Handlet™ – Simplest Scenariowphandletuser
The simplest scenario to use Handlet™ is to attach only Raspberry Pi 4B and screen to it. The downside of this is that you need to carry the transformer with you since no battery is installed. This setup is best for “docking station” situation, i.e. you don’t move the Handlet™ much around and use it e.g. at the office with external screen and keyboard/mouse attached.
No soldering or wiring is needed!
Get the Raspberry Pi 4B from any dealer of your want. All types are supported, i.e. 2GB, 4GB, 8GB. Also, any SD-card of your desire is needed with minimum of 16GB of space and get the image from official Raspberry Pi site. We recommend preparing the SD-card with Raspberry Pi Imager. Please, see also this article how to remove the SD-card from Handlet™ Case Cover if needed.
Any 5″ screen designed for Raspberry Pi should fit. Please, see the supported screen sizes article for more information. Also some DSI cable is needed to get the screen and Raspberry Pi connected to each other. 10cm cable long should be enough. However, the installation might be easier with longer cable.
Step 1. Install Raspberry Pi 4B to the Handlet™ Case Cover
Start sliding the Raspberry Pi 4B to the Handlet™ Case Cover. The easiest way to accomplish this is to check that the USB and Ethernet ports are properly aligned when starting the installation. Give some final push to get the Mic port to its holster and that’s about it. Use proper screws as mentioned in the presequites.
Step 2. Install 5" screen and connect to Raspberry Pi 4B
Start 5″ screen installation by putting the screen to the Case Cover, pay close attention to the direction of the screen. Attach the Display Brackets with proper screws to keep screen properly in place. Once screen is attached, it’s time to connect the screen to the Raspberry Pi 4B with DSI cable. Please, check presequites for more information about the 3D accessories and what screws to use.
Step 3. Install SD-card
Once SD-card has properly running OS as mentioned in the presequites, it’s time to install it to the Handlet™ Case Cover. Start by inserting the SD-card to the empty slot at the bottom of the Case Cover. Push it to the end until it doesn’t go any further. That’s all! If you need to remove the SD-card, check the presequites for link to the tutorial.
Step 4. Install Button Covers
In the simplest scenario there are no buttons installed to the Handlet™. However, there are covers for those available to prevent dust and other security issues. This step is not absolutely necessary if you just want to try out things. Please, check presequites for more information about the Button Covers.
Step 5. Putting it all together
At this point it’s time to put it all together, i.e. attach top and bottom parts of the Handlet Case Cover to each other. This is explained carefully in the tutorial mentioned in the presequites. Also, what screws to use is mentioned there. After this the Handlet™ in the simplest scenario is ready for heavy use!
Congrats! You have now assembled successfully Handlet™ in the simplest scenario without battery or any accessories. This is good starting point for other projects!