|B.lu BOS Operating System|
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BOS has been developed and tested with a custom board.
All images and movies provided to show BOS working are referred to this board.
Anyway BOS will work on every hardware with a MSP430 microcontroller.
Here is presented an image with board features:
In Download Area high definition full size image can be downloaded (an image with board description is also provided).
BOS related schematic description is provided in documentation available from Download Area.
Dot matrix display is connected to MSP430 with two voltage level translators to adjust microcontroller 3.3V with display 5V. Direction pins are attached to MSP430 in order to set with software correct direction to read and write display.
PC RS-232 serial interface is attached to MSP430 with an interface circuit to translate RS-232 levels to MSP430 3.3V. Note DB9 connector is female.
24 buttons keyboard is realized connecting in matrix configuration 24 standard push buttons with rows in weak pull up.
Two SIPO chips are used to expand MSP430 outputs. From just three MSP430 output pins are realized 16 outputs connected to leds.
I2C temperature sensor is used to monitor temperature. There is also an alarm line used to advice MSP430 when temperature goes outside user defined range.
|hosts B.lu BOS operating system|