I noticed this last Fall at the Open Hardware Summit in NYC. That event has become the must-attend event for those involved in open source hardware. (Arduino team members, et al.) The event was founded and chaired by Alicia Gibb and Ayah Bdeir. And the speaker list was way more gender-balanced than your typical SF/SV event. No one was asking "where are the women?" at OHSummit. (But if they did ask, the answer was: "Everywhere! And they're leading the charge!")