We have equipped some of our classrooms with fixed beamers and more will follow. From time to time the desire is expressed to see whether you can ‘simply’ transmit a picture / video or the whole screen wirelessly from your smartphone or private laptop. Up to now we have provided a VGA / HDMI cable for our own devices. This usually works quite well, but this excludes smartphones, for example. That’s why we have been investigating and testing solutions for wireless presentation to a projector and screen for some time now, and whether they really are better and more reliable than a wired solution.
Our requirements are as follows:
There are many HDMI wireless dongles that promise wireless presentation. In addition, there are the many different standards: Google’s Chromecast, Apples Airplay, Microsoft’s Wireless Display Adapter (Miracast). If only one operating system had to be supported, the selection would be quite large. I know schools that have equipped their classrooms with Apple TVs and give each colleague an iPad. This works quite well within this ecosystem, but we don’t have this budget 🙂 For this reason, there are very few options if you want to support Linux.
The Chromecast is HDMI stick, which supports a large number of devices, actually everything a Chrome / Chromium Browser runs on. You can easily transfer single tabs, the whole screen or content from certain apps (e.g. Youtube App) to the projector or a screen.
Generally speaking, it can be said that the Chromecast is designed for home use and therefore lacks some of the features that might be useful in a school or university network.
Airtame is another HDMI dongle that promises very easy handling and has been specially designed for schools, companies and universities. As far as I know, Fedora is running on the stick itself.
Chromecast and Airtame are two options for wireless presentation. Airtame is actually the device you want for a school, but it has its price. Chromecast, on the other hand, is much cheaper, but does not offer some features that would be “nice-to-have”. We are currently testing the Chromecast and seeing how good and reliable it is in everyday school life and “multi-user operation”. Especially the simplicity of operation has to be tested, e.g. how this differs on the individual platforms.
Which device do you use for wireless presentation?
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