Posts made by Matthias Nowak

Hey,

Just a quick question: has anyone tried how many concurrent AP Client connections the Omega2 can handle?

Thanks!

Matthias

@Flemming-Richter i dont have the time right now to work on them and also forgot about them because i got a different project running too. but i will probably check back this summer, so it will take time

Any way we can get it to work with other printers too? or maybe compile cups for the omega?

@Zheng-Han said in Octoprint (3D print server) on Omega2+:

1. expand /tmp folder on the Omega

mkider /overlay/tmp
rm -rf /overlay/tmp/*
cp -a /tmp/* /overlay/tmp/
umount /tmp
[ $? -ne 0 ] && {
umount -l /tmp
}

i think you meant

mkdir /overlay/tmp

could it be?

@WayneL i gotta revisit the schematic n everything when i have time this weekend, ive waited for my onion to arrive first so i can make sure they wont change anything in the pinout etc. AAA batteries would be obscolete when the dock has LiPo connectors and a charger on it, i would rather see the AAA as e-waste compared to lithium cells.

And adding video-output is a rather special thing and out of scope for this project, im sorry. It would add a ton of software to be made or ported over from other SoC's and i dont think there is a huge interest in it.

My two cents

@ccs-hello

Hey, havent been here for a few days and received my onions latery.

Yeah, it really isnt connected, so im really wondering what theyre doing (still waiting for their schematic).
But ive noticed that the LinkIt Smart 7688 also doesnt need a center tap voltage.
And as you said, the Datasheet also doesnt give any indication.
Makes you really wonder why, but seems like it works

I wouldnt want to use anything that has to do with health care that runs linux, because stuff from the background can interrupt it.

you really should look into Microcontrollers, not microprocessors for such kind of task. Maaaaannnyyy Low power bluetooth devices run the nrf51822, and you also should take a look at it (maybe pair up with an electronics engineer student?)

And no, its definatly not compact enough to be worn on a wrist, let alone the battery you would need to have to run it for half a day or so

Soooo, just to update stuff:

Didnt worked on it bcs its still not known if the pinout has changed now or not, messaged them on KS though

@Kit-Bishop (note: reffering to the omega1 schematics on github)yeah i was already worried about the 2.5v thing. Because that is used for the reset button, thus they have to change this if they want to keep the compability. Pin numbers could possibly be changed in firmware. For the last part: they have to use a different Voltage there. Its purpose is only to be there for ethernet power, so i dont think that people used that one for anything else before because it probably cant drive a big current. Plus they have to change that atleast for Ethernet to get working so i would pass that change

@Kit-Bishop well i think that function differences arent a major problem. But as said earlier, we will get an updated pinout with the next kickstarter update because ive messaged them already about the differences. So lets better wait until we get the new information.

@Kit-Bishop ok got to correct me on something: the reset button uses the FW RST Pin, and that one isnt broken out, but the normal RST Pin is.

So a list of pins not broken out:

• FW RST
• IO 15
• IO 16
• IO 17

so in theory, you loose 3 IOs. They could have broken them out if they had removed like one GND Pinout and one 5V/3.3V.

@Kit-Bishop hmmm...i would rather wait because there will be some changes made in the omega2 pinout mainly because the new and old one differ too much to be compatible. Guess then we should look again at it. Im currently not home so i cant really look at the schematic again. I will report back later today in regards to the pinout of atleast the original omega.

But yeah: before doing more things around the pinout in the campaign we should wait for the next Update

@Kit-Bishop i think the expansion dock breaks every out except the normal reset pin. Maybe look at my custom dock im Working on? 5x5cm. Nearly all pins broken out. Usb to Serial on baord, lipo or passive poe

It doesnt have a Video Output and i dont even know if the chip has a gpu.

Edit: went through the datasheet and no, it does not have a GPU, so having a desktop or even a Command line diaplayed on a screen wont be possible really. You would be better of with a pi zero

If you use it without a dock you will need a usb-to-serial adapter to program it. Or with a dock which has this chip built in you will only need a usb cable

While we're at changing things,: i will maybr consider changing the lipo charger to something that can deliver a bit more current. 500mah seems a bit low for me. Like 1A would be more than enough.

@None-None nice. i will take a look at the whole circuitry when im back from holidays in 4-5 days!
But my first guess would be that (although i havent looked into its circuitry) that the protection circuit also discharges the battery? because normally you want them to be at ~70% of their load when storing them

@Calavero-. ok, im blind 1h sleep isnt enough lol thanks again.

@Calavero-. thanks for pointing all that out, dont know what i thought about those extra resistors on the poweron-rail.
and also didnt noticed the wrong values on the 3v regulator. changed the values to fit the datasheed (150K and 680K) although C6 is alright.

got some time this weekend to recheck everything.

Corrected, thanks again

@Calavero-. Got to wait now. I heard that they changed something in the pinout and yeah. Gotta wait until they update it.