Our PHP library has supported SSL/TLS encryption for several months now. This makes it possible to use the library to connect to VirtualHub v2.0 and VirtualHub for Web. Let's take a look at how to use this feature to establish a secure connection between the library and VirtualHub.
The Yocto-Knob and Yocto-MaxiDisplay variants have analog inputs for connecting interface buttons: pushbuttons, rotary knobs. However, there was one type of button that was not supported: infinite rotary buttons with quadrature encoder. This limitation has now been lifted.
This week, we'll be talking about our PHP library, HTTP callbacks, and VirtualHub for Web. In particular, how to use the three together.
To take measures in the middle of nowhere and to transmit them to a server, the simplest solution is usually to use a low-power 4G network such as LTE-M or NB-IoT to send them periodically to a server. For example, you could use a YoctoHub-GSM-4G configured to perform HTTP callbacks to a PHP server using VirtualHub for Web. But what if one day the hub stops connecting to the server?
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