(Very Important) "If you don't have adequate sensors, you might have trouble during hackathon. "
(notice) Wifi module to FRDM K16F : http://wiki.seeed.cc/Grove-
http://www.icbanq.com/P006161478
We contacted Seeed HQ, but they will start to manufacture 30th Nov. 2017. So, we cannot provide this parts. Sorry for that.
From this time on, you have to take care of "sensors".
It is very important to check working well and it takes time to buy it.
(1) Please check Arm components list https://os.mbed.com/components/
(2) If it is not available then using Arm bulletin board (https://os.mbed.com/teams/Seoul-IoT-Hackathon/) to ask question about it to find adequate sensors.
If you can't access it, then, you might not sending NDA documents to Arm Staff. http://english.seoulhackathon.org/93