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Bot using NodeJS and the HTML5 Audio API
Submitted by Ameya Karve (@ameyakarve) on Sunday, 4 August 2013
To build a robot that is controlled using a NodeJS server. The bot uses the HTML5 Audio API to actuate it's motors. It can be run using any mobile device that can connect to the internet, and has a web browser and an audio port.
This is a modification of one of my earlier hacks. The idea is to control a robot using the sound output from a mobile device. The sound output is controlled through a web page on the mobile device browser, that talks to a NodeJS server. The communication can be realtime when supported by the device using a WebSocket connection; I have also written a long-polling fallback mechanism. I have tested the hack using an LG P500, a Nexus 4 as well as an iPhone 4; It should seamlessly work with other devices otherwise.
The hack does not require a circuit board like an Arduino or a Raspberry Pi device; I can share the circuit details, as well as places where the components could be procured in Bangalore or Chennai.
Knowledge of NodeJS and Socket.IO