mansilla wrote:
Im still novise so not to complex pls.
From reading this thread, and making a few assumptions, namely that the OP presently would seem not to have the necessary skills to undertake what would seem to be a more complex project than a novice could undertake, I support those who say that you really should be looking to either, buying a ready made product or hire someone who can and does fully understand all parts of what your needs are.
There is one component about your project that suggests to me a need for a high level of safety, as you are dealing with mains potential of 230VAC. Mixing this with small boards like Arduino, needs attention to maintaining the required level of safety.
Since this is being used in a business where other people may use this device you have in mind, you will also need to think carefully about your liability in terms of what happens if other of the other staff members of the business unfortunately gets electrocuted and suffers or dies from your device, where do you stand in terms of the law?
You go on to say:
The exact reading and values are not important. We just need to check if the different 230v systems in the caravans works roughly around the levels they are suppose to. Also its mainly the part of 230v watt reading functions im intressted in, not the cordless data transmission part.
I am trying to untangle and make sense of your words, but, again I can only make a guess, and that is you want some form of data logger that will read and record the power levels in Watts of the mains connected appliances in the caravan as you switch them from off to on or from off to different power levels.
And that you wish this to be more automated than the method you are currently doing, is this correct?
I was thinking of using a ACS712, but there are no tutorials out there that shows this using 230v
There is an abundance of online information on these devices, but being a current device, they are therefore by definition, independent from the voltage on the line you are measuring, within the specifications of the device.
Be aware that if you are measuring an AC signal, you will need to process the signal in either hardware or software to derive the RMS of the sinusoidal signal.
What you need to do is to think about and write down a list that clearly defines what your needs are.
For example, will you only measure power in Watts?
If so, you need to know the volts and the current and power factor of each device to be able to calculate power in Watts.
What is the range of the Watts you wish to measure, and to what accuracy ?
Do you need to know power consumption, as in Watt Hours ?
Do you need to be able to produce a document or report as proof of evidence, for your own records or for others ?
There will be other things on this list I am sure.
My honest opinion is that for you to design and develop and put into operation a system that will fulfil your needs and remain safe may well be more complex than you capable of undertaking at this stage.
Note: Please keep in check your usage of emotive language as in your post #8, people here tend not to tolerate it very well and and any help offered may well diminish fast. I'm sure Robin recalls a recent thread where we had this happen.
Paul