If you’re wondering how to get I2C running from your MEGA to Duemilanove Arduino boards here’s the scoop:<\/p>\n
MEGA Pin 20 is SDA (Serial Data)<\/p>\n
Duemilanove Analog Pin 4 is SDA<\/p>\n
MEGA Pin 21 is SCL (Serial Clock)<\/p>\n
Duemilanove Analog Pin 5 is SCL<\/p>\n
Hook up SCL to SCL and SDA to SDA across the boards, also hook up ground between the two boards.\u00a0 You do NOT need to connect the +5V between boards.<\/p>\n
You’ll need\u00a0 SCL and SDA to be pulled up (to +5V with resistors, between 2.2kOhm and 47kOhm), it will run without them but its recommended to make your bus within specification.<\/p>\n
Example bus from Instructables<\/a>. If you’re wondering how to get I2C running from your MEGA to Duemilanove Arduino boards here’s the scoop: MEGA Pin 20 is SDA (Serial Data) Duemilanove Analog Pin 4 is SDA MEGA Pin 21 is SCL (Serial Clock) Duemilanove Analog Pin 5 is SCL Hook up SCL to SCL and SDA to SDA across the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[73,78,77],"class_list":["post-242","post","type-post","status-publish","format-standard","hentry","category-electronics","tag-arduino","tag-arduino-duemilanove","tag-arduino-mega"],"_links":{"self":[{"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=242"}],"version-history":[{"count":3,"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/242\/revisions"}],"predecessor-version":[{"id":258,"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/242\/revisions\/258"}],"wp:attachment":[{"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chrismeyer.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nMEGA Pinout information (search for i2c on the page)<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"