Monday, November 20th, 2017
Kerry Wong writes: As mentioned in my previous post, besides the broken LCD there was also an issue with the power supply portion of the unit and the output voltage was clamped at around 10 to 11V. The digital circuitry portion however seemed to be intact. Unfortunately since an identical...Tags: BK Precision, LCD, reverse engineer
Posted in reversed | 1 Comment »
Friday, August 25th, 2017
Ken Shirriff writes, "A die photo of a vintage 64-bit TTL RAM chip came up on Twitter recently, but the more I examined the photo the more puzzled I became. The chip didn't look at all like a RAM chip or even a TTL chip, and in fact appeared partially...Tags: DTMF, reverse engineer
Posted in Chips, reversed | No Comments »
Monday, December 26th, 2016
Robert Gawron writes: Not many people know, but in some smoke detectors, radioactive materials play an essential role. Today I will present one of those devices, and my -successful- attempt to reverse engineer it and get the circuit diagram. Those smoke detectors uses a small amount of Americium-241 (chemical symbol:...Tags: reverse engineer, smoke detector
Posted in hacks | 1 Comment »
Tuesday, April 12th, 2016
Ken Shirriff wrote an article on reverse engineering a 555 timer chip, He writes: This article explains how the LMC555 timer chip works, from the tiny transistors and resistors on the silicon chip, to the functional units such as comparators and current mirrors that make it work. The popular 555 timer integrated...Tags: 555 timer chip, CMOS, reverse engineer
Posted in reversed | No Comments »
Saturday, January 16th, 2016
In a previous post, Ken Shirriff reverse engineered the silicon in the ARM1 processor, this time he reverse-engineer the priority encoder in the ARM1 processor: In this article, I reverse-engineer the priority encoder in the ARM1 processor. By examining the chip layout provided by the Visual ARM1 project, I have...Tags: ARM1 chip, reverse engineer
Posted in reversed | No Comments »
Friday, April 3rd, 2015
Kristian Lauszus writes, "In this blog post I will describe a IoT (Internet of Things) Vending Machine that I built quite some time ago with a friend of mine Sigurd Jervelund Hansen. At Sigurd’s dorm room they got hold of an old vending machine free of charge, as it did not...Tags: Arduino Pro Mini, IoT, reverse engineer
Posted in Arduino, R-Pi | 1 Comment »
Thursday, March 19th, 2015
Florin of YourITronics writes, "In this video I am assembling a 0-30V 0-3A Adjustable Linear Power Supply kit. Will it work at first power on? Or will Murphy get me this time? Watch the video and see how I got myself into trouble. I also reverse engineered and got a schematic...Tags: power supply, reverse engineer
Posted in DIY | No Comments »
Monday, April 21st, 2014
Ray Wang writes: I just wrote a series of three posts about how I reverse engineered a few off-the-shelf wireless temperature, humidity sensors and rain gauge, and used an Arduino to listen to and decode the sensor data. The tools involved are quite simple: an Arduino and a 433MHz RF...Tags: reverse engineer, sensor, wireless
Posted in Arduino, wireless | 1 Comment »
