VOXL 2 Custom Expansion PCB

If you are comfortable designing and manufacturing custom PCBAs, an example add-on board for VOXL 2 with reference Altium schematic package can be downloaded here

For those without Altium, if you cannot get an online conversion or the 30-day trial period to work for you, here is another zip file of the generated outputs (SCH, BOM, 3D Step, ODB++, and an ASSY drawing with all relevant dimensions): Altium Generated Outputs