{"id":1582,"date":"2015-02-21T23:00:43","date_gmt":"2015-02-21T22:00:43","guid":{"rendered":"http:\/\/labalec.fr\/erwan\/?p=1582"},"modified":"2015-02-28T13:37:07","modified_gmt":"2015-02-28T12:37:07","slug":"water-impulse-counter-and-arduino-part-3","status":"publish","type":"post","link":"https:\/\/labalec.fr\/erwan\/?p=1582","title":{"rendered":"Water impulse counter and Arduino : Part 3"},"content":{"rendered":"

In previous article<\/a>, my water pulse was settled in my garage.<\/p>\n

Lets now design a wiring schema based on Arduino.
\nThe idea is to use interrupts on the Arduino : it will be HIGH (i.e near 5V) always except and it will be LOW when the reed switch will be closed.
\nWe then want to detect either when it is LOW, or FALLING, or CHANGE.
\nFor now I’ll go for FALLING as this one is the easiest to implement.<\/p>\n

\"rising-edge\"\"falling-edge\"<\/a><\/p>\n

 <\/p>\n

We would then use something like the below :<\/p>\n


\n\/\/in the setup
\nattachInterrupt(1, CallBack, FALLING);<\/code><\/p>\n

void CallBack(){
\n\/\/the below check will software debounce our switch
\nif (millis()-last_water>500) {
\nlast_water=millis();
\nwater=water+1;
\n}
\n}<\/p>\n

\"\"<\/a><\/p>\n

Next article will be about the code (a web server, logging to SD card, monitoring impulses …).<\/p>\n","protected":false},"excerpt":{"rendered":"

In previous article, my water pulse was settled in my garage. Lets now design a wiring schema based on Arduino. The idea is to use interrupts on the Arduino : it will be HIGH (i.e near 5V) always except and it will be LOW when the reed switch will be closed. We then want to […]<\/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":[72],"class_list":["post-1582","post","type-post","status-publish","format-standard","hentry","category-arduino","tag-water-impulse-counter","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\/1582","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=1582"}],"version-history":[{"count":6,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1582\/revisions"}],"predecessor-version":[{"id":1593,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1582\/revisions\/1593"}],"wp:attachment":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}