Is there any option read value in Mervis from file or webservice?

I have Arduino with sensors and I would like to retrieve values from this device.

Can someone advice me?

@Martin-Kudláček any progress?

Can @tomas_hora recommend how to setup web button when it is swithed by hw button to match the current state of light and not swich at the same time?

Hello, it works.

I want control light from web(digital setter) and HW button with direct switch. But I dont know how to create this funcionality. My solution blinking the lights and I am succesfull to turn on/off lights after 2-3 attempts. Can someone help me?

Both issues can be seen on the pictures. One in results window and other in popup. Send it to email?

Do you want to send it? But I have just create empty function, add one input(bool) and one function block OR and just delete unput. Then error.

Hi, when I create function and create some inputs and outputs it gives me an error:

Error MainProgram testFunction 0 1 there is not declared any retval output for function 'thermometer'. FBD functions have to have retval explicitly declared

Error cannot find type unresolved

I don't know what to do. How to build it. There are no other options what I can setup.

Other issue is when I delete something from this function it is ok, but when I delete other variable I have this error:

Value cannot be null.
Parameter name:source.

I have controled light on RO, it is connected with wall button with DirectSwitch functionality. I want control RO from Mervis as well but it does not work. How can I do it?

Hi Martin,

yes I have tried everything:

Hello, I am making development on my HMI and suddenly login box appeared and login credentials what I can see in Mervis IDE(in PLC>User rights) are not valid, everytime I get 'Wrong username or password' error message. I did not done any change regarding security/login. I have tried to delete whole HMI project and created a dummy one but did not help. Any suggestions?

Ok. When you write it like that it makes sence :). I have readed UniPi 1st generation -> This is the same image as for Neurons -> Click -> Choosed image only with Evok. Opensource images was not familiar for me as I was looking for prepared image. Maybe try to make it more obvious and place guide from git hub on the same page, to make it consistent. Anyway thank you for your reply.