink? Print head problem [closed]
Leveraging the topic adaptation of printers ...
I am planning to use a epson c63 (This guy has greatly facilitated the work: ...
5
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2answers
127 views
Is there any possibility of dissecting a microchip to get data from its internal memory?
There are many devices that perform various cryptographic operations inside their microchips. One of their key feature is that the secret keys are stored inside of the hardware and never leave it. ...
3
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2answers
243 views
Reverse engineering a 12 pin LCD?
I just found a broken "laser projecting alarm clock". I took it apart, and am interested in only the laser projection arm. This consists of a laser diode (although I suspect that this is actually just ...
2
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1answer
285 views
Reverse-engineering RF packets
I have a Blue Line Innovations PowerCost Monitor. It sends packets to a display unit over a 433.92 MHz RF link. There is code (Power Monitor, incomplete) to detect these packets with a RF Link 4800bps ...
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41 views
Voltage to replace a handset's microphone required [duplicate]
Possible Duplicate:
Connecting a telephone to the computer’s soundcard to playback music samples while talking
This is my setup.
I need to know U1(Voltage) to emulate normal speaking ...
1
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0answers
47 views
Wiring pinout Testing and locations with diagrams
I have a project where I need to reuse some old equipment and would like to figure out the pinout's does any one have suggestions of sites that would have any pinout's of older servers. About the only ...
3
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2answers
150 views
What is this resistor strip on my helicopter circuit?
RM: Smaller photo substituted - larger slower loading one here if desired:
http://i.stack.imgur.com/RPM8l.jpg
I am building a helicopter and would like to use a linear servo like the one on the ...
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1answer
163 views
Where to hire a reverse electrical engineer? [closed]
There's a small electronic device I want to replicate but some components are unmarked. On which website could I find a person to do a reverse engineering job on it ?
I know a bunch of freelance sites ...
8
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4answers
461 views
Legality of Reverse Engineering
If there was a "law/legal" stack exchange site I'd post it there, but it's in its infant stages in Area 51. I'm a musician and an electrical engineering student. I've designed a modification to the ...
2
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3answers
491 views
How hard is it to reverse-engineer a two-way protocol for a beginner with a logic analyzer?
I recently bought a Tacx Flow trainer, which has a handlebar computer, with a 6channel RJ-11 cable between the trainer and the handlebar computer. The computer reads pedal frequency, power and speed, ...
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2answers
623 views
What are some resources for reverse engineering digital electronics? [closed]
I have some Wowwee robots that I'm taking apart in order to dissect them -- a project(s) meant to give me a foundation and focus to learn electronics (especially embedded/digital electronics).
My ...
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2answers
416 views
Sniffing data from C8051F007
For fun I have taken it upon myself to try to reverse engineer a consumer blood pressure device. The device uses a C8051F007 32 pin MCU. I am trying to figure out how I can eavesdrop on the ...
7
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5answers
477 views
Reverse engineer a chip or go with a new one and start from scratch?
I'm working on an existing toy product and the chip has been discontinued. We still want to produce more of this product. You press a combination of buttons and it talks to you.
What would be a more ...
0
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4answers
395 views
How to profile the communication protocol of my Microsoft Arc wireless keyboard?
I bought a new keyboard for windows, datasheet, and I would like to sniff the packets between the keyboard and the pc / USB transmitter.
The datasheet is useless and there is nothing informative for ...
1
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2answers
252 views
Determining Suitable Replacement Transistor?
I have a toy which developed a short, and one of the transistors on the board is now fried.
I've removed the shot transistor, along with the part of the toy which was shorting out, and everything ...
0
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2answers
126 views
checking solar panels current
I have some solar panels, that I don't have any information about it. How can i measure how much current it is able to deliver? With my multimeter under the sunlight? Can I test it with a light bulb ...
5
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2answers
94 views
Determine Attributes of an LED
I have some devices which have purple LED's in them. I need to make another one, but don't know anything else about the LED to buy more.
How can I determine the forward voltage and maximum current ...
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3answers
1k views
Is there possible to reverse engineer a chip design?
Can we make something like chip reader, which can understand chip design and generate blueprint of it?
1
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1answer
180 views
How to reverse cellphone firmware
I want to get full list of supported AT commands and other undocumented codes for some cell phone. I found that using strings command (on linux or win alternative) ...
3
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4answers
2k views
DSC Keybus Protocol
I'm plan to interface a atmel avr with my alarm system in home but the issue is DSC has a propriatary protocol between the keypad and the base. So has anyone messed with this before or can give me a ...
5
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4answers
298 views
Patented hardware architectures
I have seen patented hardware designs at the level of generic digital block such as shift registers, flip-flops and adders. If a chip maker were to include such a design deep within an ASIC, how can ...
3
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6answers
595 views
Monitoring two serial lines at the same time
First this is the setup:
(please note that one of the grounds is not connected, both FTDIs working properly)
Now, I have used PuTTY to look at these two serial streams, both exchanging data at 9600 ...
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5answers
352 views
Identifying the SPI master
I'm trying to reverse engineer the SPI communications between two chips. But, it's not clear who's master and who's slave.
I've found the chip select. Without lifting any pins or cutting traces is ...
5
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6answers
2k views
Reverse engineering USB signals
Let's say there is a USB stick that is specifically for storing dates or days or some kind of arbitrary data. In order to access the data you must have the software.
Is there any way to analyze the ...
4
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2answers
889 views
Pinout of a 3 wire magnetic card reader
I got given a piece of electronics to take apart that has a magnetic swipe card reader built into it.
Upon taking it apart the card reader itself (which appears very much like a tape deck head) seems ...
5
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3answers
2k views
Securing code on an AVR/Arduino and delivering updates
What is the best way to protect code flashed onto any AVR based device from reverse engineering?
What is an easy way to provide updates to end users to flash on their own without disclosing the ...
5
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3answers
1k views
is there any way to determine the correct voltage for a stepper motor
I recently bought a CNC mini-mill at an auction. It is fitted with steppers on the three axis. The X and Y are the same, and the Z is a bit smaller (physically). All the markings were removed from the ...
