# Skynode Rev 11 (Jan 2022)

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Customers of the Skynode reference design get notified of upcoming changes while the changes are in beta phase, to allow for more timely adoption. A more detailed technical description of the change implementation is provided to those customers as well. In case you are interested in this service, please contact <success@auterion.com>
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## Affected Assemblies

<table><thead><tr><th width="191.97175750505443">Part number</th><th width="176.11546187497797">Old rev</th><th width="150">New rev</th><th>Item</th></tr></thead><tbody><tr><td>A000002<br>900-00005<br>900-00018</td><td>09</td><td>11</td><td>Skynode Enterprise (NA/EMEA/no-LTE)</td></tr><tr><td>900-00008<br>900-00009</td><td>09</td><td>11</td><td>Skynode OEM (NA/EMEA)</td></tr><tr><td>900-00011<br>900-00012</td><td>09</td><td>11</td><td>Skynode Government (NA/no-LTE)</td></tr><tr><td>A000036</td><td>05</td><td>06</td><td><a href="../../hardware-integration/skynode/peripherals/adapter-boards">Pixhawk adapter board</a></td></tr><tr><td>A000037</td><td>03</td><td>04</td><td><a href="../../hardware-integration/skynode/peripherals/pixhawk-payload-bus">PIxhawk Payload Bus breakout board</a></td></tr></tbody></table>

## Changes

* MIPI and PPB flat-ribbon connectors have been exchanged with a pin-compatible less fragile part
* Removed CAN bus termination on Skynode. Now Skynode adheres to the CAN standard, where the user is required to terminate the lines at the end of the bus
* New implementation of RTC circuit, increasing shelf-life to approximately a decade
* PPS signal added to the GPS1. On Skynode, it is brought out on J4-17. [Pixhawk Adapter Board A000036-06 ](https://docs.auterion.com/hardware-integration/skynode/peripherals/adapter-boards)changed accordingly: GPS connector size increased to 11 positions, PPS is on pin 6
* Added latching circuit to keep the ethernet switch powered in case of a power failure on the SOM
* RC input now supports PPM
* Current limit for SOM was tightened to 1.5A
* Added ESD protection on USB-C
* USB-C handshaking with MacBooks works more reliably now
* Revision of base board was incremented; now the EEPROM will contain the board rev
* Removed the unconnected CS2 and DRDy2 from SPI connector on FC IO Secondary breakout board, shrunk SPI connector to 9 pin
* Minor ESD hardening measures
* Minor internal component replacements to achieve extended temperature range and adapt to component availability

## Compatibility

The evaluation kit will be updated in sync, a new GPS module with PPS support will be included as well as the according breakout boards.

A000036-**05** (Pixhawk Adapter Board) and A000037-**03** (Pixhawk Payload Bus breakout board) can be used with the Skynode revision 11, but the CAN bus needs to be terminated externally.

A000036-**06** (Pixhawk Adapter Board) and A000037-**04** (Pixhawk Payload Bus breakout board) should not be used with the Skynode revision 09.

To use the [Freefly RTK GPS](https://docs.auterion.com/hardware-integration/skynode/peripherals/freefly-rtk-gps) with [A000036](https://docs.auterion.com/hardware-integration/skynode/peripherals/adapter-boards)-**06** (Pixhawk Adapter Board), a custom cable will need to be made to fit the new pinout of the GPS1 connector.

## Timing

Skynode revision 11 starts shipping in January 2022.

## Software

This revision is only compatible with AuterionOS 2.4.2 and later