Hello Christoph,
As per my understanding, you want to do program Arduino web server with MATLAB App designer.
Please note that if Simulink is required for the workflow, a possible workaround is to create a ‘MATLAB S-function'.
For a model running in ‘External Mode’, you can create a ‘MATLAB S-Function', and mark it as ‘SimViewingDevice’, so there won’t be any code generated from it. MATLAB code can then, be written in the S-function to send the data to the ‘App Designer’ in real time.
Please refer to the following links below on ‘SimViewingDevice’ and MATLAB S-Functions:
I hope it helps!
