\n
\nDATE=$(date +"%Y-%m-%d_%H%M")
\n
\nv4l2-ctl -c exposure_auto=1
\nv4l2-ctl -c gamma=5
\nv4l2-ctl -c brightness=128
\nv4l2-ctl -c contrast=67
\nv4l2-ctl -c exposure_auto=2
\n
\nfswebcam -c fswebcam.cfg \/var\/tmp\/image.jpg
\ncurl -T \/var\/tmp\/image.jpg -u <username>:<password> ftp:\/\/<ftp-server address>\/<directory>\/$DATE.jpg<\/div><\/div>\n
At least I thought so, but suddenly and without any intervention the exposure settings stopped working again. Everything was fine until 14:50 local time Is this a problem of the particular webcam I am using? I don’t know.<\/p>\n","protected":false},"excerpt":{"rendered":" I had some problems with fswebcam to set the automatic exposure. The exact way how to enter certain parameters is not clear from the lacking documentation, but it works fine if you set parameters through another command line tool. This is the script behind BirdCam: #!\/bin\/bash DATE=$(date +"%Y-%m-%d_%H%M") v4l2-ctl -c exposure_auto=1 v4l2-ctl -c gamma=5 v4l2-ctl […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[22,25,19,27],"tags":[],"class_list":["post-1800","post","type-post","status-publish","format-standard","hentry","category-computers_en","category-outdoors_en","category-photography_en","category-science_en","entry"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p48grL-t2","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/1800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1800"}],"version-history":[{"count":4,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/1800\/revisions"}],"predecessor-version":[{"id":2369,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/1800\/revisions\/2369"}],"wp:attachment":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n![\"2016-04-11_1250\"](\"http:\/\/www.sciencetronics.com\/greenphotons\/wp-content\/uploads\/2016\/04\/2016-04-11_1250.jpg\")
<\/a>
\nbut a minute later the camera captured this image and continued to do so…
\n![\"2016-04-11_1251\"](\"http:\/\/www.sciencetronics.com\/greenphotons\/wp-content\/uploads\/2016\/04\/2016-04-11_1251.jpg\")
<\/a><\/p>\n