{"id":1072,"date":"2013-05-15T14:53:23","date_gmt":"2013-05-15T12:53:23","guid":{"rendered":"http:\/\/www.dainile.lt\/?p=1072"},"modified":"2015-11-03T13:45:36","modified_gmt":"2015-11-03T11:45:36","slug":"automobiline-sirena-reverse-engineering","status":"publish","type":"post","link":"https:\/\/www.dclabs.lt\/dainiaus\/automobiline-sirena-reverse-engineering\/","title":{"rendered":"Automobilin\u0117 sirena &#8211; reverse engineering"},"content":{"rendered":"<p>Surinkau \u010dia kada keleto ton\u0173 garso generatori\u0173. Nieko ypatingo, pagrindas viena mikroschema, kuri ir ton\u0105 generuoja ir tranzistorius valdo. Esm\u0117 tame, kad netur\u0117jau sirenos, kuri gal\u0117t\u0173 i\u0161pyps\u0117ti visus tuos garsus. Teko pirkti <a href=\"http:\/\/www.lemona.lt\/index.php?page=item&amp;i_id=72826\" target=\"_blank\">1T-S siren\u0105<\/a>\u00a0ir truputi patiuninguoti. 1T-S sirena gavusi maitinim\u0105 pradeda \u017eviegti savo \u012fkyriu uiyyyjiuuuuiyyyjiuuuuiyyyjiuuuuiyyyjiuuu&#8230; Rei\u0161kia viduje yra ka\u017ekas, kas generuoja t\u0105 signal\u0105. Kadangi ardymas nesud\u0117tingas tai apie j\u012f nera\u0161ysiu. I\u0161ard\u017eius radau ir signal\u0105 generuojan\u010di\u0105 schem\u0105.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3360.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1087\" alt=\"IMG_3360\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3360-300x274.jpg\" width=\"300\" height=\"274\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3360-300x274.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3360.jpg 839w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3361.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1084\" alt=\"IMG_3361\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3361-300x156.jpg\" width=\"300\" height=\"156\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3361-300x156.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3361.jpg 1024w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3362.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1085\" alt=\"IMG_3362\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3362-300x296.jpg\" width=\"300\" height=\"296\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3362-300x296.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3362.jpg 776w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3363.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1086\" alt=\"IMG_3363\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3363-300x289.jpg\" width=\"300\" height=\"289\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3363-300x289.jpg 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/IMG_3363.jpg 795w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>J\u0105 i\u0161operavus liko tik man reikalingas auk\u0161to da\u017enio garsiakalbis. O toliau &#8211; apie t\u0105 i\u0161operuot\u0105 schem\u0105. Pagal u\u017era\u0161us ant jos (Zhihua ir PC-61) surasti nieko nepavyko, kad b\u016bt\u0173 ai\u0161kiau teko pasibrai\u017eyti.<\/p>\n<p><a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-1076\" alt=\"2\" src=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/2-300x103.png\" width=\"300\" height=\"103\" srcset=\"https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/2-300x103.png 300w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/2-1024x351.png 1024w, https:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/2.png 1734w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>N\u0105, va\u017eiuojam i\u0161 kair\u0117s \u012f de\u0161in\u0119. Diodas D1 &#8211; neb\u016btinas, apsaugo schem\u0105 nuo atvirk\u0161\u010dio poliarumo maitinimo nenaudojant tam saugiklio. Nors saugiklis, \u017einoma, vistiek geras dalykas. Kondensatorius C1 &#8211; \u012fprastas daugumoje \u012frengini\u0173, filtriukas&#8230; R1, R2, D2 sudaro mikroschemos maitinimo blok\u0105, diodas &#8211; 3,9V zeneris. Per rezistori\u0173 R3 vidinio impuls\u0173 generatoriaus signaliukas \u0161eriamas \u012f impuls\u0173 \u012f\u0117jim\u0105. Jeigu netikt\u0173 vidinio generatoriaus da\u017enis &#8211; galima tiesiog pajungti i\u0161orin\u012f. C2 pajungtas \u012f Reset koj\u0105, \u012fjungus perkrauna generatoriuk\u0105. Pati mikroschema &#8211; <a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/LC9806.pdf\" target=\"_blank\">LC9806. Apra\u0161ymas yra \u010dia<\/a>. N\u0105 ir visas galas, per srov\u0119 ribojan\u010dius rezistorius valdomi tranzistoriai T1 ir T2, kurie savo ruo\u017etu valdo likusius 4 tranzistorius. Du teigiamam pusperiod\u017eiui ir du neigiamam. <a href=\"http:\/\/www.dclabs.lt\/dainiaus\/wp-content\/uploads\/2013\/05\/One-tone-siren.zip\" target=\"_blank\">Eagle failiukas su schema yra \u010dia<\/a>. Negarantuoju, kad nepridariau klaid\u0173 brai\u017eydamas \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Surinkau \u010dia kada keleto ton\u0173 garso generatori\u0173. Nieko ypatingo, pagrindas viena mikroschema, kuri ir ton\u0105 generuoja ir tranzistorius valdo. Esm\u0117 tame, kad netur\u0117jau sirenos, kuri gal\u0117t\u0173 i\u0161pyps\u0117ti visus tuos garsus. Teko pirkti 1T-S siren\u0105\u00a0ir truputi patiuninguoti. 1T-S sirena gavusi maitinim\u0105 pradeda \u017eviegti savo \u012fkyriu uiyyyjiuuuuiyyyjiuuuuiyyyjiuuuuiyyyjiuuu&#8230; Rei\u0161kia viduje yra ka\u017ekas, kas generuoja t\u0105 signal\u0105. Kadangi ardymas&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,4],"tags":[],"class_list":["post-1072","post","type-post","status-publish","format-standard","hentry","category-auto","category-elektronika"],"_links":{"self":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/1072","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/comments?post=1072"}],"version-history":[{"count":9,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/1072\/revisions"}],"predecessor-version":[{"id":1934,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/posts\/1072\/revisions\/1934"}],"wp:attachment":[{"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/media?parent=1072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/categories?post=1072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dclabs.lt\/dainiaus\/wp-json\/wp\/v2\/tags?post=1072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}