{"id":17,"date":"2009-10-16T17:21:21","date_gmt":"2009-10-16T15:21:21","guid":{"rendered":"http:\/\/lisas.de\/~hauser\/wp\/?p=17"},"modified":"2009-12-25T21:36:28","modified_gmt":"2009-12-25T19:36:28","slug":"first-result","status":"publish","type":"post","link":"https:\/\/lisas.de\/~hauser\/wp\/?p=17","title":{"rendered":"First Result"},"content":{"rendered":"

Yesterday evening the first real result was visible. Reception of DMX data and output of PWM on 8 channels is working now.<\/p>\n

At the moment it’s only a development board.<\/p>\n

\"prototype<\/p>\n

All external parts are attached via loooong cables to other hardware.<\/p>\n

A PCB Design is ongoing, but not all the details are yet clear for series production.<\/p>\n

OKOK, that was maybe a little bit to short. First of all:<\/p>\n

DMX<\/a>: a strange protocol, that looks like it was intended to keep amateurs from building their own devices by adding a protocol error as start signal. But with todays \u00b5Cs is possible, even though it’s a little bit ugly.<\/p>\n

In my setup there is a light control desk which is the sender. So I only care about receiving at the moment.<\/p>\n

The received 8 byte are saved in the \u00b5C and are the input data for the PWM<\/a> generator.<\/p>\n

Th PWM signal is used for PFC<\/a>.<\/p>\n

An external circuitry is used to detect the zero crossing of the 230V AC and based on the received DMX data triacs<\/a> can be started.<\/p>\n

Now that the basic functionality is working I can add service functions and error detection.<\/p>\n","protected":false},"excerpt":{"rendered":"

Yesterday evening the first real result was visible. Reception of DMX data and output of PWM on 8 channels is working now. At the moment it’s only a development board. All external parts are attached via loooong cables to other hardware. A PCB Design is ongoing, but not all the details are yet clear for … Continue reading First Result<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[18,20],"class_list":["post-17","post","type-post","status-publish","format-standard","hentry","category-hardware","tag-dmx","tag-pwm"],"_links":{"self":[{"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=\/wp\/v2\/posts\/17","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17"}],"version-history":[{"count":18,"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=\/wp\/v2\/posts\/17\/revisions"}],"predecessor-version":[{"id":61,"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=\/wp\/v2\/posts\/17\/revisions\/61"}],"wp:attachment":[{"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lisas.de\/~hauser\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}