Custom PCB: Checking if PCB is correct before sending off to manufacture

[JSCBLOG]

Hello,

I have been using the nRF52840 DK board and have designed a PCB based on it. I made a previous post asking some questions before designing the PCB, so this is a follow-up.

https://devzone.nordicsemi.com/f/nordic-q-a/78124/going-from-nrf52840-dk-to-pcb

With the schematic, I haven't changed anything except adding my connections to the pins, and using Generic No ERC markers on the unused pins. The PCB I kept the same and add my components above it, and the battery on the bottom layer. The only changes I made were extending the top layer ground polygon (red), and using the vias around the nRF chip to branch out a ground and VCC line.

1) Is my PCB fine to manufacture or are there any changes I should make to it. My design uses a few GPIO pins, analog pins, and Bluetooth to communicate with. I used configuration 6, from the reference design. 

2) On the schematic there is an optional section with a crystal connected to XL1/XL2. Do I need to have this on my design?

Kind regards,

J

[Martin Sivertsen]

Hello,

Apologies for the late reply.

I'll take a look at this today and get back to you.

Best regards,

Martin S.

[JSCBLOG]

No worries. I actually changed the nRF chip I used in the initial post. I noticed that there is a cheaper and "simpler" one, that I can use, as I only need a few GPIO pins. I ended up using the nRF52810. I haven't used this chip before, so I hope my code will still work with minor changes. I added the screenshots of the new PCB below.

I added the original post below but changed the questions:

With the schematic, I haven't changed anything except adding my connections to the pins, and using Generic No ERC markers on the unused pins. The PCB I kept the same and add my components above it, and the battery on the bottom layer. The only changes I made were extending the top layer ground polygon (red), and using the vias around the nRF chip to branch out the ground and VCC lines.

1) Out of the reference designs for the nRF52810, I picked the nrf52810_caaa_2-layer as opposed to the nrf52810_caaa and nrf52810_caaa_dcdc designs. I'm not sure what advantage the other two have over the one I picked, based on the simplicity of my design. 

2) Will this PCB work or are there any changes I should make?

Kind regards,

J

[Martin Sivertsen]

Hi,

Apologies again for the late reply, i was planning on taking a look at this before the weekend, but my kid got sick.

I'll take a look at it tomorrow and get back to you.

Best regards,

Martin S.