Print something remotely on paper [closed] - printing

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I need to print some kind of black-and-white receipts at an office. No human interaction should be required. Print jobs will come from my webserver.
I would love to have a printer available by a simple web-API.
Google-cloud-print comes to mind. But it's in Beta and I've been testing it with my own printer and it doens't work all the time.
I could have a small windows PC hooked up to a printer, but what kind of software does it need to run to listen for new printjobs and print them out?
How about some kind of Arduino-wifi-printer solution?

Google Cloud Print has worked for me in the past. Also, newer HP printers supporting ePrint can be setup with an email address that you can send print jobs directly to

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How to find link to media in any site [closed]

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Note
I barely have any knowledge on web development but got some idea.
What I'm doing
I'm trying to make a Rust program to scrape any link to a media in a website, like how JDownloader 2 does. Not required to find all media, just any media this is simple enough to get.
Problems
Resolving links to media (Blob, Data)
Site that result differently on browser to a single get request (I have some idea that this might need a web driver but I want to have least dependency as much as possible)
Question
How did JDownloader find these media so I can implement it in my crate? (Just enough information to get start)

To get data from sensors and upload them to a database [closed]

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I have a question about arduino world. I've been wondering about how I can get data from a sensor - maybe it's connected arduino machine - and upload that data to a database on the internet environment. Is this possible ? Would you please share your experience and thoughts ?
Thanks a lot.
One way is to get the sensor data on the Arduino, have the Arduino speak to a host PC over serial, and let the host PC post the data to an internet site.
Another way is to mount an "ethernet shield like this to your Arduino, and compose a tiny http message directly from your Arduino.
Beyond those broad outlines, we'll have to have specific programming questions to help you more, because this is more of a project than a question appropriate for Stack Overflow. Good luck, and ask for specific help when you need it.

How to get LogicMonitor data into grafana? [closed]

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I want to run load & performance tests and monitor them via Grafana. I have the JMeter Dashboard and JenkinsCI Dahsboard setup and running, so I can see the client side data in real time. This is a good setup.
What's next, is trying to combine the Server Side Data concurrently with the Client Side data at the same time, within the same dashboard. I have a LogicMonitor installation for the Cloud Instances on AWS.
Does anyone know how to do this?
Suggestions?
As it turns out, you cannot do this. Logic Monitor Does not use InnoDB for format, so, it's not an easy port over to the data.

Want to setup a voice-to-voice communication service/group call service on rails. Where should I start? [closed]

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I already have a fair bit of experience making rails applications, but I have never really tried to make an application with the use of a microphone. I don’t need to have video call, only voice, but I would want to control how many people could connect to a single call. Also I would like it to not have to do with actual phone numbers, but have a completely separate service like skype. Any help would be appreciated, Thanks!
This is not a trivial rails app, but just from googling I found Adhearsion
Check it out: http://www.adhearsion.com/
Adhearsion is a full-featured framework for the development of
applications which interact with or control voice communications.

fiscal printer for iOS [closed]

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I'm developing an iOS application for a bar, it will be used by the waitress, when the an order it's completed the application should be able to print the receipt using a fiscal printer.
I've never done something like this. does any of you have any experience?
would you be able to suggest a specific device that allow an easy integration with an iOS app? are there any standard protocol?
You can use two SDKs distributed by printers manufacturers that work great with the iPhone:
http://www.crs-usa.com/softsnbc.asp - this one works with SNBC BTP models, and the printer should have Wi-Fi or a Ethernet cable to connect to the same network.
http://www.starmicronics.com/ios-android.htm - this one works with Star printers (the same ones Square uses)
In both cases, the SDK needs to get connected to the printer IP, and this can be quite tricky/complicated in the beggining.
But I would start deciding which printer to buy/support, and then start implementing it.

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