spacelab-ufsc / eps2 Goto Github PK

https://www.ti.com/product/TLV341A

TI DriverLib: https://www.ti.com/tool/MSPDRIVERLIB

https://github.com/spacelab-ufsc/obdh2/tree/master/firmware/drivers/tca4311a

Suggested version: v1.5.16

This can make it easier to find components on the PCB.
Source: https://www.altium.com/documentation/altium-designer/pcb-dlg-setupannotatepositional-re-annotate-ad

https://www.ti.com/lit/ds/slvsc56b/slvsc56b.pdf

The current BOM available here describes the D17-D22 diodes as LEDs. The correct part number is NSVR0320MW2T1G

This issue is related to #44 and #45.

This feature will help to automated the generating of BOM and schematics with a "X" marker in DNP components.

Source; https://www.altium.com/documentation/altium-designer/workspacemanager-dlg-variantmanagementformvariant-management-ad#:~:text=Each%20component%20in%20the%20base,such%20as%20the%20component's%20value.

https://www.ti.com/product/ADS1248

Source: https://www.altium.com/documentation/altium-designer/bom-management-with-activebom-ad

https://github.com/spacelab-ufsc/obdh2/tree/master/firmware

Use the OBDH 2.0 firmware as reference: https://github.com/spacelab-ufsc/obdh2/tree/master/firmware

Source: https://github.com/spacelab-ufsc/obdh2/tree/master/firmware/devices

To increase or decrease the output voltage of the buses, a few componentes must be changed in each converter. To reach the desired output power on the radio of the beacon, its input voltage must be increased to 5,5 or 6 V (TBD).

The output voltage value can be increased by changing the value of L1, R4 and R6. Check the datasheet of the converter to define the new values.

Converter datasheet: https://www.ti.com/lit/ds/symlink/tps54540-q1.pdf

The current model has a maximum continuous current of 1 A. This value must be increased to at least 2 A (with 2 solar panels in parallel, the maximum nominal current can reach 1 A or more).

Blocking diodes designator: D17 to D22

This will make EPS 2 compatible with both battery board 1.0 and battery board 2.0, currently when updating the pcb one of them disappears because it is not on schematic.

Obs: Remeber to update schematics pdf and full pdf .
Obs2: Use [no variation] for the output file.

Current old block diagram is displayed below:

Review if the components are available in Mouser or Digikey.

In a automated PCB assembly the variants are necessary to avoid placement of DNP components.

This allows more flexibility for changing the buses purpose or the default state of the enable, if necessary.

Add an option sheet (as an appendix) with instructions about the necessary components for each optional circuit or montage.

https://datasheets.maximintegrated.com/en/ds/MAX9934.pdf

Review the components parameters (check the partnumbers, comments, values and etc).

Tip: Enumerate here the components designators with inconsistency.

Source: https://github.com/spacelab-ufsc/obdh2/tree/master/firmware/drivers

SpaceLab documentation template: https://github.com/spacelab-ufsc/doc-template

Look at OBDH2 devices for reference.

Use the EPS implementation as reference: https://github.com/spacelab-ufsc/eps/blob/master/firmware/onewire.c

IC datasheet: https://br.mouser.com/datasheet/2/256/DS2775-DS2778-1513647.pdf

EPS 1.0 documentation is available here: https://github.com/floripasat/eps/wiki

The startup task executes the boot sequence of the system. This is a non-periodic task (single shot).

Fiducials must be components placed in schematic to avoid its removal when updating the pcb document.

EPS implementation: https://github.com/spacelab-ufsc/eps/blob/master/firmware/onewire.c

Usually the solar panels already have blocking diodes. This way, the EPS module does not need internal blocking diodes (D17-D22).