Posted Without Comment
BN-880 GPS\Compass Module - The Compass
Let's tackle the compass module of the BN-880 Gps/Compass Module.
The Code:
#include <Arduino.h>
#include <Wire.h>
#include "HMC5883L_Simple.h"
#include <U8g2lib.h>
#include <SPI.h>
#include <TinyGPS++.h>
#include <SoftwareSerial.h>
// Create a compass
HMC5883L_Simple Compass;
// The TinyGPS++ object
TinyGPSPlus gps;
U8G2_ST7920_128X64_1_SW_SPI u8g2(U8G2_R0, 13, 11, 10, 8);
static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 9600;
char zs[32] = "";
int x = 0;
int y = 0;
// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);
void setup()
{
Serial.begin(115200);
ss.begin(GPSBaud);
Wire.begin();
u8g2.begin();
u8g2.clearBuffer();
// Magnetic Declination is the correction applied according to your present location
// in order to get True North from Magnetic North, it varies from place to place.
//
// The declination for your area can be obtained from http://www.magnetic-declination.com/
// Take the "Magnetic Declination" line that it gives you in the information,
//
// Examples:
// Christchurch, 23° 35' EAST
// Wellington , 22° 14' EAST
// Dunedin , 25° 8' EAST
// Auckland , 19° 30' EAST
//
Compass.SetDeclination(1, 40, 'E');
// The device can operate in SINGLE (default) or CONTINUOUS mode
// SINGLE simply means that it takes a reading when you request one
// CONTINUOUS means that it is always taking readings
// for most purposes, SINGLE is what you want.
Compass.SetSamplingMode(COMPASS_CONTINUOUS);
// The scale can be adjusted to one of several levels, you can probably leave it at the default.
// Essentially this controls how sensitive the device is.
// Options are 088, 130 (default), 190, 250, 400, 470, 560, 810
// Specify the option as COMPASS_SCALE_xxx
// Lower values are more sensitive, higher values are less sensitive.
// The default is probably just fine, it works for me. If it seems very noisy
// (jumping around), incrase the scale to a higher one.
Compass.SetScale(COMPASS_SCALE_400);
// The compass has 3 axes, but two of them must be close to parallel to the earth's surface to read it,
// (we do not compensate for tilt, that's a complicated thing) - just like a real compass has a floating
// needle you can imagine the digital compass does too.
//
// To allow you to mount the compass in different ways you can specify the orientation:
// COMPASS_HORIZONTAL_X_NORTH (default), the compass is oriented horizontally, top-side up. when pointing North the X silkscreen arrow will point North
// COMPASS_HORIZONTAL_Y_NORTH, top-side up, Y is the needle,when pointing North the Y silkscreen arrow will point North
// COMPASS_VERTICAL_X_EAST, vertically mounted (tall) looking at the top side, when facing North the X silkscreen arrow will point East
// COMPASS_VERTICAL_Y_WEST, vertically mounted (wide) looking at the top side, when facing North the Y silkscreen arrow will point West
Compass.SetOrientation(COMPASS_HORIZONTAL_X_NORTH);
}
// Our main program loop.
void loop()
{
u8g2.firstPage();
float heading = Compass.GetHeadingDegrees();
do {
u8g2.setFont(u8g2_font_squeezed_r6_tr);
printInt(5, 15, gps.satellites.value(), gps.satellites.isValid(), 5);
printFloat(5, 25, gps.location.lat(), gps.location.isValid(), 10, 7);
printFloat(5, 35, gps.location.lng(), gps.location.isValid(), 10, 7);
printFloat(5, 45, heading, 1, 6, 3);
printDateTime(5,55, gps.date, gps.time);
} while ( u8g2.nextPage() );
smartDelay(500);
Serial.print("Heading: \t");
Serial.println( heading );
delay(1000);
}
// This custom version of delay() ensures that the gps object
// is being "fed".
