i am developing a picorouter for the onion omega
The target is to have enough functionatlity to act similar as a wr703n, but in a smaller form factor while still being easy to hack.
Image of board R03:
onion omega pinheaders
46x47mm (was: 46*49mm on R2-01 and before) (surface: roughly 21 square cm)
ethernet port (with built in transformers) x1
usb port x1 (moved inwards for a micro usb stick without sticking it out too much (prevents damage ))
3.3v ldo (st1117 3.3v fixed regulator)
usb power in
power leds on the ethernet jack
GPIO: 6 on a header (with 3.3V and GND lines)
rx/tx available as well
pcb checking and such
current version: R03
reset-able 500mA fuse on USB +VIN line
increased input capacitor from 10u to 22u
changed LED 13 to GPIO13 instead of +3V
both led resistors to 56ohm instead of 220ohm (increases led brightness)
small routing imporvements
fixed the ethernet shielding and added required voltage lines for the transformers in the ethernet jack
slightly smaller in height
R02-1 has no additional features, except that the overlapping rx-tx signals are fixed.
download links below:
if you want to order board R02-2 right away (about $17 for 3 pcb's) :
0: check if there are manufacturing errors with a mulitmeter!
1: solder all components on their place, beginning with the smt ones (ldo, usb mini, caps)
2: solder connectors and (pin)headers
3: check if there are soldering errors with a mulitmeter!
4: plug in the onion omega
5: optional: plug in microusb stick (or other desired usb device) and/or ethernet cable
6: make sure there's no shortings again (with multimeter)!
7: power up
8: if the green led on the ethernet jack lights up you've done it right.
9: ??? ??? ???
Want to help?
You can help realizing this project on multile ways, by:
- hardware testing
- case design
- hardware addon design
- pcb designing
- pcb checking
- perhaps your own idea to support this project?
hardware design: ramon schepers
the omega: onion.io
you may sell it as your own, use it as your own, but the only thing you need to know is: all responsibility is up to YOU if you do something with it.
Hi @ramon-schepers, please see the attached for the dimensions of the Omega. All units are in mm.
thanks, this is exactly what i was looking for, not i can correct my design as post it
and so, i got a christmas present for you all, namely: the zipped project!
contains: .brd and .sch file
yes, i made a schematic as well
current revision: R01
use at own risk though!
Can dig up and old copy of designworks but before I do what can I view your schematic and board drawing with application wise.
the download link is in my post above, feel free to use and modify to your likings.
new version R02
added ground nets
fixed some spacing issues
see top post
Would a single stack Ethernet RJ-45 and USB in one help reduce the footprint? or possibly open up the ability to have mirror dual connectors? (are there enough IO ports to support those for a router?)
Part # is 0821-1X1T-36-F I tried finding the one on digikey, but keep getting errors...so found this site
http://www.sager.com/0821-1x1t-36-f-2759021.html and mouser http://www.mouser.com/ProductDetail/Bel-Fuse/08B1-1X1T-36-F/?qs=sGAEpiMZZMvQhAhQbXdbBq6dyKBMKn3ykoTj20eH7j4%3D , the datasheet is here http://belfuse.com/pdfs/0821-1X1T-36-F.pdf
That's an option, though I don't want the picorouter to be too high in size.
Plus, I designed the USB port a bit inward so it could fit a micro USB stick (for storage expansion) without growing too much in dimensions.
You are free to modify the design though
edit: changed some stuff and new pcb version is up, see the top post
@ramon-schepers Ever seen a VoCore...they use a vertical USB A female port that is the exact same size as the RJ-45 port...might help you shave a little more off the side
You get the idea
yeah, i know the vocore, but never though of implementing the same usb port, silly me
though right now it isn't on my priority list, i want to make sure everything is correct on the pcb design
feel free to change it though
@ramon-schepers ok...put on a vertical USB...but no real bonus on space...so your design is pretty darn spot on...nothing I could do except put in the vertical USB move a bit around and maybe a few cosmetic tweaks
here is what I did (even got the OSHPark renders but deleted the project since it's your intellectual property)
Hi Ramon, I'd really like to tinker around with your board, it looks great.
Am I missing something though? Where do I find the component list?
Do you made the onion as part for eagle byself? If yes, can you share it?
Or can I find the lib for eagle somewhere? If yes, where?
I want to use for my own board.