We are always excited when we buy a new tablet. But after a few months, it usually ends up at the bottom of a stack of papers on the credenza, the victim of not being as powerful as our desktops and not as convenient as our phones. However, if you don’t mind a thick tablet, you can make the RasPad case fit your own Raspberry Pi so that it can be used as a tablet. Honestly, we weren’t very impressed until we saw [RTL-SDR] add an SDR dongle inside the case making it a very portable Raspberry Pi SDR platform.
The box is a little interesting on its own, but be warned it costs over $ 200. For that price you get an LCD screen and driver board, battery system, speakers, and an SD expansion slot with volume and brightness control buttons. There is a video of the whole installation (in German) below.
The set weighs about 1 kg, a bit heavy for a tablet. It’s also quite thick although it’s fine for doing that kind of modification and also gives the touchscreen a nice angle when it’s flat on a table.
Most Raspberry Pi software is not configured for a touchscreen, but the post explains some of the issues they encountered when using a different Linux version instead of the case manufacturer’s default tablet software. .
We were concerned that the SDR inside the case might be prone to interference, but apparently with an external antenna it was negligible. You may however see interference when using an antenna connected directly to the box via the added RF connector. Your results could also be worse if you used an SDR dongle without proper shielding.
We think we might prefer a more futuristic form factor. You can also get SDRs that work directly with the Raspberry Pi.