Difference between revisions of "Specifications"

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This is the main system board, ''the computer''. Boards from different makers should be supported.  
 
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.
+
Minimum of ports is required for wider compatibility. These are: Power, USB and HDMI.
  
 
See more: [[System on a Module]]
 
See more: [[System on a Module]]
Line 27: Line 27:
  
 
For more see our [[I/O USB]] page.
 
For more see our [[I/O USB]] page.
 +
 +
==Unifying-PCB==
 +
 +
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]]==
 
==Display Controller and a [[screen panel]]==
Line 52: Line 56:
 
Contrast Ratio: 800:1
 
Contrast Ratio: 800:1
  
−
Support color: 16.7M
+
Support colour: 16.7M
  
−
Color Depth: 8 bit
+
Colour Depth: 8 bit
  
−
Color Gamut (NTSC): 72%
+
Colour Gamut (NTSC): 72%
  
 
Response Time(ms): 25
 
Response Time(ms): 25
Line 71: Line 75:
  
 
Ultra-slim thickness: 2mm
 
Ultra-slim thickness: 2mm
 +
 +
 +
Test screen on '''Unifying Board''' with CM4 module working. Also works in a full configuration.
 +
 +
<gallery>
 +
File:DSI1 balt.screen.png
 +
File:MIPI display.png
 +
File:DSI1 balt cabling.png
 +
File:DSI1 balt fix.png
 +
</gallery>
  
 
==Case==
 
==Case==
 +
 +
Case design is described on a [[Case design|dedicated page]].
 
   
 
   
−
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.
+
==Keyboard and Touch-pad==
 +
 
 +
For specific Balthazar keyboard, see: [[Keyboard]]
 +
 
 +
We develop add-on PCB to accommodate well known and basically industry standard keyboard as it is found in ThinkPad x2XX series.
 +
This will enable users to use an inexpensive replacement keyboard should they have need for it.  
 +
Casing design envisage accommodating frame to fix additional keyboard in place.
 +
 
 +
Touchpad on specific Balthazar's keyboard is connected via I2C bus.
 +
 
 +
==Battery==
 +
 
 +
We did implementation and tests with this battery set:
 +
 
 +
Brand:                 Samsung
 +
 
 +
Battery size:         21700
 +
 
 +
Battery chemistry: Li-ion
 +
 
 +
Battery:         Rechargeable
 +
 
 +
Voltage                 3.6V
 +
 
 +
Min. capacity in mAh: 4,800.00
 +
 
 +
Battery version: Flat top
 +
 
 +
Discharge current: 9.60
 +
 
 +
Protection circuit: Unprotected
 +
 
 +
Height:                 70.00
 +
 
 +
Diameter in mm:         21.00
 +
 
 +
 
 +
Up to 6 batteries are proposed to power Balthazar, however an additional Battery Control Monitor should be implemented
 +
or as a separate unit. Also, research into other battery systems is done.
 
   
 
   
−
Here are elements we have been working with so far and slowly shaping the final design and a certain materials together.  
+
Current battery candidate implementation and tests. Charging and operating.
 +
 
 +
<gallery>
 +
File:Batt.5V out.png|5V
 +
File:Batt ch test12V.png|12V
 +
</gallery>
  
−
Chronological pictures and a phases of the development:
+
Those are battery packs we assembled and into the carrier that fits into the case.
 +
In our prototype phase, we implemented those without Battery Charger Monitor.
 +
Next stage will be with a BCM PCB. 
  
 
<gallery>
 
<gallery>
−
File:DownBody.png |thumb|
+
File:Bat2.png
−
File:Frame.png|thumb|
+
File:Bat3.png
−
File:KeyPad.png|thumb|
 
−
File:ScreenBack.png|thumb|
 
−
File:Speaker.png|thumb|
 
−
File:Basic1.png|thumb|
 
−
File:Basic2.png|thumb|
 
−
File:Basic3.png|thumb|
 
−
File:Basic4.png|thumb|
 
−
File:Basic5.png|thumb|
 
−
File:Basic6.png|thumb|
 
−
File:Basic7.png|thumb|
 
−
File:Basic8.png|thumb|
 
 
</gallery>
 
</gallery>
  
−
==Keyboard and Touch-pad==
+
==OLED small screen for keyboard==
 +
 
 +
OLED Module: display OLED
 +
 
 +
3.3÷5VDC
 +
 
 +
I2C
 +
 
 +
33x20mm - 0.91"
  
−
See more: [[Keyboard]]
+
<gallery>
 +
File:Oled1.png
 +
</gallery>
  
 
==Software==
 
==Software==

Latest revision as of 17:18, 21 October 2024

This page documents features from more engineering point of view. For a more user-centric point of view, see Features.

BalthazarBlockDia122.svg

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 compatibility. 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.

Unifying-PCB

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

PPI: 166

Active Area(mm): 294.06 x 165.54

Outline(mm): 299.96 x 186.92

Luminance(nits): 300

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

Backlight: LED

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.

  • DSI1 balt.screen.png
  • MIPI display.png
  • DSI1 balt cabling.png
  • DSI1 balt fix.png

Case

Case design is described on a dedicated page.

Keyboard and Touch-pad

For specific Balthazar keyboard, see: Keyboard

We develop add-on PCB to accommodate well known and basically industry standard keyboard as it is found in ThinkPad x2XX series. This will enable users to use an inexpensive replacement keyboard should they have need for it. Casing design envisage accommodating frame to fix additional keyboard in place.

Touchpad on specific Balthazar's keyboard is connected via I2C bus.

Battery

We did implementation and tests with this battery set:

Brand: Samsung

Battery size: 21700

Battery chemistry: Li-ion

Battery: Rechargeable

Voltage 3.6V

Min. capacity in mAh: 4,800.00

Battery version: Flat top

Discharge current: 9.60

Protection circuit: Unprotected

Height: 70.00

Diameter in mm: 21.00


Up to 6 batteries are proposed to power Balthazar, however an additional Battery Control Monitor should be implemented or as a separate unit. Also, research into other battery systems is done.

Current battery candidate implementation and tests. Charging and operating.

  • 5V

  • 12V

Those are battery packs we assembled and into the carrier that fits into the case. In our prototype phase, we implemented those without Battery Charger Monitor. Next stage will be with a BCM PCB.

  • Bat2.png
  • Bat3.png

OLED small screen for keyboard

OLED Module: display OLED

3.3÷5VDC

I2C

33x20mm - 0.91"

  • Oled1.png

Software

Software depends on a System on a Module used.

See more: Software

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