Check out https://github.com/Crazepony https://github.com/Crazepony. From a brief look, you'd need to write C to change the firmware, but you can write a client

Check out https://github.com/Crazepony https://github.com/Crazepony. From a brief look, you'd need to write C to change the firmware, but you can write a client in any language and connect via bluetooth (https://github.com/Crazepony/crazepony-android-client-none/blob/master/app/src/main/java/com/test/Crazepony/BTClient.java https://github.com/Crazepony/crazepony-android-client-none/b...).