{"id":1316,"date":"2013-12-02T23:26:35","date_gmt":"2013-12-02T21:26:35","guid":{"rendered":"https:\/\/zz-indigo.mavipet.sk\/?p=1316"},"modified":"2019-10-29T18:04:53","modified_gmt":"2019-10-29T18:04:53","slug":"ako-som-nedokazal-upiect-raspberry-pi","status":"publish","type":"post","link":"https:\/\/zz-indigo.mavipet.sk\/?p=1316","title":{"rendered":"Ako som nedok\u00e1zal upiec\u0165 Raspberry Pi"},"content":{"rendered":"

Ke\u010f\u017ee mi do\u0161iel zdroj pekn\u00fdch krabi\u010diek som sa rozhodol m\u00f4j Pi server pres\u0165ahova\u0165 do inej „hor\u0161ej“ krabi\u010dky. T\u00e1to je dos\u0165 za\u017eltnut\u00e1 ale hlavne nem\u00e1 rovn\u00e9 \u010delo \u010do bol neprekonate\u013en\u00ed\u00a0 probl\u00e9m. Pri tejto pr\u00edle\u017eitosti som sa rozhodol sk\u00fasi\u0165 ako je na tom chladenie m\u00f4jho servera.<\/p>\n

<\/p>\n

Intern\u00e9 rie\u0161enie pop\u00ed\u0161em v \u010fal\u0161om pr\u00edspevku tu sa budeme zaobera\u0165 len teplom. Meral som teplotu GPU,CPU a stav pinu ovl\u00e1daj\u00faceho ventil\u00e1tor. Aj ke\u010f je hlavn\u00fd pr\u00fad vzduchu dos\u0165 mimo raspberry pi v\u00fdsledok je prekvapiv\u00fd.<\/p>\n

Jedn\u00e1 sa o prv\u00fa gener\u00e1ciou Raspberry PI B ktor\u00e1 ma osaden\u00fd chladi\u010d na CPU 12x12x12mm 4-rebra. na stabiliz\u00e1tory a „sie\u0165ovke“ s\u00fa chladi\u010de 7x7x5mm 5 rebier.<\/p>\n

Data som zbieral nasleduj\u00facim skriptom ktor\u00fd vygeneroval CVS s\u00fabor:<\/p>\n

root@naruto:~# cat temp_csv.sh\r\n#!\/bin\/bash\r\n# port na ktorom je ovladanie ventilatora\r\nPORT=4\r\necho \"date_time\",\"cpu\",\"gpu\",\"coolong\"\r\nwhile :\r\ndo\r\n\u00a0\u00a0 \u00a0cpuTemp0=$(cat \/sys\/class\/thermal\/thermal_zone0\/temp)\r\n\u00a0\u00a0 \u00a0cpuTemp1=$(($cpuTemp0\/1000))\r\n\u00a0\u00a0 \u00a0cpuTemp2=$(($cpuTemp0\/100))\r\n\u00a0\u00a0 \u00a0cpuTempM=$(($cpuTemp2 % $cpuTemp1))\r\n\u00a0\u00a0 \u00a0echo \"$(date)\",\"$cpuTemp1\".\"$cpuTempM\",$(\/opt\/vc\/bin\/vcgencmd measure_temp | cut -f 2 -d = | cut -f 1 -d '),$(cat \/sys\/class\/gpio\/gpio$PORT\/value)\r\n\u00a0\u00a0 \u00a0sleep 30\r\ndone<\/pre>\n
V\u00fdsledok je vcelku prekvapiv\u00fd v uzavretom priestore boxu na 3.5″ disku bola priemern\u00e1 teplota bez pr\u00eddavn\u00e9ho chladenia 45 stup\u0148ov Celzia. A ani stress test nedok\u00e1zal teplotu dosta\u0165 cez 50 stup\u0148ov Celzia. Zapnutie ventil\u00e1tora zn\u00ed\u017eilo teplotu o viac ako 10 stup\u0148ov.<\/p>\n
Merania boli vykonan\u00e9 pri teplote prostredia pribli\u017ene 20 stup\u0148ov Celzia.<\/p>\n
Stress test bol realizovan\u00fd nasledovne<\/p>\n
stress --cpu 15 --io 15 --vm 15 --vm-bytes 10M --timeout 900s<\/code><\/pre>\n
Vidno to ako miestne zv\u00fd\u0161enie teploty o cca 5 stup\u0148ov Celzia.<\/p>\n
Hodnota cooling: 0 – Vypnut\u00fd ventil\u00e1tor 1 – Zapnut\u00fd ventil\u00e1tor.<\/p>\n
<\/p>\n
V\u00fdsledok ukazuje \u017ee dan\u00e9 rie\u0161enie je vhodn\u00e9 aj na dlhodob\u00fa prev\u00e1dzku celoro\u010dne.<\/p>\n","protected":false},"excerpt":{"rendered":"
Ke\u010f\u017ee mi do\u0161iel zdroj pekn\u00fdch krabi\u010diek som sa rozhodol m\u00f4j Pi server pres\u0165ahova\u0165 do inej „hor\u0161ej“ krabi\u010dky. T\u00e1to je dos\u0165 za\u017eltnut\u00e1 ale hlavne nem\u00e1 rovn\u00e9 \u010delo \u010do bol neprekonate\u013en\u00ed\u00a0 probl\u00e9m. Pri tejto pr\u00edle\u017eitosti som sa rozhodol sk\u00fasi\u0165 ako je na … Pokra\u010dova\u0165 v \u010d\u00edtan\u00ed →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,7],"tags":[],"class_list":["post-1316","post","type-post","status-publish","format-standard","hentry","category-hw-a-sw","category-raspberry-pi"],"_links":{"self":[{"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=\/wp\/v2\/posts\/1316","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1316"}],"version-history":[{"count":1,"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=\/wp\/v2\/posts\/1316\/revisions"}],"predecessor-version":[{"id":2092,"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=\/wp\/v2\/posts\/1316\/revisions\/2092"}],"wp:attachment":[{"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zz-indigo.mavipet.sk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}