Difference between revisions of "PoE Shield"
From Hackstrich
(Status update.) |
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| − | The PoE shield will be compatible software-wise with the official Arduino Ethernet Shield, but also supply power to the board via Power over Ethernet. | + | The PoE shield will be compatible software-wise with the official Arduino Ethernet Shield, but also supply power to the board via 802.3af-2003 compliant Power over Ethernet. |
== Project Status == | == Project Status == | ||
| − | Design, BOM, schematic, and PCB layout complete, PCBs and parts received, revision 1 board assembly is in progress. | + | Design, BOM, schematic, and PCB layout complete, PCBs and parts received, revision 1 board assembly is in progress. Currently stalled due to the wrong PoE transformer in the BOM and missed purchase of the ethernet controller chip. Ethernet chip ordered from SFE 2010-11-21. |
== Notes == | == Notes == | ||
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* Bigger test points (especially for prototypes) | * Bigger test points (especially for prototypes) | ||
* R108 should be 0603 (but is 0402) | * R108 should be 0603 (but is 0402) | ||
| − | * Had wrong PoE transformer. | + | * Had wrong PoE transformer (1x3.3v 1x5v windings instead of 2x12v) |
=== Ideas for Rev. 2 === | === Ideas for Rev. 2 === | ||
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[[Category:Current Projects]] | [[Category:Current Projects]] | ||
| − | [[Category:Status/Waiting for | + | [[Category:Status/Waiting for Parts]] |
Revision as of 12:00, 22 November 2010
The PoE shield will be compatible software-wise with the official Arduino Ethernet Shield, but also supply power to the board via 802.3af-2003 compliant Power over Ethernet.
Project Status
Design, BOM, schematic, and PCB layout complete, PCBs and parts received, revision 1 board assembly is in progress. Currently stalled due to the wrong PoE transformer in the BOM and missed purchase of the ethernet controller chip. Ethernet chip ordered from SFE 2010-11-21.
Notes
Notes from Rev. 1
- Package has silkscreen already, just none on bottom of rev. 1 boards:
For LM5070 library part put a notation for where pin 1 goes. - Fixed in revision 2:
C6 footprint does not match BoM (C6 should be 0603 or footprint to 1210) - D2 has no silkscreen
- Fix footprint on U2 (Pads are too far apart lengthwise)
- Fix footprint for U3 (it's just generally wrong)
- Bigger test points (especially for prototypes)
- R108 should be 0603 (but is 0402)
- Had wrong PoE transformer (1x3.3v 1x5v windings instead of 2x12v)
Ideas for Rev. 2
- Could switch the main transformer to a POE13W3VERS-R (1.8/3.3/7V) or 7491192912 (3.3/5/12V) to avoid the need for secondary regulation all together
