{"id":672,"date":"2017-05-07T12:49:22","date_gmt":"2017-05-07T10:49:22","guid":{"rendered":"http:\/\/pe1br.nl\/?page_id=672"},"modified":"2020-12-20T12:10:54","modified_gmt":"2020-12-20T11:10:54","slug":"i2c-attenuator","status":"publish","type":"page","link":"https:\/\/www.pe1br.nl\/?page_id=672","title":{"rendered":"I2C Attenuator"},"content":{"rendered":"<h1>design:<\/h1>\n<p>I found an attenuator board on ebay for less than 10 dollar.<\/p>\n<p><img src=\/wp-content\/uploads\/2017\/05\/foto3-attenuator-e1494153142178.jpg \/ width=\"320\" height=\"240\"><\/p>\n<p>My idea was to control this board over I2C so I could connect it to my I2C PLL controller or from another I2C micro controller board.<br \/>\nI designed a small board with an I2C to I\/O converter (PCF8574).<\/p>\n<p><img loading=\"lazy\" src=\"\/wp-content\/uploads\/2017\/05\/foto1-attenuator-e1494153430842.jpg\" \/ width=\"320\" height=\"240\"> <img loading=\"lazy\" src=\"\/wp-content\/uploads\/2017\/05\/foto2-attenuator-e1494153537730.jpg\" alt=\"ATT board with ATT\" \/ width=\"320\" height=\"240\"><\/p>\n<h1>Connections:<\/h1>\n<p><img src=\"\/wp-content\/uploads\/2017\/05\/Attenuator-connections.png\" alt=\"ATT board connections\" \/><\/p>\n<h1>Downloads:<\/h1>\n<p><a href=\"\/attenuator%20V1.sch\" title=\"schematic file\">Eagle schematic file<\/a><br \/>\n<a href=\"\/attenuator%20V1.brd\" title=\"board file\">Eagle board file<\/a><\/p>\n<h1>Copyrights:<\/h1>\n<p>All software is distributed under the GNU\/GPL licence.<br \/>\nAll hardware and designs are distributed under a Creative Commons license Attribution-ShareAlike 2.5.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>design: I found an attenuator board on ebay for less than 10 dollar. My idea was to control this board over I2C so I could connect it to my I2C PLL controller or from another I2C micro controller board. I designed a small board with an I2C to I\/O converter (PCF8574). Connections: Downloads: Eagle schematic&hellip; <a class=\"more-link\" href=\"https:\/\/www.pe1br.nl\/?page_id=672\">Continue reading <span class=\"screen-reader-text\">I2C Attenuator<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":32,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"page-templates\/front-page.php","meta":[],"_links":{"self":[{"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/pages\/672"}],"collection":[{"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=672"}],"version-history":[{"count":10,"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/pages\/672\/revisions"}],"predecessor-version":[{"id":687,"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/pages\/672\/revisions\/687"}],"up":[{"embeddable":true,"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=\/wp\/v2\/pages\/32"}],"wp:attachment":[{"href":"https:\/\/www.pe1br.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}