| The GY-273 is basically a Honeywell HMC5883L chip (datasheet). Note: this is a 3 Vdc chip. You must install a level-shifter to connect to an Arduino. Since the power drawn is about 100 µA you can easily use the voltage shifter also as power supply. The I²C write address is 3C and the read address is 3D. A measurement takes about 6 ms. The DRDY pin is a status bit and tells you whether it is safe to read the compass value. Data Ready pin is internally pulled high but low for 250 μsec after fresh data is placed in the data output registers.
When powered on the GY-273 is in Single-Measurement Mode by default. In this mode you have the lowest power consumption but more software actions needed. Since the power consumption is only 100 µA most roboteers change the Mode to Continuous Measurement Mode during setup.
The last trick is how to calculate a heading from the data obtained by the compass module. diydrones.com.
Legacy: CMPS03
The CMPS03 (data-sheet) used to be the only compass offered until about around the turn of the millennium. It is still available (2016) but we don`t use it anymore. For robots this compass has several disadvantages. It is not tilt compensated and it is also rather expensive (€ 29,94). The I²C address of the CMPS03 compass module is C0 (sketch).
$val ){
$$key = stripslashes( $val );
}
$jaar = substr($changeddate,0,4);
$maand = substr($changeddate,5,2);
$dag = substr($changeddate,8,2);
$lastupdate = ("$jaar $maand $dag");
$prtsrttxt = get_txt($con1, 26, 1, $idsrtodd);
$jaar = substr($createddate,0,4);
$maand = substr($createddate,5,2);
$dag = substr($createddate,8,2);
$create_stamp = ("$dag $maand $jaar");
//GENERAL INFO FOR EVERY USER **************************************************
echo (" ");
echo ("| "); //Header
$tmp = get_txt($con1, 9, $koekje[2], 3923); //Fieldname at screen
if ($koekje[3]=="1") { //If this user wants to translate then
echo ("$tmp"); //If desired
}else{ echo ("$tmp"); } //Else just show if no need to translate
if ($koekje[0]>0 and $koekje[3]>0){ //User is logged in and translates
echo (" (edit)");
}
echo ("Algemene informatie test |
|---|
");
if ($codetext) { //Code like KY-026 or NA-41
echo ("| ");
$tmp = get_txt($con1, 9, $koekje[2], 3739); //Fieldname at screen
if ($koekje[3]=="1") { //If this user wants to translate then
echo ("$tmp"); //Class for colour
}else{ //So you are not allowed to translate
echo $tmp; //Show screenname of this field in user language
} //End of If you want to translate this fieldname at screen
echo (" | ");
if ($codelink) {
echo ("$codetext");
}else{
echo ("$codetext");
} //End of if ($pinoutlink)
echo (" | ");
} //End of if ($codetext)
$tmp = get_txt($con1, 9, $koekje[2], 3741); //Fieldname at screen
if ($prijseurinclbtw > 0){ //Show price indication
$prijs_formatted = number_format($prijseurinclbtw / 100, 2, ',', '.');
echo ("| $tmp | ");
echo ("");
if ($urlprijs){
echo ("€ $prijs_formatted");
}else{
echo ("€ $prijs_formatted");
} //End of if ($urlprijs > "")
echo (" | ");
} //End of if ($prijseurinclbtw > 0)
if ($sketchtext) { //Link to OWN SOFTWARE
$tmp = get_txt($con1, 9, $koekje[2], 3738); //Fieldname at screen
echo ("| $tmp | ");
if ($sketchlink) {
echo ("$sketchtext");
}else{
echo ("$sketchtext");
} //End of if ($sketchlink)
echo (" | ");
} //End of if ($sketchtext)
$tmp = get_txt($con1, 9, $koekje[2], 3744); //Fieldname at screen
if ($pinouttext) { //Pinout
echo ("| $tmp | ");
if ($pinoutlink) {
echo ("$pinouttext");
}else{
echo ("$pinouttext");
} //End of if ($pinoutlink)
echo (" | ");
}
$tmp = get_txt($con1, 9, 1, 3735); //Fieldname at screen
$tmp2 = get_txt($con1, 26, 1, $row4[16]); //Group name in its language
echo ("| $tmp | "); //MENU GROUP
echo ("");
echo ("$tmp2 | ");
if ($koekje[0]>0 and $koekje[3]>0){ //User is logged in and translates
$tmp = get_txt($con1, 9, $koekje[2], 3918); //Fieldname at screen LANGUAGE
if ($row4[26] == 1) {$imgname = "nederland.png";}
if ($row4[26] == 2) {$imgname = "deutschland.png";}
if ($row4[26] == 3) {$imgname = "uk.png";}
if ($row4[26] == 4) {$imgname = "france.png";}
echo ("| $tmp | ");
echo (" ");
echo (" | ");
$tmp = get_txt($con1, 9, $row4[27], 3919); //Fieldname at screen
$statuskey = get_status_key($con1, $status);
