We should monitor and log ~1000 devices (1..4 sensor per device). SMS and email alert and the common functions are required if anything going wrong.
I think we instead of developing the whole ecosystem in .NET/C# it would be nice to use an existing one - for example Zabbix. But is it possible without any bigger hack?
I think that the main problem is that the devices are old-school and using RS232 for communication.
Any idea or any other flexible monitoring software?
Zabbix is a good monitoring tool, and it's easy to configure sms and email alerts. You'll need to script the serial port check, as there is no built in support for that. This may help: http://ramblings.narrabilis.com/node/310
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I am trying to create a small software with C# that can be able to monitor the receive and send faxes for example: time,user etc.. I have search in google and find about FAXCOMEXLib and FAXCOMLib but I didn't find any good examples for C# only for VB. Also I was thinking somehow use the windows fax service but also I didn't find anything. Can anyone provide me a sample code for C# or a better way to do this?
p.s: I want only to monitor not even send from the software
I would take a look at Microsoft's TAPI, or Telephony API. This is a COM API that comes with Windows and makes it really simply to send or receive faxes, as well as other telephone-related activities (answering a phone, taking voicemail messsages, etc). A great place to start is the TAPI quick start application ( https://msdn.microsoft.com/en-us/library/windows/desktop/ms734257(v=vs.85).aspx ).
The Problem:
I'm writing an application that needs to receive electrical input from a machine every time the machine does something.
I have a Limit switch set up to the machine and it currently completes a circuit every time the machine does it's thing
I need it to input into a computer using usb as oppose to just complete a circuit.
I had a dataq 'dl-148u-sp' And i got the c# code to produce a graph using ActiveX controls but all i really need is the digital output from the circuit being completed (which for the life of me i couldn't figure out how to do)..
I ended up frying the device(i think) even the software it came with doesn't recognize it anymore...
I need a new device, and it turns out they discontinued the one i had, and the next one up after shipping is like 90$.
The Question:
Is there a Better/Cheaper/Easier way of doing this? Or can anyone suggest a Good device that's easy to get the output using c# code so i can incorporate it into a program i made?
It's not clear if you are asking for a hardware or software solution here. Are you asking what the best way to facilitate that data transfer from your machine to the PC? If so, this may not be the place to ask, but you might look at a USB to GPIO module.
http://numato.com/8-channel-usb-gpio-module is an example.
I'd recommend an Arduino:
http://www.arduino.cc/playground/Main/InterfacingWithHardware
They dev kits are cheap and there's a ton of open/free libraries that interface the Arduino to C#.
More expensive and complex board is IOFirebug with c# library and many functions. Input voltage range is from 5V to 30V.
If I need to post this elsewhere let me know.
We have some old software thats being re-written, that uses a printerdriver to a propriatery printer.
I need to rewrite the software bypassing the print driver and go directly to the printer. I do have the specs for the printer communication, thats fine, but what Id like to do is monitor the communications to the printer to view its contents (from the existing software that Im re-writing) and compare it to the specs, and what I will be sending it for validation.
I have to make sure Im not missing anything.
Any ideas on how I might be able to accomplish this?
Thanks
To capture the traffic you have to basic options.
1. Use software
If you are using ethernet, you can use a program like WireShark or USBTrace to capture the packets that are being sent out. There are similar programs for USB.
2. Use hardware
Another option would be to use an external logic analyzer. It's basically a box that sits in-between the computer and the printer that captures all the data, then uses software to decode it. There are some inexpensive options available (USBEE, Bus Pirate, and Total Phase Beagle.
I own a USBEE and I've used it to debug a simple USB device. It works well enough for that. The software is a little clunky though.
I have an application that one of it's features needs to control an electrical circuit of some device (open and close a circuit). Since i have no background in electronics i really don't know where to start.
I looked at some articles and found that i might need some kind of an RS232 relay device but i really don't have a clue if this is the right approach.
any help or guidance would be appreciated.
I will assume that this is a low-budget project - something like this would work :
http://www.easydaq.biz/PagesUSB/USBRelayCardProductsFRAME2.htm
Relay cards are available in USB, PCI, etc. Google will help you find something in your price range, deliverable in your region, and with a suitable number of outputs.
There are DIY ultra-cheap options, however. This would generally involve using the LPT printer port as a DIO port. The 5V lines can be used to activate power transistors that drive coils in similar relays. Have to solder your own for this kind of project. LPT bits can be set with very simple low-level memory writes.
For commercial or industrial application the prices go up (as does reliability) and the correct unit would depend heavily on the specific application and environment.
I was wondering if anyone knows how (or even if it is possible) to monitor and trigger an action when a computer running windows (7-8) starts reciving a file transfer from over the network onto one of its drives.
Bonus points if I can find out how big the file is that the other guy is placing on my machine and how much is done etc...
I want to know if there is any API in windows, or snippit of code, or some other API that provides any of this functionality.
I still want to be able to recive files, I just want to manage them better. I am on a network with over 90 computers and this software that I wish to write would be running on most of them.
Of course you can (after all it's what an Antivirus program does) but it's NOT easy and probably you'll see it's more comfortable to do in C than in C#. I'm sure there's a .NET porting of WinPCap anyway you can always P/Invoke.
Start reading about Network Monitor SDK on MSDN. It's not an easy task, you have to capture a specific set of frames, you may use a Network Packet Monitor to inspect the content and the type of the packets you have to capture and parse.
I'm not sure but you may take a look to QoS API (start reading this article), it should provide something you can use.