WISP5 hardware design files are open source! Download now at github.com/wisp/wisp5-hw
The WISP5 schematic and PCB was developed using the industry standard Altium Designer software suite.
If you're building your own WISPs, or if it's not provided in your WISP kit, you'll also need to obtain or fabricate a programming adapter board: WISP Programmer Files
WISP5-LRG Detail/pinout diagramswisp5-pinout.pdf