Part Library for the Raspberry Pi Tablet

Working Doc

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Part Library

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  Tablet Final Assembly - FreeCAD -File:Raspiassy.fcstd

• 

  Raspberry Pi in case. - FreeCAD -File:Piincase.fcstd

• 

  TouchScreenPrimitive - size:nullkb - FreeCAD -File:TouchScreenPrimitive.fcstd

• 

  Raspberry Pi 4 Board - FreeCAD -File:Raspi.fcstd

• 

  1 Battery Power Pack - FreeCAD -File:1batpack.fcstd

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  5 Battery Power Pack - FreeCAD -File:5batpack.fcstd. FreeCAD -File:5batpack.stl

• 

  PiTabletConcept - FreeCAD -File:PiTabPrimitive.fcstd

• 

  Pi Base + External Ports WIP - size:nullkb - FreeCAD -File:PiboardandMount.fcstd

• 

  Tablet Layout WIP - FreeCAD - File:TableCase.fcstd

Add-On Modules

1. Cordless welder battery pack that also serves as a long-life battery add-on

Data Collection

• 4.2V after charging 5-set of batteries
• One battery was loose - the connector wire was not over the hole but offset to the side

Build

• Parts start - [1]

Software

Android options

Industrial Android on rPi: https://emteria.com/ Not sure it might be NC, or maybe that's just the service layer they are selling on top of what seems to be mostly a business use case

Also trying other Android Options:

• LineageOS (formerly Cyanogenmod): https://konstakang.com/devices/rpi3/LineageOS15.1/
• Android for RPi: https://www.makeuseof.com/tag/install-android-raspberry-pi/

Keyboard options

Note: Best touchscreen keyboard application on the Raspbian so far is Florence<\b>
> sudo apt-get install florence

Also trying several other linux on screen keyboard options while building android images to try:

• GOK (GNOME Onscreen Keyboard)
• kvkbd
• onboard
• Florence

Raspbian installation

Based on the NOOBS install: https://www.raspberrypi.org/downloads/noobs/

SD card must be FAT formatted, at least 8GB and preferably 16GB: https://www.raspberrypi.org/documentation/installation/noobs.md

It's handy to have a usb keyboard and mouse to navigate the install process once the prepared SD card is on the rPi.

Cura

I had issues trying to run Cura on the Raspbian, it kept crashing. It seems like someone has compiled a version and posted it in the ultimaker forums that will run on the RPi processor: https://community.ultimaker.com/topic/28746-experimental-cura-build-for-raspberry-pi-4-now-available/

Downloads: https://www.dropbox.com/sh/s43vqzmi4d2bqe2/AAADdYdSu9iwcKa0Knqgurm4a?dl=0

Install procedure: Once the appimage file is downloaded (I used Cura-mb-master-armhf-20191209.AppImage), make the file executable
> chmod +x Cura-mb-master-armhf-20191209.AppImage

Then you just need to run the app image file:
> ./Cura-mb-master-armhf-20191209.AppImage

Camera

From https://projects.raspberrypi.org/en/projects/getting-started-with-picamera/3

Once it's plugged in, Camera just needs to be toggled on in the config -> "interfaces"

Once restarted, you can take a picture like this:
> raspistill -o Desktop/image.jpg

This will activate the camera module and show a view finder, until you hit "Enter" and it saves a picture to the specified location.

Links

• January_2020_Open_Source_Microfactory_STEAM_Camp