![\"4digits\"](\"https:\/\/labalec.fr\/erwan\/wp-content\/uploads\/2014\/09\/4digits.png\")
<\/a><\/p>\n<\/p>\n
12 pins : 8 for the segments (including the dots), 4 for each digit
\nTop row : 1, a, f, 2, 3, b
\nBottomw row: e, d, dp, c, g, 4<\/p>\n
I decided to use the Sevseg <\/a>arduino library. The wiring is then as is :<\/strong><\/p>\n Arduino pins -> 4digits display pins Below the schema<\/strong><\/p>\n Note that this is a lot of digital IO’s used. A future article could focus on reducing the number of IO’s needed. I got myself a cheap 4 digits 7-led display and I thought I would spend a few mns playing with it and documenting it. 12 pins : 8 for the segments (including the dots), 4 for each digit Top row : 1, a, f, 2, 3, b Bottomw row: e, d, dp, c, g, […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1443","post","type-post","status-publish","format-standard","hentry","category-arduino","category-18-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"_links":{"self":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1443"}],"version-history":[{"count":7,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1443\/revisions"}],"predecessor-version":[{"id":1479,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1443\/revisions\/1479"}],"wp:attachment":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nMore about this library here<\/a>.<\/p>\n
\n2->1
\n6->a
\n11->f
\n3->2
\n4->3
\n7->b
\n10->e
\n9->d
\n13->dp
\n8->c
\n12->g
\n5->4<\/p>\n<\/a><\/p>\n
\nBelow the arduino sketch<\/strong> (from the example provided with the sevseg library)<\/p>\n\r\n\/*Written by Dean Reading, 2012. deanreading@hotmail.com\r\n \r\n This example is a centi-second counter to demonstrate the\r\n use of my SevSeg library.\r\n *\/\r\n\r\n#include \"SevSeg.h\"\r\n\r\n\/\/Create an instance of the object.\r\nSevSeg sevseg;\r\n\r\n\/\/Create global variables\r\nunsigned long timer;\r\nint CentSec=0;\r\n\r\nvoid setup() {\r\n \/\/I am using a common anode display, with the digit pins connected\r\n \/\/from 2-5 and the segment pins connected from 6-13\r\n sevseg.Begin(1,2,3,4,5,6,7,8,9,10,11,12,13);\r\n \/\/Set the desired brightness (0 to 100);\r\n sevseg.Brightness(50);\r\n\r\n timer=millis();\r\n}\r\n\r\nvoid loop() {\r\n \/\/Produce an output on the display\r\n sevseg.PrintOutput();\r\n\r\n \/\/Check if 10ms has elapsed\r\n unsigned long mils=millis();\r\n if (mils-timer>=10) {\r\n timer=mils;\r\n CentSec++;\r\n if (CentSec==10000) { \/\/ Reset to 0 after counting for 100 seconds.\r\n CentSec=0;\r\n }\r\n \/\/Update the number to be displayed, with a decimal\r\n \/\/place in the correct position.\r\n sevseg.NewNum(CentSec,(byte) 2);\r\n }\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"