Tips:
* Pre-bend the stiff USB-A connector cable into “big omega” shape. Otherwise it would be very hard to align PI with the screw holes.
* You need to long-press the power button to turn on the tablet.
* The screen has a protective film (there is no tab, so it’s easy to miss the fact).
This is my first Raspberry Pi tablet, so I have nothing to compare.
Package:
(+) The tablet has nice packaging which contains everything needed including screwdriver.
(+) There are spare screws.
The tablet had batteries and can be charged by the included power brick.
Case:
Overall the device looks pretty nice.
The screen has big bezels like the first tablets.
The tablet is somewhat heavy at 954 grams.
(-) Port markings are very hard to see. Light gray on light gray.
Ports:
* 3x USB3
* (+) Full-sized HDMI
* Headphones port
* Ethernet
* Power
(-) The external USB ports all come from a single USB3 A port, so the total throughput might be limited compared to PI.
Screen:
The screen looks good. I see no issues.
I’ve tried to watch a full-screen 60FPS YouTube video and it looked nice. The only problem (software problem, not device) is Vsync (screen tearing) – I need to find an option to turn it on…
Touch works pretty good.
Screen auto-rotate works as expected. (It’s pretty sluggish (understandable, given the system performance))
The screen has brightness control buttons and OSD that shows up when you make adjustments.
The screen can also show low-battery sign which is useful.
Sound:
Sounds OK. I did not notice anything bad. But I’m not an audiophile.
Fan:
Initially I completely forgot about the fan. Only when I turned off the tablet I’ve realized that the fan was audible. The fan was pretty quiet and the sound was OK. Although on one startup I heard a growling sound for a second, but it disappeared right away. For now the fan seems pretty quiet and usually does not bother me. Let’s see how it sounds in the future.
Update: sometimes the fan is buzzing a bit.
I’ve checked the fan grill (which is smaller than the fan) and I feel almost no wind. I wonder whether the fan shroud is efficient.
Battery:
There is a 3-LED battery level indicator on the side.
The tablet can be charged while on.
It took me several hours to charge the batteries.
I have not formally tested how long the tablet can work on battery.
Power button:
Short-pressing the button makes the PI sleep/hibernate immediately. Another press and it wakes up.
Additional thoughts about the design:
The product has interesting and complex engineering. Most ports are forwarded via cables (USB-A, USB-C, Ethernet, 2x micro-HDMI, microSD). So, for example, there are 3 Ethernet ports in total (1 on the PI, one internal, one external). But I wonder whether all of that difficulty was necessary.
What if the back box was the size of Pi with few very slim connectors (slim like the microSD extender) grabbing several ports: 1 USB-A, USB-C. The screen could have been connected via DSI cable or a slim 90-dgree micro-HDMI connector.
Full testing log:
The instruction manual has couple of small issues
* Error: The manual says “attach the fan with the four M2.5×9 screws.” but the proper screws are not m2.5 – they are smaller.
* Nit: the fan screw caps are too big to fit the hole or too small to go well over the hole.
* “Go see a tutorial at https://raspad.rtfd.io”, but the page is not the main docs page. Main docs page is at https://docs.raspad.com/en/latest/
(+) The Ethernet cable is neatly reversed for easier insertion.
(-) USB connector cable hard/thick and is shorter than ethernet cable. But also longer than the needed distance. So it strongly pushes the Pi away from the proper location. You have to make a bend in the hard and stiff USB A cable to align Pi with the screw holes
The other cables have pretty OK length. But they are also a little bit longer and somewhat stiff.
I had to use a lot of force to push the PI to align with the holes and feared a bit that the pressure could tear the USB-A ports off from the PCB.
The MicroSD extender is an interesting solution. Nitpick: The microSD extender ports are not fully aligned, but this does not matter.
Accelerometer module is nice and tiny.
I’ve connected the tablet to the power brick. One green led started blinking.
I’ve tried to press the power button, but nothing happened. Turns out you need to long-press the button to start.
I’ve turned the tablet on.
It booted and I hear “To install the screen reader press control alt space”
I’ve read the instructions and installed the “onboard” virtual keyboard, the screen auto-rotator and the launcher.
The virtual keyboard works, but there can be some glitches. For example, the keyboard buttons that happen to be on top of the window boarder often do not work. that At one point the screen went dark and the login prompt appeared. I was unable to log into the system and had to restart the device.
All of this is unrelated to SunFounder or RasPad though – just the state of Linux software.
The launcher makes Raspberry Pi menu more touch-friendly by making UX bigger. It’s a bit sluggish to activate though.
Overall, this seems to be a usable Raspberry Pi tablet shell.
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