This is excellent!!! I&#x27;ve been wanting to get into embedded hacking, specifically a GPS watch, the polar m400. Thanks for sharing.<p>BTWPart 2 is here for those curious: <a href="http:&#x2F;&#x2F;grangeia.io&#x2F;2015&#x2F;11&#x2F;16&#x2F;hacking-tomtom-runner-pt2&#x2F;" rel="nofollow">http:&#x2F;&#x2F;grangeia.io&#x2F;2015&#x2F;11&#x2F;16&#x2F;hacking-tomtom-runner-pt2&#x2F;</a>