This page documents features from more engineering point of view. For a more user-centric point of view, see Features.
Major Balthazar parts are:
Power Controller and battery
These supply power to the rest of the system, particularly the System on a Module, USB Hub and Display subsytem. It also manages battery.
It should be capable enough to run some USB connected hardware.
See more: Power Supply
System on a Module (SoM)
This is the main system board, the computer. Boards from different makers should be supported.
Minimum of ports is required for wider compaitibility. These are: Power, USB and HDMI.
See more: System on a Module
I/O USB hub
IO-board basically means connectivity with peripheral devices. These can be seen as on-board and out-board. On-board devices include: keyboard + trackpad, webcam and optional audio-card. USB is the usual solution for this.
For more see our I/O USB page.
Single PCB solution for connecting the three previously designed Balthazar modules (I/O, power supply, USB 2.0, 3.0 controllers, keyboard and adding Compute Module compatible FPGA boards. For more info see our Unifying-PCB page.
Display Controller and a screen panel
Provides interface to display panel by HDMI
Panel slim screen.
Resolution: 1920 x 1080
Aspect Ratio: 16:9
Pixel Pitch(mm): 0.1529 x 0.1529
Active Area(mm): 294.06 x 165.54
Outline(mm): 299.96 x 186.92
View Angle (U/D/R/L): 89/89/89/89
Contrast Ratio: 800:1
Support colour: 16.7M
Colour Depth: 8 bit
Colour Gamut (NTSC): 72%
Response Time(ms): 25
Power consumption: 3.7
Weight: 170 g
Frame Rate: (Hz)60Hz
Electrical Interface: DP 1.3
Ultra-slim thickness: 2mm
Test screen on Unifying Board with CM4 module working. Also works in a full configuration.
Initial casing is meant to be made of a recyclable vegetable oil based plastic. Also the idea of a modular design gave us even more sustainable materials to look at - pressed used clothes in resin, cans recycled pressed aluminium and even resin-ed wood saw.
Here are elements we have been working with so far and slowly shaping the final design and a certain materials together.
On our Github page you can look into the .stl files too.
Chronological pictures and a phases of the development:
Keyboard and Touch-pad
See more: Keyboard
We did implementation and tests with this battery set:
Battery size: 21700
Battery chemistry: Li-ion
Min. capacity in mAh: 4,800.00
Battery version: Flat top
Discharge current: 9.60
Protection circuit: Unprotected
Diameter in mm: 21.00
Battery implementation and tests. Charging and operating.
OLED small screen for keyboard
OLED Module: display OLED
33x20mm - 0.91"
Software depends on a System on a Module used.
See more: Software