# Hardware/Pixhawk Dev Call: Mar 09, 2023

**URL:** <https://discuss.px4.io/t/hardware-pixhawk-dev-call-mar-09-2023/31060>\
**Category:** Pixhawk\
**Created:** [February 28, 2023, 5:01pm UTC](https://discuss.px4.io/t/hardware-pixhawk-dev-call-mar-09-2023/31060 "2023-02-28T17:01:57Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![rroche](https://discuss.px4.io/user_avatar/discuss.px4.io/rroche/32/17635_2.png) [@rroche](https://discuss.px4.io/u/rroche)\
**Post date:** [February 28, 2023, 5:01pm UTC](https://discuss.px4.io/t/hardware-pixhawk-dev-call-mar-09-2023/31060/1 "2023-02-28T17:01:58Z")

</div>

# Mar 09, 2023

## Call Moderators

- @rroche

## Agenda Items

- PAB X2 Spare Pin Assignment discussion
- How to catalog all base boards and differences

## PAB Discussion

We have a deadline of March 23th for feedback

> <https://github.com/pixhawk/Pixhawk-Standards/issues/35>
>
> As discussed in the \[Hardware dev call\](https://discuss.px4.io/t/hardware-pixhaw…k-dev-call-feb-23-2023/30814)
> 
> We propose an update of DS-010 to assign some applications to the spare pins on the X2 PAB connectors.
> 
> We want to introduce 3 extra applications
> 
> \- Ethernet RX\_ER and PHY\_INT pins
> \- CAN3 
> \- 4 Extra channels from the FMU
> 
> Which would result in the following pinout of PAB X2 changes are in \*\*bold\*\*
> | Pin Name | "was" Label | "was" Voltage | "Proposed" Label | "Proposed" Voltage | Direction |
> |--------------|--------------|---------------|------------------|--------------------|--------------|
> | Pin 2 | ETH\_MDIO | 3V3 | ETH\_MDIO | 3V3 | Input/Output |
> | Pin 4 | ETH\_MDC | 3V3 | ETH\_MDC | 3V3 | Output |
> | Pin 6 | ETH\_POWER\_EN | 3V3 | ETH\_POWER\_EN | 3V3 | Output |
> | Pin 8 | GND | 0V | GND | 0V | |
> | \*\*Pin 10\*\* | SPARE01 | NC | \*\*ETH\_RX\_ER\*\* | \*\*3V3\*\* | \*\*Input\*\* |
> | \*\*Pin 12\*\* | SPARE02 | NC | \*\*ETH\_PHY\_nINT\*\* | \*\*3V3\*\* | \*\*Input\*\* |
> | \*\*Pin 14\*\* | SPARE03 | NC | \*\*GND\*\* | \*\*0V\*\* | |
> | \*\*Pin 16\*\* | SPARE04 | NC | \*\*FMU\_CH9\*\* | \*\*3V3\*\* | \*\*Output\*\* |
> | \*\*Pin 18\*\* | SPARE05 | NC | \*\*FMU\_CH10\*\* | \*\*3V3\*\* | \*\*Output\*\* |
> | \*\*Pin 20\*\* | SPARE06 | NC | \*\*FMU\_CH11\*\* | \*\*3V3\*\* | \*\*Output\*\* |
> | \*\*Pin 22\*\* | SPARE07 | NC | \*\*FMU\_CH12\*\* | \*\*3V3\*\* | \*\*Output\*\* |
> | \*\*Pin 24\*\* | SPARE08 | NC | \*\*GND\*\* | \*\*0V\*\* | |
> | Pin 26 | SPARE09 | NC | SPARE09 | NC | |
> | Pin 28 | SPARE10 | NC | SPARE10 | NC | |
> | Pin 30 | SPARE11 | NC | SPARE11 | NC | |
> | Pin 32 | SPARE12 | NC | SPARE12 | NC | |
> | \*\*Pin 34\*\* | SPARE13 | NC | \*\*GND\*\* | \*\*0V\*\* | |
> | Pin 36 | SPARE14 | NC | SPARE14 | NC | |
> | Pin 38 | SPARE15 | NC | SPARE15 | NC | |
> | \*\*Pin 40\*\* | SPARE16 | NC | \*\*CAN3\_TX\*\* | \*\*3V3\*\* | \*\*Output\*\* |
> | \*\*Pin 42\*\* | SPARE17 | NC | \*\*CAN3\_RX\*\* | \*\*3V3\*\* | \*\*Input\*\* |
> | Pin 44 | PG6 | 3V3 | PG6 | 3V3 | Input/Output |
> | Pin 46 | GND | 0V | GND | 0V | |
> | Pin 48 | NFC\_GPIO | Input/Output | NFC\_GPIO | 0V | Input/Output |
> | Pin 50 | GND | 0V | GND | 0V | |

## Cataloging Baseboards

Baseboard ID  
FMU ID  
List differences from the standard original PX4 board

- Different sensor set
- Break it down logically on the document
- we need to break apart the revision from version

standard original PX4 board = full size with all IO implemented based on the reference design

## TODO

Move PAB DS-010 to Gitbook on the main repo. @rroche

## Dail In

Direct link to the meeting:

> **[Jitsi Meet](https://meet.jit.si/pixhawkweekly)**
>
> Join a WebRTC video conference powered by the Jitsi Videobridge

## Meeting Minutes

### Attendees

- 

### Agenda Items

* * *

## Errata and Feedback

Let me know below if I failed to capture anything the right way, and if there are any updates, or you have feedback on the call format.