nrf52840 pi hat

[sentinel_infinitus]

hi all

i have been working on a raspberry pi hat design and i would like feedback on it's design

this is the link to the github repo and i do update it regularly  https://github.com/sentinelinfinitus/nrf52840-pi-sheild

fair warning i used kicad and for some parts were added using mousers library loader

if you see some things i am doing wrong or have any suggestions on how to do some things better please let me know

[sentinel_infinitus]

I plan on redoing part of it anyway but at the moment I can't my pc has been disconnected for the moment and I have ordered a few upgrade parts that have shipped today

[Andreas]

Hi,

 

OK no problem, I can look over it once you have redone it. As mentioned though you should replicate the reference layout as closely as possible. There is no need to reinvent the wheel, you will just risk inventing new bugs or ways to degrade the RF power.

 

You can find the reference layout here: https://www.nordicsemi.com/Products/Low-power-short-range-wireless/nRF52840

 

Best regards,

Andreas

[sentinel_infinitus]

well i started to impliment the new documentaion and i have learned the part i am using does not have all the pins on it so it looks like i will have to learn how to make custom parts for kicad

[Andreas]

Hi,

 

Unfortunately we do not have any experience with KiCad. I did a quick web search though, seems you should be able to find some nRF52840 libraries which you might be able to use (if this is not what you have done already).

 

Best regards,

Andreas

[sentinel_infinitus]

hi Andreas

unfortunately i was using library's that i found online but they were missing pads on the footprint/schematic

that being said i have taken the time to learn how to make parts and have created the part to the best of my ability (it came out as good as i thought it would)

if you want to take a look at the part in the editor the same library adding instructions i had before should work as long as you use the location of the part i created

the part is in the parts folder under the folder [sentinel]

here is what i have though

here is what the footprint looks like

this is the settings for the red pads

this is the clearances of the red pads

the yellow pad settings (please note they are through hole because that was the only way i could get them go to other layers)

yellow pad clearance

3d

i know it does not follow the aqf73 guideline too well but it was the best i could do based on my limited experience with making kicad parts

it would be nice if in the future nordic made kicad parts available in the future or if nordic want to make this part available to people i would not mind