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ramon schepers

@Paul-Wright i'd suggest a catogory for hardware as well

ramon schepers

to put it simple: no.

ramon schepers

i saw those articles, which made me wonder about the 16mb onboard flash

also, just thinking of something else with the omega, namely a all in one adapter board, with:
arduino-style header adapter with the needed level shifters, power, ethernet, microsd and analog potmeters using an attiny for analog to serial reads.

please tell me your opinion on this.

ramon schepers

Intro

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:

Specs

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

Todo

case design(?)
pcb checking and such

Changelog:

current version: R03

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

R02-2:
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.

Files/downloads

download links below:

picorouter_v3.zip

picorouter_v2-2.zip

if you want to order board R02-2 right away (about $17 for 3 pcb's) :
https://oshpark.com/shared_projects/FGrlPzE9

Assembling

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: ??? ??? ???
10: profit

Want to help?

You can help realizing this project on multile ways, by:

suggestions
ideas
hardware testing
case design
hardware addon design
pcb designing
pcb checking
perhaps your own idea to support this project?

Credits

hardware design: ramon schepers
the omega: onion.io

Licence

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.

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