Dennis Field / dvk-mx8m-bsb - History

Make all sheets except the top-level one identical to master, also checkout master's dvk-mx8m-bsb-cache.lib file

Add GNSS antenna footprint including correct 50Ohm feed line dimensions and keepout area, add u-blox MAX-8 3D model, rename all instances of MAX-M8* to MAX-8* due to part selection, antenna feed line calculatos included (coplanar waveguide)

Need to add placeholder footprints for the other four antennae which will be represented as simple rectangular areas where the antennae will occupy. After that, all that is left is to assign the various remaining IC footprints and finally import all footprints into PCBNew & begin layout!

Assign jumper header footprints and component properties, selected based on required current rating and minimized area occupied, assigned 1.5mm diameter test points

new structure of first page in the schematics
more direct connections instead of labels
interconnection of schematic blocks (e.g. USB hub) is made visible
format of page is now A3 instead of A2 -> better font quality when printed on small paper

added company logo and designers email addresses into drawing area
new library with symbol of Emcraft-SOM (for later use)

Add quartz crystal footprints, reassign BHC-18650-1P footprint & associated component properties, add BHC-18650-1P 3D model

Connect VCC of the USB1_VBUS comparitor (TLV3201AIDBVR) to 5V_SOM instead of 5V_P so that VBUS presence can be detected quickly enough for the USB Serial Downloader bootmode, connect the TVS diodes on the HDMI receptacle to the proper pins

Add decoupling/stitching capacitors to the 5V_P, 3V3_P, and 1V8_P rails which will be spread through the respective power planes (not necessarily having to be near chips)

Replace the AP22800 load switch with the P-channel AP22814 load switch IC due to its reverse current & over current protection capability, add level shifter circuit to the WWAN's DPR signal

Reverse current is no longer an issue with the load switches. One more obvious "TODO" for the schematic left which is to simply place several 100nF bypass caps on the 5V_P, 3V3_P, and 1V8_P rails (investigate how EmCraft is placing these in their layout).