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I have sim7600E on my project PCB and I am using STM32F103 to communicate with it, I have a level logic level shifter that shifts 3.3V UART down to 1.8V UART. I used a digital analyzer to confirm that the message (for example AT\r\n) is indeed arriving at the RX pin of SIM7600E. I can also confirm that the PWR signal of the module is HIGH and I have also inserted a sim card in the sim slot and the NET light is flashing.
I am quite lost because I have searched the internet for answers and couldn't find any.
Sorry for the lack of information but I really have nothing else to provide.
If anyone has had any experience with sim7600e and could provide me with some guidance it will be extremely appreciated,
Ok so it wasn't a software issue, there was a problem with logic level converter (3.3v to 1.8v)
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Closed 5 years ago.
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I want to test some Ransomware. Therefore I wanna use VMware and create a virtual machine, where I can execute this software. I already deleted the Network device, so that no connection is possible between my computer and the VM. Do I need to know something more about it. Could it be possible that the virus breaks out and affects my PC?
Make sure that you are not playing around with Cerber 6 Ransomware because it has Anti-VM features that can easily bluff you when you are on the test. I just got to know the same from this post:http://ransomwares.net/cerber-6-ransomware/. I request you to read this post to know more about Cerber's new Anti-VM & Anti-Sandboxing features which makes it dangerous than never before!
Be sure to disable all shared folders. Also disable any CPU virtualisation acceleration, then you should be fine.
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Closed 8 years ago.
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I have a project and I need to make a building plan with server room etc, so I need to know where to place my router and what do I need to put in my server room besides My servers.
In the image below i placed my Router in my server room but I don't know if that's right
If your system is a wired system then the position of the router is not really important.
But if it is a wireless, the problem become very very very complicated. I have witness the failure of my university trying to solve your problem (i am a victim). If you want to cover your place with WiFi signal then position of WiFi router must be calculated carefully with the involving of physics otherwise you may encounter issues like signal interference, lag, lost signals and so on.
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Closed 9 years ago.
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Does an USB-Y-Cable (often found for USB 3.0 devices, for better backwards compatibility/faster speed?) like the following just splits the power or also the data? The second USB-male-plug has a thinner cable, so I think something is missing there.
I didn't find an answer on google.
Power only. There is no way for two devices to signal serially without a hub. It is however possible to have a very small hub. So, unless your "y" splitter is also a two port hub; It's power only.
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Closed 11 years ago.
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I know this may not be the correct place to post this, but how do I know if a certain chip is dead? My friend has this Atmega32 and he seems to have connected it to 9V battery for a minute maybe.. He's unsure about it, but I think the chip is damaged, So, is there any way to check if that is the case?
You have read the datasheet right! - the Electrical Characteristics section.
Even if it appears to work, parts of it may have failed, or stressed to the point that they will fail soon. Any necessary over-voltage protection should ideally be designed into your circuit's power-supply design.
Does it program? Do the I/O ports work? Did it emit magic smoke?
Likely, its dead.
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Closed 12 years ago.
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How do you connect these to your computer? Which one would be easier to burn?
The information you seek can be found by comparing the data sheets: AT89C51, AT89S51, however you will see in this first link that it states:
Not recommended for new designs. Use AT89S51.
So that probably makes your last question irrelevant, you should use the AT89S51 regardless.
With regard to your second question (which I interpret as "connecting to a development host"), I suggest that you use an off-the-shelf development board unless you have the means and skill to produce your own. In-system programming can be achieved through the UART (there's an app. note in the link above), so you'll need a PC with an RS-232 serial interface and a NULL-Modem cable (the latter may come with the board). If you do not have a serial port on your PC, get a USB serial port adapter.
Obviously you need the development tools; at leas a compiler, and for debugging you'd benefit from an emulator; again the link above has references to tools.
Overall; read the manufacturer's documentation is the answer to all your questions! ;-)