![\"\"](\"http:\/\/www.daniel.slask.pl\/m\/wp-content\/uploads\/2025\/04\/01-2.png\")
<\/a><\/figure><\/div>\n\n\nSkrypt steruj\u0105cy wentylatorem<\/h3>\n\n\n\n
Poni\u017cej przedstawiam skrypt do sterowania wentylatorem (niestety nie pami\u0119tam \u017ar\u00f3d\u0142a tego skryptu wi\u0119c podam tylko jego cz\u0119\u015b\u0107). Wentylator zasilany jest napi\u0119ciem 5VDC<\/p>\n\n\n\n
#!\/usr\/bin\/python\n# -*- coding: utf-8 -*-\n\nimport RPi.GPIO as GPIO\nimport time\nimport subprocess\n\n# Configuration\nFAN_PIN = 14 # BCM pin used to drive transistor's base\nWAIT_TIME = 1 # [s] Time to wait between each refresh\nFAN_MIN = 25 # [%] Fan minimum speed.\nPWM_FREQ = 50 # [Hz] Change this value if fan has strange behavior\n\n# Configurable temperature and fan speed steps\ntempSteps = [40, 70] # [\u00b0C]\nspeedSteps = [0, 100] # [%]\n\n# Fan speed will change only of the difference of temperature is higher than hysteresis\nhyst = 1\n\n# Setup GPIO pin\nGPIO.setmode(GPIO.BCM)\nGPIO.setup(FAN_PIN, GPIO.OUT, initial=GPIO.LOW)\nfan = GPIO.PWM(FAN_PIN, PWM_FREQ)\nfan.start(0)\n\ni = 0\ncpuTemp = 0\nfanSpeed = 0\ncpuTempOld = 0\nfanSpeedOld = 0\n\ndef PrintTemp():\n print('CPU temperature is')\n time.sleep(5)\n\n# We must set a speed value for each temperature step\nif len(speedSteps) != len(tempSteps):\n print(\"Numbers of temp steps and speed steps are different\")\n exit(0)\n\nprint('Start')\n\n<\/code><\/pre>\n\n\n\n <\/p>\n\n\n\n
Uruchomienie us\u0142ugi dla screen<\/h3>\n\n\n\n
Tworzymy us\u0142ug\u0119 fan_start.service w katalogu systemd\/system\/ poprzez otwarcie go w edytorze a nast\u0119pnie zapisaniu.<\/p>\n\n\n\n
sudo nano \/etc\/systemd\/system\/fan.service<\/code><\/pre>\n\n\n\nW us\u0142udze tej wpisujemy nast\u0119puj\u0105cy kod powoduj\u0105cy uruchomienie skryptu bash.<\/p>\n\n\n\n
[Unit]\nDescription=Test Screen Creation\nAfter=network.target\n\n[Service]\nEnvironment=\"PYTHONPATH=\/home\/daniel\/skrypty\" #gdzie znajduje si\u0119 nasz skrypt\nEnvironment=\"OTHER_VAR=value\"\nUser=daniel #u\u017cytkownik kt\u00f3ry to uruchamia\nWorkingDirectory=\/home\/daniel\/skrypty #\u015bcie\u017cka do naszych skrypt\u00f3w\nExecStart=\/usr\/bin\/screen -dmS wentylator python3 \/home\/daniel\/skrypty\/fan_ctrl.py #nasz skrypt\nType=forking\nRemainAfterExit=yes\nEnvironment=TERM=xterm\n\n[Install]\nWantedBy=multi-user.target<\/code><\/pre>\n\n\n\nUs\u0142uga ta uruchamia powoduje utworzenie wirtualnej konsoli i uruchomienie w niej naszego programu.<\/p>\n\n\n\n
Aby sprawdzi\u0107 dzia\u0142anie skryptu w pierwszej kolejno\u015bci aktywujemy nasz\u0105 us\u0142ug\u0119 a nast\u0119pnie sprawdzamy status tej us\u0142ugi. Czasem dobrze jest zresetowa\u0107 nasz\u0105 malink\u0119.<\/p>\n\n\n\n
sudo systemctl enable fan.service\nsudo systemctl start fan.service\nsudo systemctl status fan.service<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"Jaki\u015b czas temu na swojej malince nr 4 zamontowa\u0142em obudow\u0119 z wentylatorem – wentylator jest na 3piny, wi\u0119c jest mo\u017cliwo\u015b\u0107 sterowania jego obrotami. Napisa\u0142em wi\u0119c ma\u0142y skrypt (zmodyfikowa\u0142em to co znalaz\u0142em w internecie – niestety \u017ar\u00f3d\u0142a ju\u017c nie potrafi\u0119 znale\u017a\u0107)…
Wi\u0119cej<\/a><\/p>\n","protected":false},"author":1,"featured_media":2075,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[23,178],"tags":[272,164,273],"views":75,"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/daniel.slask.pl\/m\/wp-content\/uploads\/2025\/04\/rpi-python-scaled.jpg","jetpack_shortlink":"https:\/\/wp.me\/pcPgV3-wn","_links":{"self":[{"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/posts\/2007"}],"collection":[{"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/comments?post=2007"}],"version-history":[{"count":2,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/posts\/2007\/revisions"}],"predecessor-version":[{"id":2076,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/posts\/2007\/revisions\/2076"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/media\/2075"}],"wp:attachment":[{"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/media?parent=2007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/categories?post=2007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/daniel.slask.pl\/m\/wp-json\/wp\/v2\/tags?post=2007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}