G+_Jason Perry Posted April 11, 2016 Share Posted April 11, 2016 http://www.hackinsight.org/news,596.html Link to comment Share on other sites More sharing options...
G+_Keith Mallett Posted April 11, 2016 Share Posted April 11, 2016 Awesome, thanks! Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted April 11, 2016 Share Posted April 11, 2016 One item I didn't see while skimming it is verifying the voltage o the uart rx/tx lines. (did see about not connecting to the Vcc) Using a multimeter is not the way to go. With it modulating so fast, the meter will read a lower voltage. This is where a o'scope becomes indispensable. I, personally, wouldn't trust just reading the Vcc pin for the rx/tx voltage) Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted April 12, 2016 Share Posted April 12, 2016 Great. Was wondering are there affordable O'scopes and function generators installable on your PC replacing the external equipment? Link to comment Share on other sites More sharing options...
G+_Eddie Foy Posted April 12, 2016 Share Posted April 12, 2016 PC based are junk. They will use up all the USB bandwith and more. Not too many USB 3.0 versions. Bite the bullet and get a standalone 'Scope. The Rigols are about the best bang for the buck you can get. A nice used HP, Tektronics, or Agilent off ebay is an option too. Now a PC based function generator would be fine. Could probably even use the soundcard, but would be I think, 1v p-p. Would need an external follower to boost voltage. Link to comment Share on other sites More sharing options...
G+_Rud Dog Posted April 12, 2016 Share Posted April 12, 2016 Eddie Foy it is always a joy to read your response to my questions and the monetary aspect of the questions leaves the conversation as the first fatality of the discussion. But I still follow up on your suggestions and like the fact knowledge falls in my lap when I do. Thank you. Link to comment Share on other sites More sharing options...
G+_Juan Carlos Jiménez Cab Posted April 12, 2016 Share Posted April 12, 2016 Just FYI: That post was stolen word by word from my blog. http://jcjc-dev.com/2016/04/08/reversing-huawei-router-1-find-uart/ If anybody wants to share it, I'd appreciate it if you use the original source. If you need anything you know where to find me :) Link to comment Share on other sites More sharing options...
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