{"id":1526,"date":"2018-09-12T13:00:09","date_gmt":"2018-09-12T12:00:09","guid":{"rendered":"http:\/\/chewett.co.uk\/blog\/?p=1526"},"modified":"2018-09-09T22:34:42","modified_gmt":"2018-09-09T21:34:42","slug":"sda-scl-i2c-twi-pins-on-the-arduino","status":"publish","type":"post","link":"https:\/\/chewett.co.uk\/blog\/1526\/sda-scl-i2c-twi-pins-on-the-arduino\/","title":{"rendered":"SDA SCL I2C TWI Pins on the Arduino"},"content":{"rendered":"

\"\"<\/p>\n

This post details where the SDA SCL pins used for I2C\/TWI are available on Arduino’s.<\/p>\n

<\/p>\n

I2C TWI pins on the Arduino<\/h2>\n

The SDA and SCL pins are the used for communication using the I2C\/TWI protocols. These allow multiple devices to communicate the Arduino on a standard interface.<\/p>\n

Most Arduino’s only have one set of these pins however the Due has two.<\/p>\n\n\n\n\n\n\n\n
Board<\/strong><\/td>\nI2C<\/span>\u00a0\/ TWI pins<\/strong><\/td>\n<\/tr>\n
Uno, Ethernet<\/td>\nA4 (SDA), A5 (SCL)<\/td>\n<\/tr>\n
Mega2560<\/td>\n20 (SDA), 21 (SCL)<\/td>\n<\/tr>\n
Leonardo<\/td>\n2 (SDA), 3 (SCL)<\/td>\n<\/tr>\n
Due<\/td>\n20 (SDA), 21 (SCL),\u00a0SDA1<\/span>,\u00a0SCL1<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For more information, you can read the Arduino page on the Wire library<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

This post details where the SDA SCL pins used for I2C\/TWI are available on Arduino’s.<\/p>\n","protected":false},"author":1,"featured_media":1528,"comment_status":"open","ping_status":"open","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":"","jetpack_publicize_message":"Today I have written a short post on the SDA SCL pins for the #Arduino to communicate on #I2C #TWI","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[97],"tags":[132,296,301,300,299],"class_list":["post-1526","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronics","tag-arduino","tag-i2c","tag-scl","tag-sda","tag-twi"],"wppr_data":{"cwp_meta_box_check":"No"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/chewett.co.uk\/blog\/wp-content\/uploads\/2018\/09\/i2c_twi_pins_on_arduino.jpg?fit=800%2C800&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2toWX-oC","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1521,"url":"https:\/\/chewett.co.uk\/blog\/1521\/128x64-i2c-sh1106-oled-display-module-screen-for-arduino-review-and-code\/","url_meta":{"origin":1526,"position":0},"title":"128×64 I2C\u00a0SH1106 OLED Display Module Screen for Arduino Review and Code","author":"Chewett","date":"December 8, 2018","format":false,"excerpt":"Today I review the 128x64 I2C\u00a0SH1106 OLED Display Module Screen for Arduino and provide example code. 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