{"id":1594,"date":"2015-02-28T13:48:30","date_gmt":"2015-02-28T12:48:30","guid":{"rendered":"http:\/\/labalec.fr\/erwan\/?p=1594"},"modified":"2015-02-28T13:48:30","modified_gmt":"2015-02-28T12:48:30","slug":"water-impulse-counter-and-arduino-part-4-last","status":"publish","type":"post","link":"https:\/\/labalec.fr\/erwan\/?p=1594","title":{"rendered":"Water impulse counter and Arduino : Part 4 (Last)"},"content":{"rendered":"

This is the last article about my water impulse counter project.
\n3 previous articles can be found here <\/a>. <\/p>\n

The last issue I encountered was about electro magnetic disturbances (probably my gaz heater nearby).
\nI initially planned to detect FALLING impulses (high to low, low meaning the reed switch is closed).
\nBut about 4 times per hour, i detected a falling impulse, and this even the water circuit closed !<\/p>\n

I therefore decided to review my code in the interrupt function now based on a CHANGE event (no more FALLING).<\/p>\n


\nvoid IntChange() {
\n if (digitalRead(SWITCHPIN)==LOW) {
\n start=millis();
\n change=false;
\n} else {
\n if (start>0) {
\n pulse=millis()-start;
\n start=0;
\n change=true;
\n } else {
\n start=0;
\n change=false;
\n }\/\/if (start>0)
\n} \/\/if (digitalRead(SWITCHPIN)==LOW) {
\n}
\n<\/code><\/p>\n

And this proves to work perfectly now \ud83d\ude42
\nSee graph below.
\n<\/a><\/p>\n

The whole code can be found here<\/a>.
\nit includes a web server (for my domotic box to query), a sd card reader (to store the counter value between power off), an interrupt handler.<\/p>\n","protected":false},"excerpt":{"rendered":"

This is the last article about my water impulse counter project. 3 previous articles can be found here . The last issue I encountered was about electro magnetic disturbances (probably my gaz heater nearby). I initially planned to detect FALLING impulses (high to low, low meaning the reed switch is closed). But about 4 times […]<\/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-1594","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\/1594","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=1594"}],"version-history":[{"count":1,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1594\/revisions"}],"predecessor-version":[{"id":1596,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=\/wp\/v2\/posts\/1594\/revisions\/1596"}],"wp:attachment":[{"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labalec.fr\/erwan\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}