{"action":"created","issue":{"url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1","repository_url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0","labels_url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1/labels{/name}","comments_url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1/comments","events_url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1/events","html_url":"https://github.com/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1","id":167236681,"number":1,"title":"dcf77 - analyzer - clock","user":{"login":"adebruijn","id":20625661,"avatar_url":"https://avatars.githubusercontent.com/u/20625661?v=3","gravatar_id":"","url":"https://api.github.com/users/adebruijn","html_url":"https://github.com/adebruijn","followers_url":"https://api.github.com/users/adebruijn/followers","following_url":"https://api.github.com/users/adebruijn/following{/other_user}","gists_url":"https://api.github.com/users/adebruijn/gists{/gist_id}","starred_url":"https://api.github.com/users/adebruijn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/adebruijn/subscriptions","organizations_url":"https://api.github.com/users/adebruijn/orgs","repos_url":"https://api.github.com/users/adebruijn/repos","events_url":"https://api.github.com/users/adebruijn/events{/privacy}","received_events_url":"https://api.github.com/users/adebruijn/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":9,"created_at":"2016-07-24T14:43:10Z","updated_at":"2016-09-10T11:40:15Z","closed_at":null,"body":"hello mr de ruiter, i am dutch too. \r\n\r\nwant to make your dcf77 a-clock. very impressive design.\r\n\r\nbefore i start to buy everything by Conrad, is there a kit available ? If there is, it is  easier for me because i am a beginner. I have downloaded al the files. where can i find the code to program the ardueno ?\r\n\r\nGreetings\r\n\r\nAndré de Bruijn\r\nVoorhout\r\nThe netherlands"},"comment":{"url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0/issues/comments/246107253","html_url":"https://github.com/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1#issuecomment-246107253","issue_url":"https://api.github.com/repos/deruiter/DCF77-Analyzer-Clock-V2.0/issues/1","id":246107253,"user":{"login":"deruiter","id":8522600,"avatar_url":"https://avatars.githubusercontent.com/u/8522600?v=3","gravatar_id":"","url":"https://api.github.com/users/deruiter","html_url":"https://github.com/deruiter","followers_url":"https://api.github.com/users/deruiter/followers","following_url":"https://api.github.com/users/deruiter/following{/other_user}","gists_url":"https://api.github.com/users/deruiter/gists{/gist_id}","starred_url":"https://api.github.com/users/deruiter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/deruiter/subscriptions","organizations_url":"https://api.github.com/users/deruiter/orgs","repos_url":"https://api.github.com/users/deruiter/repos","events_url":"https://api.github.com/users/deruiter/events{/privacy}","received_events_url":"https://api.github.com/users/deruiter/received_events","type":"User","site_admin":false},"created_at":"2016-09-10T11:40:15Z","updated_at":"2016-09-10T11:40:15Z","body":"Hi André, For the right resistor value for the LED's, you need to look at the [maxim 72xx datasheet pages 10 and 11](https://datasheets.maximintegrated.com/en/ds/MAX7219-MAX7221.pdf)\r\n\r\nI don't know what value I used but I think it was 27K because the most common LED's as a guideline have a Forward Voltage of 2 to 2,5V and a current of 20mA. \r\nIn any case, 220 Ohm is way to low! The maxim chip cannot handle the large currents flowing so that's the reason I think some LED's are not lit at all\r\n\r\nIf the led's are not bright enough **at maximum brightness setting in the code**, then your only option is to use other LED's.  The LED's I used are very bright at the V/I values mentioned. Other LED's I have are very dim in comparison but are cheap.\r\n\r\nI don't know yet how to pass my private email address to you so we can arrange the front panel sale but when I do I will let you know.\r\n\r\n\r\n"}}
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