Best posts made by JeffZhou

@matiaslao said in Omega2S+ Crystal information:

The project team is keen on getting to know the the crystal frequency stability/tolerance. Any information is much appreciated.
Best regards,

Hi Matias,below is the electrical characteristics of the crystal .

@akif-durmaz Hi ，what i mean is you can try to use another ethernet connector.

Hi，Omega2S+ need to add an extend wifi antenna.you can use ipex connector to connect an extend wifi antenn or use the ANT PIN to connect a pcb wifi antenn.

@Malcon4 here is the ethernet port that Omega2 using .

@akif-durmaz
Hi, i had checked the Normal ethernet connector（RJ45），it seems that the inside schematic isn't as the same as yours. Here the connector's sch has the same channel coil of RX/TX.SPEC of HR913550A

@akif-durmaz Hi ,please add a screenshot of the ethernet connector and transformer 's schematic.

The lastest Omega2S reference schematic had deleted the R401~R406，C403 and C404.

@akif-durmaz Hi ,For the Omega2S reference schematic ,there are two options for the ethernet connection,option1 is using ethernet transformer ,option2 is a simpler circuit which using resistor and capacitor to instead the transformer . and each of the option can work.
I had checked your ethernet port circuitry screenshot, there are some connection is not right, you can't connect the omega2S's ethernet signal line to the ethernet port.

@liamski Hi, if your prototype used the Omega2S+ or Omega2+ Module? And is there any circuit change around the Omega2S+?

Hi, if you don't need to use Micro SD Card .

1. As Onion Firmware's SD Card funtion will be actived when SD_CD PIN at High-level.When you keep using Onion Firmware,you can use pulldown resistor to set the SD_CD PIN to low-level.
2. You can set each SD Card PIN to GPIO Mode.

Great ！