{"id":6525,"date":"2023-09-14T16:35:56","date_gmt":"2023-09-14T14:35:56","guid":{"rendered":"https:\/\/www.ardpylab.fr\/?page_id=6525"},"modified":"2023-09-15T10:59:19","modified_gmt":"2023-09-15T08:59:19","slug":"des-sketchs-a-ajouter-a-ardpylog-suite-10","status":"publish","type":"page","link":"https:\/\/www.ardpylab.fr\/?page_id=6525","title":{"rendered":"Des sketchs \u00e0 ajouter \u00e0 ArdPyLog (suite)"},"content":{"rendered":"\n


9. ADXL335 Grove<\/span><\/a><\/strong> (Mesurer des acc\u00e9l\u00e9rations sur les axes X\/Y\/Z<\/em> – Cat\u00e9gorie: <\/span>M\u00e9canique<\/strong><\/span>)

<\/span><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

 <\/p>\n

L’objectif de cette activit\u00e9 est de mesurer des acc\u00e9l\u00e9rations sur les axes X\/Y\/Z \u00e0 l’aide d’un acc\u00e9l\u00e9rom\u00e8tre Grove ADXL335.<\/p>\n

\"\"<\/p>\n

Bas\u00e9 sur le chip ADXL335, ce module va fournir trois tensions analogiques repr\u00e9sentative des 3 axes X, Y et Z. Chaque sortie analogique d\u00e9livre un signal entre 0V et 3V3 repr\u00e9sentative d’une acc\u00e9l\u00e9ration de -3G \u00e0 +3G. Pour simplifier, -3G correspond \u00e0 une tension de 0V, +3G \u00e0 une tension de 3,3V et donc 0G \u00e0 la moiti\u00e9 de la plage d’alimentation, soit 1,65V.<\/p>\n


Le code de l’activit\u00e9 n\u00e9cessite l’installation au pr\u00e9alable de la librairie \u00ab\u00a0Accelerometer ADXL335\u00a0\u00bb.
Afin d\u2019ajouter une librairie \u00e0 l\u2019IDE Arduino, il faut aller dans le menu \u00ab Outils ->G\u00e9rer les biblioth\u00e8ques \u00bb :<\/p>\n

\"\"<\/p>\n

Il suffit ensuite de rechercher et d\u2019ajouter la librairie \u00ab Accelerometer ADXL335 \u00bb :<\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

Le programme<\/span><\/p>\n

Voici le code de l\u2019activit\u00e9 :<\/p>\n\n\n\n
\n
 <\/div>\n
#include \u00ab\u00a0ADXL335.h\u00a0\u00bb<\/div>\n
 <\/div>\n
ADXL335 accelerometer;<\/div>\n
void setup()<\/div>\n
{<\/div>\n
Serial.begin(9600);<\/div>\n
accelerometer.begin();<\/div>\n
}<\/div>\n
void loop()<\/div>\n
{<\/div>\n
int x,y,z;<\/div>\n
accelerometer.getXYZ(&x,&y,&z);<\/div>\n
Serial.println(\u00ab\u00a0value of X\/Y\/Z: \u00ab\u00a0);<\/div>\n
Serial.println(x);<\/div>\n
Serial.println(y);<\/div>\n
Serial.println(z);<\/div>\n
float ax,ay,az;<\/div>\n
accelerometer.getAcceleration(&ax,&ay,&az);<\/div>\n
Serial.println(\u00ab\u00a0acceleration of X\/Y\/Z: \u00ab\u00a0);<\/div>\n
Serial.print(ax);<\/div>\n
Serial.println(\u00a0\u00bb g\u00a0\u00bb);<\/div>\n
Serial.print(ay);<\/div>\n
Serial.println(\u00a0\u00bb g\u00a0\u00bb);<\/div>\n
Serial.print(az);<\/div>\n
Serial.println(\u00a0\u00bb g\u00a0\u00bb);<\/div>\n
delay(300);<\/div>\n
}<\/div>\n
 <\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

D\u00e9roulement du programme<\/span> :<\/p>\n

\u2013 1. Insertion des biblioth\u00e8ques :<\/p>\n

. Insertion de la librairie \u00ab\u00a0ADXL335\u00a0\u00bb<\/strong><\/p>\n

 <\/p>\n

\u2013 2. D\u00e9claration des constantes et variables :<\/p>\n

. D\u00e9finition du type d\u2019acc\u00e9l\u00e9rom\u00e8tre<\/strong><\/p>\n

 <\/p>\n

\u2013 3. Initialisation des entr\u00e9es et sorties :<\/p>\n

. Initialisation de la liaison s\u00e9rie \u00e0 un d\u00e9bit de 9600 bauds<\/strong><\/p>\n

. Initialisation de l\u2019acc\u00e9l\u00e9rom\u00e8tre<\/strong><\/p>\n

 <\/p>\n

\u2013 4. Fonction principale en boucle :<\/p>\n

\u2013> Lecture des mesures de position et d\u2019acc\u00e9l\u00e9ration sur les axes X\/Y\/Z,<\/strong><\/p>\n

\u2013> Affichage des valeurs dans le moniteur s\u00e9rie,<\/strong><\/p>\n

\u2013> Une pause de 300 ms est ins\u00e9r\u00e9e entre 2 mesures.<\/strong><\/p>\n

 <\/p>\n\n\n

\n
\n\n
\"\"<\/a><\/figure>\n\n<\/div>\n\n
\n\n
\"\"<\/a><\/figure>\n\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

9. ADXL335 Grove (Mesurer des acc\u00e9l\u00e9rations sur les axes X\/Y\/Z – Cat\u00e9gorie: M\u00e9canique)   L’objectif de cette activit\u00e9 est de mesurer des acc\u00e9l\u00e9rations sur les axes X\/Y\/Z \u00e0 l’aide d’un acc\u00e9l\u00e9rom\u00e8tre Grove ADXL335. Bas\u00e9 sur le chip ADXL335, ce module va fournir trois tensions analogiques repr\u00e9sentative des 3 axes X, Y et Z. Chaque sortie analogique […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6525","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/6525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6525"}],"version-history":[{"count":8,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/6525\/revisions"}],"predecessor-version":[{"id":6562,"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=\/wp\/v2\/pages\/6525\/revisions\/6562"}],"wp:attachment":[{"href":"https:\/\/www.ardpylab.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}