May not have anything to do with your problem but I noticed this:
unsigned char command; but later you only set the first command byte:
command = 0xe3;
Just thought I would point it out in case it helps.
Typically these types of regulators work okay without any caps at all. I've never had any issues with LM7805s etc. The Cin cap is only required if the input is far from the power supply filter. Since the input to the LD1117 is likely to be another regulated output this is redundant. The Cout cap will improve ripple rejection and stability. Note that in the LD1117 datasheet 1st paragraph it says only Cout is needed to improve stability.
But I've never used this particular regulator before and so it sounds like good advice to use a large Cout because of the Wifi power draw.
Surprisingly stacking headers are hard to come by from national stocking distributors. I just checked digikey and mouser and couldn't find anything. I've looked before and I get the impression they are not big stock items.
For Arduino I've always purchased my stacking headers from specialty suppliers. The thing is they are cheaper there than what I would expect to pay from digikey etc. So probably they are getting their stock directly from China via Aliexpress
Oh I just realized something. The original Raspberry Pi header is 2x13. Should be lots of those collecting dust. Looking at the expansion dock header pinout it seems that you could center a 2x13 header and still get access to everything you need. Not sure how far that will take you though.
I meant my senior's moment comment might be rude to seniors considering how bonehead my mistake was. Tah.
Thanks. BTW I deserve a boot to the head. I just figured that out before you posted. I did read the manual quite a few times but I don't know what happened. Well I just turned 50 recently so I guess it qualifies as an early seniors moment. Maybe that's being rude to seniors. Frack me
I verified that the mac address printed on the Omega2+ is the same as whats actually being used by the wifi chip. So I can only assume the password should be the same. Also, I've changed the power supply to one I use for an RPi3 just in case.
Just got my shipment and the the wifi passwords on the first two Omega2+ I tried did not work. So I can't even get to the setup wizard. This sucks. Any suggestions?
I've attached a screen shot of what I am typing into the wifi password dialogue box just in case...