Questions tagged [reverse-engineering]

The process of taking a completed system and determining details of its design; may have legal limitations or ramifications in different jurisdictions

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21
votes
4answers
12k views

Is it possible to reverse engineer a chip design?

Can we make something like chip reader, which can understand chip design and generate blueprint of it?
32
votes
2answers
11k views

How can I reverse engineer a simple through-hole board?

How can I reverse engineer a simple through-hole board? Trying to do it by eye gets confusing because it's easy to lose track of component orientation and location while flipping the board over. Maybe ...
5
votes
2answers
341 views

What kind of serial communication is this?

I am trying to reverse engineer a serial communication between to microcontrollers (1 device & 1 microcontroller on a board). One MCU validates the other MCU and I want to crack the validation and ...
7
votes
2answers
19k views

Reverse engineer: How do I remove the black plastic that hides the ics?

I am hacking a circuit and it has this black plastic thing (see picture below) that hides part of the circuit. How can I remove them to see what is inside? What they are for? I think they are for ...
9
votes
3answers
11k 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 code? ...
7
votes
1answer
3k views

Extracting firmware using JTAG

I've searched around and found quite a few examples of articles claiming to have extracted firmware from some device using the JTAG interface. I have read further that there is no general procedure ...
11
votes
5answers
10k views

Remove an LED from a circuit

I have bought a webcam from which I would like to remove an LED (burning it is also fine for me). By doing so, I could obviously change the way the circuit works, so my questions are: Should I ...
4
votes
2answers
1k views

Capacitive moisture sensor not quite working

I have spent the past few days trying to reverse engineer a capacitive moisture sensor I ordered from eBay a while ago. The particular one I received looks like this: What fascinated me about this ...
3
votes
1answer
800 views

Reverse-engineering asynchronous serial protocol for EcoSmart Tankless Water Heater

I am trying to reverse-engineer the remote control protocol for my EcoSmart Tankless Water Heater. Unfortunately, the remote control device is no longer available for purchase, and the manufacturer ...
3
votes
1answer
5k views

How do Dualshock 4 pressure sensitive buttons work?

I'm doing a reverse engineering research about the PlayStation 4 controller. I want to know how do the analog buttons work (the triggers in the bottom, not the analog sticks). I've found a nice ...
5
votes
4answers
3k views

Do PCBs have schematics? [closed]

I have been studying electronics a bit at home in my spair time. I was wondering if manufacturers make schematics for PCBs? If I could get ahold of something like that i feel that I could understand ...
1
vote
1answer
462 views

Nano Electric Receiver Switch - Circuit Components

I want to recreate the circuit board below, but I am having a hard time figuring out what components I need. I have been trying to look them up on mouser but I haven't got any results. It is called ...
15
votes
1answer
860 views

Studying the PCB of a 70s calculator. What were they thinking?

I've been studying the PCB from an ELSI 8002 calculator from 1974. I'm thinking of repurposing the case for a project, though now that I've fixed it (by re soldering the battery connectors) I don't ...
2
votes
0answers
139 views

Trying to figure out what kind of input signal this loudspeaker amp circuit needs

I'm still trying to figure out how this door intercom module works. It's a 18y old siedle TLM 611-0 module, I figured out the mic part, there the audio signal is modulated onto the current the mic amp ...
1
vote
2answers
286 views

Best materials to prevent reverse engineering of PCBA components? [duplicate]

I have an overmolded PCBA on a cable with passive components only. Some of the components are hard to identify, but I'm still concerned about the possibility of competitors trying to reverse engineer ...
1
vote
3answers
346 views

Reverse engineering: Relay driver design consideration

While reverse engineering a garden twilight switch I frowned upon the fact that there is no positive feedback for the OPAMP. Rather than that I found a simple top detector D7/C5/R5 to drive the output ...
0
votes
4answers
4k views

Reversing the Direction of An Induction Motor?

I have this motor I salvaged from a dryer, and I'm interested in reversing the direction of spin because it spins in the direction opposite of typical machine threads. The Capacitor is shown at the ...
-1
votes
1answer
285 views

How does this circuit work? DC supply from 230VAC without transformer - Radiator control board

An electrical house radiator stop heating, so I opened it and start trying to understand how the control board is working. I was very surprised to discover a very very low cost board with a power ...