CircuitMaker - The right way to design Castellated Modules like Particle photon or ESP32 - process can be used with any decent PCB CAD tool including Upverter as well: https://circuitmaker.com/blog/how-to-design-bob-board-on-board-modules | Facebook
![Free PCB Design Tool – CircuitMaker powered by Altium @altium « Adafruit Industries – Makers, hackers, artists, designers and engineers! Free PCB Design Tool – CircuitMaker powered by Altium @altium « Adafruit Industries – Makers, hackers, artists, designers and engineers!](https://cdn-blog.adafruit.com/uploads/2014/09/slide-5-scheme.jpg)
Free PCB Design Tool – CircuitMaker powered by Altium @altium « Adafruit Industries – Makers, hackers, artists, designers and engineers!
![From CircuitMaker Software to Same-Day Othermill Prototype | #ManufacturingMonday with @CircuitMaker @othermachine « Adafruit Industries – Makers, hackers, artists, designers and engineers! From CircuitMaker Software to Same-Day Othermill Prototype | #ManufacturingMonday with @CircuitMaker @othermachine « Adafruit Industries – Makers, hackers, artists, designers and engineers!](https://cdn-blog.adafruit.com/uploads/2016/05/2016-04-11-11_30_45-CircuitMaker-1.2-GPRegulator.CMPcbDoc-_-General-Purpose-Regulator.PrjPcb-B.png)