Give your RPi-0 ethernet and Power-ver-Ethernet (POE). The hat uses the ENC28J60 chipset from Microchip to provide an 10Base-T 802.3af compatible interface for your RPi over SPI. The board negotiates power from your POE-enabled switch shared between 5V and 3.3V outputs at up to 9 Watts.

Placing a 0603 jumper across J1 pulls the EEPROM WP line high, preventing writes.

J2 can be used to choose a chip select on the SPI bus. By default, CS0 is connected by a trace under one of the jumpers. To change it, cut the trace with a hobby knife and place a 0603 jumper across the right-most pads in the previous picture

For the latest Raspbian image, go to https://www.raspberrypi.org/downloads/raspbian/.

1. run raspi-config
2. select 9 Advanced Options
3. select A6 SPI
4. select yes to enbale SPI
5. select yes to automaticaly load kernel module
6. select <Finish>
7. select yes to reboot

Add the this line to the /boot/congig.txt:

dtoverlay=enc28j60

After this line is added the Raspberry Pi will automatically load the device on boot.

hardware/RPI0E.sch - Eagle CAD schematic for the hat.

hardware/RPI0E.brd - Eagle CAD board for the hat.

hardware/bom.xlsx - Spreadsheet with bill of materials

hardware/datasheets/ - datasheets for the board components, as well as some part drawings.

For information on EEPROM configuration visit https://github.com/raspberrypi/hats .