$tmp2 = get_txt($con1, 61, $koekje[2], $statuskey); //Fieldname at screen
echo ("| $tmp | "); //STATUS
echo ("$status $tmp2 | ");
}
$tmp = get_txt($con1, 9, 1, 3966); //Fieldname at screen
echo ("| $tmp | "); //LAST CHANGED
$tmp = substr($changeddate, 0, 10);
echo ("$tmp | ");
echo (" ");
return;
////////////////////////////////////////////////////////////////////////////////
function get_status_key($con, $num){
$qry = ("SELECT id FROM status WHERE nr = $num ;");
$result = pg_query($con, $qry);
$row = pg_fetch_array($result);
return ("$row[0]");
}
0
AND software.rstid = 2
AND tblsystext.lanid = $koekje[2]
AND tblsystext.txlid = 19
ORDER BY sftname ASC
, controller ASC
;");
$result = pg_query($con1, $qry2);
if (pg_num_rows($result)>0) { //Only if at least 1 program exists
echo (' ');
echo ("| "); //Header
$tmp = get_txt($con1, 9, $koekje[2], 3922); //Fieldname at screen
if ($koekje[3]=="1") { //If this user wants to translate then
echo ("$tmp"); //If desired
}else{ echo ("$tmp"); } //Else just show if no need to translate
echo (" |
|---|
");
while($col = pg_fetch_array($result)){
$col[0] = ("$col[0]");
echo (" ");
echo ("| $col[2] | ");
echo ("$col[0] | ");
if ($koekje[0] > 0 and $koekje[3]>0){ //User is logged in and translates
echo ("");
echo ("(Edit) | ");
}
echo (' ');
}
echo (' ');
}
?>
0){
if ($header == 0) {
echo ("");
echo ("| "); //Header
$tmp = get_txt($con1, 9, $koekje[2], 3879); //Fieldname at screen
if ($koekje[3]=="1") { //If this user wants to translate then
echo ("$tmp"); //If desired
}else{ echo ("$tmp"); } //Else just show if no need to translate
echo (" |
|---|
");
$header++;
} //End of if ($header == 0)
echo ("");
echo ("$colbpp[2]");
//Show software van deze bot
$qry=("SELECT software_basedir
FROM farmbotversie
WHERE id = $colbpp[0];");
$result = pg_query($con1, $qry);
$col = pg_fetch_array ($result ,0);
$dir1 = "/var/www/html/robotigs/software/$col[0]";
$arr1 = glob($dir1, GLOB_ONLYDIR);
if (isset($arr1[0])){
$folder = $arr1[0];
$countertmp = 0;
echo ("");
foreach (scandir($folder, 1) as $filename) {
if ($filename<>"." AND $filename <>".."){
if ($countertmp == 0){
$countertmp++;
} //End of if ($countertmp == 0)
$tmp = "/";
$dir = substr($folder, 14) ."/";
$link = $tmp .$dir .$filename;
$showname = substr($filename, 0 ,-4);
echo ("- ");
echo "$showname";
echo ("
");
} //End of if ($filename<>"." AND $filename <>".."){
} //End of foreach (scandir($folder, 1) as $filename)
echo ("");
} //End of if (isset($arr1[0]))
echo (" | ");
}
}
if ($header > 0){
echo (" ");
}
?>
Warning: include(/var/www/html/robotigs/includes/wishlistperpart.php): Failed to open stream: No such file or directory in /var/www/html/robotigs/includes/parts_header.php on line 128
Warning: include(): Failed opening '/var/www/html/robotigs/includes/wishlistperpart.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/robotigs/includes/parts_header.php on line 128
| ");
$counter = 0;
$aantal = str_word_count($pict_list, 0, "0123456789");
$lijst = str_word_count($pict_list, 1, "0123456789");
while($counter < $aantal){
$pictkey = $lijst[$counter];
$qryy1 = ("SELECT *
FROM illustrations
WHERE ill_id = $pictkey
;");
$resulty1 = pg_query($con1, $qryy1);
while($row = pg_fetch_array($resulty1)){ //Fields accesible by their name
foreach( $row AS $key => $val ){
$$key = stripslashes( $val );
}
}
$image = ("/robotigs/documentatie/plaatjes/$ill_name");
$pictfull = str_replace('_small', '', $image); //Pictfull=biggest version
$alt = ("Just wait till your 57....");
$txtname = get_txt($con1, 18, $koekje[2], $ill_id); //Robot illustrations subtitles
echo ("");
echo ('
');
$nummer = $counter + 1;
$txtAfb = get_txt($con1, 9, $koekje[2], 3865); //Pic Afb
if ($koekje[0]>0 and $koekje[3]>0){ //User is logged in and translates
echo ("$txtAfb $nummer: ");
echo ("$txtname");
echo ("
");
echo ("Ontkoppelen ");
if ($counter==0){
echo ("Up ");
}else{
echo ("Up ");
}
if ($nummer == $aantal){
echo ("Down");
}else{
echo ("Down");
}
}else{ //Else of if Meaning the current useer is logged in
echo ("$txtAfb $nummer: $txtname");
}
echo (''); //End of this picture
$counter++; //Prepair for next picture
}
echo (''); //All pictures are printed
} //End of if there are 1 or more pictures to be printed ----------------------
?>