{"action":"opened","issue":{"url":"https://api.github.com/repos/manuel-rabade/sismo_alerta/issues/2","labels_url":"https://api.github.com/repos/manuel-rabade/sismo_alerta/issues/2/labels{/name}","comments_url":"https://api.github.com/repos/manuel-rabade/sismo_alerta/issues/2/comments","events_url":"https://api.github.com/repos/manuel-rabade/sismo_alerta/issues/2/events","html_url":"https://github.com/manuel-rabade/sismo_alerta/issues/2","id":103143201,"number":2,"title":"Cambiar el voltaje del sistema de 3.3V a 5V","user":{"login":"manuel-rabade","id":353335,"avatar_url":"https://avatars.githubusercontent.com/u/353335?v=3","gravatar_id":"","url":"https://api.github.com/users/manuel-rabade","html_url":"https://github.com/manuel-rabade","followers_url":"https://api.github.com/users/manuel-rabade/followers","following_url":"https://api.github.com/users/manuel-rabade/following{/other_user}","gists_url":"https://api.github.com/users/manuel-rabade/gists{/gist_id}","starred_url":"https://api.github.com/users/manuel-rabade/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/manuel-rabade/subscriptions","organizations_url":"https://api.github.com/users/manuel-rabade/orgs","repos_url":"https://api.github.com/users/manuel-rabade/repos","events_url":"https://api.github.com/users/manuel-rabade/events{/privacy}","received_events_url":"https://api.github.com/users/manuel-rabade/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/manuel-rabade/sismo_alerta/labels/bug","name":"bug","color":"fc2929"},{"url":"https://api.github.com/repos/manuel-rabade/sismo_alerta/labels/enhancement","name":"enhancement","color":"84b6eb"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-08-26T00:17:00Z","updated_at":"2015-08-26T00:17:00Z","closed_at":null,"body":"Algunas Si4707 Weather Band Receiver Breakout (https://www.sparkfun.com/products/11129) no pueden establecer comunicación con el Arduino Pro Mini. Se necesita:\r\n\r\n- Configurar Power Cell a 5V\r\n- Agregar un regulador de voltaje de 3.3V para alimentar la Si4707 Breakout\r\n- Ajustar conexiones de alimentación USB - PowerCell - Arduino Pro Mini - Si4707 Breakout\r\n- Ajustar detección de energía externa en el firmware\r\n\r\nLa razón es que la Si47407 Breakout requiere alimentación de 3.3V pero esta diseñada para comunicarse a 5V (tienen un divisor de voltaje en SCLK y SDIO, ver https://cdn.sparkfun.com/datasheets/Wireless/General/SparkFun_Si4707_Breakout_v11.pdf).\r\n\r\nUna solución temporal a este problema es eliminar los divisores de voltaje en SCLK y SDIO de la Si4707 Breakout (Quitar R3, R4, R5 y R6 y soldar jumpers en R3 y R4)."}}