Which parts are just round connectors? I would also purchase the usb-a and usb-c. I looked on tht list, haven’t been able to find any of round connectors from LCSC. Hopefully I can log into those site today.
Have a look at the links, please. Honestly speaking, I’ve no idea, where you can buy in the US best. But these connectors are widely used in industry (AB/Rockwell, Siemens, …)
BR
Gorm
Thanks for the help. I have found some on google. I’m in USA. I was just worried I would buy some with the wrong footprint. If I keep the 4 and 5 poles straight, will it most likely fit in that configuration to your board?
I am used to these connectors I have used on many projects. Very good and robust design. I just have never ordered or soldered to board. is there a standard for this base for pcbs?
Here are some visuals I get to see once ordered and a ‘DFM analysis’ which is not so comforting, however we can check visually now the original and corrected version.
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congrats! you’re the first to get such pictures! and thx for sharing! 
Thank you. If I"ll have a questions, can I ask you for help.
In their analysis, they corrected and rotated Q8 90° to the left.
For X1 it looks like there is indeed no space?
The other ones look fine to me just based on the visual. Proof is in your received PCB?
Does JLCPCB offer a “share project” link?
Don’t think so, I can’t find one.
it is, all crystals were ok. Q8 corrected, thx!
I don’t get the logic of the USB things 
. I almost understand it with these documents:
Connections.pdf
Schematic_Central Unit for AgOpenGPS.pdf
The option of an inside/outside receiver is chosen by removing some parts, so by modifying the parts list before assembly?
What are the options to connect a receiver board inside the box? Is this only by micro-USB on receiver side to the dual USB-A aux on the autosteer board side?
Or can we connect 5V/GND/TX/RX to these holes that are meant for another USB-A port and let U19 on?
I see CMPS14 printed on the board, is this to be connected with the optional Qwic connector?
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Using 5V/GND/TX/RX is an excellent idea! Why did I forget to put a Pixhawk connector onboard?? 
I would think that connecting the “left row” of the XBEE connector (so 3V3,GND,Tx,Rx) to U16 (Bynav socket; both 2mm pitch) would be the best option, because the internal switch-mode power supply for 3V3 is used for best power efficiency. Have to test that. When using the 2.54mm pins, don’t forget to connect IOREF to the supply.
The Pixhawk connector option is added now.
U15 is the socket for the CMPS14 - no need to use the QWIIC.
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Would we be able to connect to your rooftop ‘dual-RTK’ PCB in that way too?
So I guess I can find a workaround and avoid physical USB-connectors with my ordered board, just have to study the schematic more into detail.
In general I like the idea of a ‘universal’ board that you can use in all situations. I see the WAS M8 connector is either 3 or 4 pole depending on using a new sensor or using a built-in sensor in differential mode. That makes the box not switchable between tractors without desoldering.
I understand this is probably because of physical limitations, it’s already unbelievable you can gather so many functions in such a small area of PCB…
For the rooftop unit, you have to options for dual-RTK: one is using the GNSS-shop boards with direct soldering (very small setup - fits into the suggested box) or two Ardusimple via Pixhawk. Already done.
The configuration of single-ended or differential ADC input is done in Brian’s PC software - so you can do that on-the-fly.
Hope, all the functions are not too confusing for beginners… 
I mean the connection between the two PCB’s: central unit and rooftop. This is serial by means of the M12 connector if outside the central unit box. I thought I read somewhere there was the option to mount it inside the box, can it be connected inside too?
I made a public list on Reichelt of the links you put in the BOM_THT. I can’t find the 3-pole version of the WAS M8-connector.
https://www.reichelt.de/my/1816987
If for example you decide to ditch the OEM wheel angle sensor for whatever reason, you have to desolder the 4-pole M8 connector and replace by a 3-pole so you can connect a custom sensor. Or am I misinterpreting.
There is only space for one Ardusimple inside the aluminum housing shown in the link, but in general, you can stack two and the rooftop PCB with Matthias` software. The holes for the rooftop PCB are next to R24 and R5, but this would block the PushIn connectors (if you’ve chosen that opion), so it might be better to use double-coated,acrylic foam tape and stick it on top of the 2nd Ardusimple. Connection would be either USB or just 5V + Wifi.
Thanks for the link.
Yes, for any reason, Reichelt doesn’t sell the 3pole M8. Assembled the 4pole for me and left one wire unused, too.
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Just saw this email this morning. What did I do wrong? Uploaded gerber zip under production and pick and place.
I got that email too and paid. They recognise the two USB-C chunks of PCB on the right side as separate PCB’s. You had this too @GoRoNb ?
no! I didn’t spend any extra fee; it’s one board, please insist on that!