Make an internet connected t-shirt with LEDs that respond to realtime data In summary: We will make a wearable, flexible LED array which will change colour in realtime as users draw on an app. It uses the Ably MQTT broker and the Ably Javascript SDK along with addressible RGB LEDs and an Adafruit wifi enabled microprocessor. We change the colour of individual LEDs sewn on the t-shirt, by sending realtime updates data with Ably's messaging platform to an Arduino via MQTT.