So, I have a project that I'm not quite sure how to get started on. I need to get serial output from a digital panel meter (currently using one with RS 485 output but that can change) to a mobile device, either Android or Windows. The eventual goal is to get the numbers displayed on 2 different meters to show up on an Android/Windows tablet, and to do some simple calculation with those numbers.
I'm familiar with Android and software development, so I dont think making a simple app for either OS is really my limiting factor. The real issue is that I am unfamiliar with RS 485, and there's limited information out there in terms of tutorials and instructions on how to get information from this port. I have done a little work with microcontrollers so my initial idea was to somehow go from RS 485 to Arduino/microcontroller to Bluetooth/internet to the tablet, but the first step is getting data from the digital meter.
I don't exactly know how to get started, and maybe this is the wrong place to ask, but hopefully someone can help me get a better idea of what I should be doing/where else I can look to learn how to do this. I have some leeway in terms of what devices are being used, so I can change the digital meter to one that has an RS 232 output if that helps (possibly even one with USB but I'm not sure). The microcontroller needs some way to wirelessly communicate with a tablet but as long as it meets that requirement, I don't have anything specific in mind. I've looked up "RS485 to Arduino", and there are a few products that seem applicable (RS485 shield, TTL to RS-485 module) as well as a few threads on other forums, but I'm still having trouble figuring out how exactly I'm going to get the data from the meter to some format that a programmer would be familiar with.
Sidenote: at least one digital meter I've looked at has had some functionality called Devicenet that just from the name seems like it might do some kind of wireless communication which would let me cut out the Arduino middleman. If anyone knows what Devicenet is and what it does, I would greatly appreciate if you told me whether it's something I should look into.
Thanks for all the help!
I'm familiar with Android and software development, so I dont think making a simple app for either OS is really my limiting factor. The real issue is that I am unfamiliar with RS 485, and there's limited information out there in terms of tutorials and instructions on how to get information from this port. I have done a little work with microcontrollers so my initial idea was to somehow go from RS 485 to Arduino/microcontroller to Bluetooth/internet to the tablet, but the first step is getting data from the digital meter.
I don't exactly know how to get started, and maybe this is the wrong place to ask, but hopefully someone can help me get a better idea of what I should be doing/where else I can look to learn how to do this. I have some leeway in terms of what devices are being used, so I can change the digital meter to one that has an RS 232 output if that helps (possibly even one with USB but I'm not sure). The microcontroller needs some way to wirelessly communicate with a tablet but as long as it meets that requirement, I don't have anything specific in mind. I've looked up "RS485 to Arduino", and there are a few products that seem applicable (RS485 shield, TTL to RS-485 module) as well as a few threads on other forums, but I'm still having trouble figuring out how exactly I'm going to get the data from the meter to some format that a programmer would be familiar with.
Sidenote: at least one digital meter I've looked at has had some functionality called Devicenet that just from the name seems like it might do some kind of wireless communication which would let me cut out the Arduino middleman. If anyone knows what Devicenet is and what it does, I would greatly appreciate if you told me whether it's something I should look into.
Thanks for all the help!