Hi everyone, I've been working on a project that may be of interest. Tracksoar is a tiny open source APRS tracker designed for anything that flies. APRS uses amateur radio to relay location, altitude, and other data to the internet. Tracksoar is small enough to be flown under most quadcopters and includes sensors for temperature, pressure and humidity. More sensors can also be added such as IMUs and local data storage. Checkout our page at tracksoar.com or back our kickstarter here: https://www.kickstarter.com/projects/1250163085/tracksoar-aprs/dashboard