{"action":"opened","issue":{"url":"https://api.github.com/repos/arduino/ArduinoCore-samd/issues/34","labels_url":"https://api.github.com/repos/arduino/ArduinoCore-samd/issues/34/labels{/name}","comments_url":"https://api.github.com/repos/arduino/ArduinoCore-samd/issues/34/comments","events_url":"https://api.github.com/repos/arduino/ArduinoCore-samd/issues/34/events","html_url":"https://github.com/arduino/ArduinoCore-samd/issues/34","id":105084147,"number":34,"title":"analog write frequency too high","user":{"login":"Makeblock-official","id":5137367,"avatar_url":"https://avatars.githubusercontent.com/u/5137367?v=3","gravatar_id":"","url":"https://api.github.com/users/Makeblock-official","html_url":"https://github.com/Makeblock-official","followers_url":"https://api.github.com/users/Makeblock-official/followers","following_url":"https://api.github.com/users/Makeblock-official/following{/other_user}","gists_url":"https://api.github.com/users/Makeblock-official/gists{/gist_id}","starred_url":"https://api.github.com/users/Makeblock-official/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Makeblock-official/subscriptions","organizations_url":"https://api.github.com/users/Makeblock-official/orgs","repos_url":"https://api.github.com/users/Makeblock-official/repos","events_url":"https://api.github.com/users/Makeblock-official/events{/privacy}","received_events_url":"https://api.github.com/users/Makeblock-official/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-09-06T10:24:17Z","updated_at":"2015-09-06T10:24:17Z","closed_at":null,"body":"the analogWrite output pwm frequency(48M/256 = 187.5k) is too high for most h-bridge based motor drive, for example TB6612, which may cause the chip over heat. A reasonable driving frequency is around 20k for most motors."}}