{"action":"closed","issue":{"url":"https://api.github.com/repos/3drobotics/solodevguide/issues/252","repository_url":"https://api.github.com/repos/3drobotics/solodevguide","labels_url":"https://api.github.com/repos/3drobotics/solodevguide/issues/252/labels{/name}","comments_url":"https://api.github.com/repos/3drobotics/solodevguide/issues/252/comments","events_url":"https://api.github.com/repos/3drobotics/solodevguide/issues/252/events","html_url":"https://github.com/3drobotics/solodevguide/issues/252","id":125290761,"number":252,"title":"Architectural diagram clarifications and updates","user":{"login":"hamishwillee","id":5368500,"avatar_url":"https://avatars.githubusercontent.com/u/5368500?v=3","gravatar_id":"","url":"https://api.github.com/users/hamishwillee","html_url":"https://github.com/hamishwillee","followers_url":"https://api.github.com/users/hamishwillee/followers","following_url":"https://api.github.com/users/hamishwillee/following{/other_user}","gists_url":"https://api.github.com/users/hamishwillee/gists{/gist_id}","starred_url":"https://api.github.com/users/hamishwillee/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hamishwillee/subscriptions","organizations_url":"https://api.github.com/users/hamishwillee/orgs","repos_url":"https://api.github.com/users/hamishwillee/repos","events_url":"https://api.github.com/users/hamishwillee/events{/privacy}","received_events_url":"https://api.github.com/users/hamishwillee/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/3drobotics/solodevguide/labels/enhancement","name":"enhancement","color":"bfe5bf"},{"url":"https://api.github.com/repos/3drobotics/solodevguide/labels/question","name":"question","color":"cc317c"}],"state":"closed","locked":false,"assignee":{"login":"hamishwillee","id":5368500,"avatar_url":"https://avatars.githubusercontent.com/u/5368500?v=3","gravatar_id":"","url":"https://api.github.com/users/hamishwillee","html_url":"https://github.com/hamishwillee","followers_url":"https://api.github.com/users/hamishwillee/followers","following_url":"https://api.github.com/users/hamishwillee/following{/other_user}","gists_url":"https://api.github.com/users/hamishwillee/gists{/gist_id}","starred_url":"https://api.github.com/users/hamishwillee/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hamishwillee/subscriptions","organizations_url":"https://api.github.com/users/hamishwillee/orgs","repos_url":"https://api.github.com/users/hamishwillee/repos","events_url":"https://api.github.com/users/hamishwillee/events{/privacy}","received_events_url":"https://api.github.com/users/hamishwillee/received_events","type":"User","site_admin":false},"milestone":null,"comments":8,"created_at":"2016-01-06T23:52:29Z","updated_at":"2016-02-10T22:08:55Z","closed_at":"2016-02-10T22:08:55Z","body":"The diagram in the  [Architectural Overview](http://dev.3dr.com/concept-architecture.html) is incomplete (missing Accessory bay) and also in some cases a little confusing. We should tidy it. Would appreciate answers to the following questions. \r\n\r\nRough update (for discussion only) below. New lines shown in red, new box in blue. \r\n\r\n![image](https://cloud.githubusercontent.com/assets/5368500/12158254/7afda8d4-b52c-11e5-94da-657ac810d15c.png)\r\n\r\n\r\n1. Where is the original source for this diagram (I can reproduce existing version if needed, but would be faster if we had original)\r\n2. What do the direction of the arrows mean? I am assuming they mean \"direction of messages\"? So the HDMI arrow from gopro indicates that images are sent from gopro to companion computer?\r\n   - Are all the other arrows correct? \r\n     - Is LED really sending messages to Pixhawk?\r\n     - I think  Pixhawk to Gimbal is only one way - we use this to send commands to control gimbal angle and take pics. Correct?\r\n     - I've drawn Pixhawk to GoPro as 2 way, because I think this also controls settings.\r\n     - USB between Pix2 and Companion computer is shown as one way - That looks wrong ???\r\n     - USB companion computer to accessory bay is 2 way too right?\r\n3. Are there any lines \"not available to developers\" (I could show these dotted). For example, I believe that the USB2 line between the Gopro and SoloLink is not available to developers. Correct? Any more?\r\n4. What is the \"Pair\" about?\r\n5. Accessory bay. Please check my new box. Are the directions of the arrows OK? Are there any missing lines?\r\n6. Battery bay. Is this correct - just a box with I2C line pointing from battery to pixhawk? Anything else useful to add here?\r\n7. Are there any links for information about the debug links - ie what connectors to use. The setup? The protocol? Is this somehow based on [this wiki topic](http://dev.ardupilot.com/wiki/interfacing-with-pixhawk-using-the-nsh/)?\r\n\r\nAre there any other components that should be on the diagram?\r\n\r\n\r\n\r\n"}}