static void smartDelay(unsigned long ms)
{
unsigned long start = millis();
do
{
while (ss.available())
gps.encode(ss.read());
} while (millis() - start < ms);
}
static void printInt(int x, int y, unsigned long val, bool valid, int len)
{
char sz[32] = "*****************";
if (valid)
sprintf(sz, "%ld", val);
sz[len] = 0;
for (int i=strlen(sz); i<len; ++i)
sz[i] = ' ';
if (len > 0)
sz[len-1] = ' ';
u8g2.drawStr(x, y, "Sats: ");
u8g2.drawStr(x+17, y, sz);
smartDelay(0);
}
static void printFloat(int x, int y, float val, bool valid, int len, int prec)
{
if (!valid)
{
while (len-- > 1)
u8g2.drawStr(x, y, '*');
u8g2.drawStr(x, y, ' ');
}
else
{
dtostrf(val, len, prec, zs);
u8g2.drawStr(x, y, zs);
int vi = abs((int)val);
int flen = prec + (val < 0.0 ? 2 : 1); // . and -
flen += vi >= 1000 ? 4 : vi >= 100 ? 3 : vi >= 10 ? 2 : 1;
for (int i=flen; i<len; ++i)
u8g2.drawStr(x, y, ' ');
}
smartDelay(0);
}
static void printDateTime(int x, int y, TinyGPSDate &d, TinyGPSTime &t)
{
if (!d.isValid())
{
u8g2.drawStr(x, y, "Time: ********** ");
}
else
{
char sz[32];
sprintf(sz, "GMT Time: %02d/%02d/%02d : %02d:%02d:%02d", d.month(), d.day(), d.year(), t.hour(), t.minute(), t.second());
u8g2.drawStr(x, y, sz);
}
smartDelay(0);
}
γγγΎγ
Akaso V50 Pro - What's Up With it?
So, I finally got around to getting a memory card for this, I should've done it sooner. Oops.
Nothing against the company, I was being slow.
γγγΎγ
Genmitsu 3020 Pro Max by Sainsmart
Unboxing and build of my latest acquisition.
A Sainsmart Genmitsu 3020 - Pro Max
γγγΎγ
V50 Pro Unboxing
Unboxing a new camera to use on my Rumble/Youtube/Vimeo sites.
Burning Down Churches
The church, particularly in the west, is in big trouble.
How?
It is being destroyed from within.
Is this a case of our sinful nature taking over, and we are eating the organized church alive, or is this a case of "if you can't beat 'em, join 'em" and wolves have crept in with the purpose of destroying from within?
Or is it both?
Watch this, and form your own opinion.
My latest non - technical video.
Beitian BN-880 GPs and Compass Module Experiments - Part III - Tying It Up
So here it is, the schematic & code for the final assembly (well, final for now ;) )
A warning: the code is a quickly hashed together dog's breakfast of source. It works, but it's very ugly.
The GPS wiring is exactly the same as the first article, and the wiring for the GLCD
is exactly the same as the last article.
Here's the link to the video:
Here's the Source:
#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <Arduino.h>
#include <U8g2lib.h>
#include <SPI.h>
#include <Wire.h>
// Variables for the GPS module
static const int RXPin = 4, TXPin = 3;
static const uint32_t GPSBaud = 9600;
char zs[32] = "";
int x = 0;
int y = 0;
// The TinyGPS++ object
TinyGPSPlus gps;
// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);
U8G2_ST7920_128X64_1_SW_SPI u8g2(U8G2_R0, 13, 11, 10, 8);
void setup(void) {
ss.begin(GPSBaud);
u8g2.begin();
u8g2.clearBuffer();
}
void loop(void) {
u8g2.firstPage();
do {
u8g2.setFont(u8g2_font_squeezed_r6_tr);
printInt(5, 15, gps.satellites.value(), gps.satellites.isValid(), 5);
printFloat(5, 25, gps.location.lat(), gps.location.isValid(), 10, 7);
printFloat(5, 35, gps.location.lng(), gps.location.isValid(), 10, 7);
printDateTime(5,55, gps.date, gps.time);
} while ( u8g2.nextPage() );
smartDelay(500);
}
/*----------------------------------------------------------------------*/
/* All functions/subroutines are below this comment section */
/*----------------------------------------------------------------------*/
// This custom version of delay() ensures that the gps object
// is being "fed".
static void smartDelay(unsigned long ms)
{
unsigned long start = millis();
do
{
while (ss.available())
gps.encode(ss.read());
} while (millis() - start < ms);
}
static void printFloat(int x, int y, float val, bool valid, int len, int prec)
{
if (!valid)
{
while (len-- > 1)
u8g2.drawStr(x, y, '*');
u8g2.drawStr(x, y, ' ');
}
else
{
dtostrf(val, len, prec, zs);
u8g2.drawStr(x, y, zs);
int vi = abs((int)val);
int flen = prec + (val < 0.0 ? 2 : 1); // . and -
flen += vi >= 1000 ? 4 : vi >= 100 ? 3 : vi >= 10 ? 2 : 1;
for (int i=flen; i<len; ++i)
u8g2.drawStr(x, y, ' ');
}
smartDelay(0);
}
static void printInt(int x, int y, unsigned long val, bool valid, int len)
{
char sz[32] = "*****************";
if (valid)
sprintf(sz, "%ld", val);
sz[len] = 0;
for (int i=strlen(sz); i<len; ++i)
sz[i] = ' ';
if (len > 0)
sz[len-1] = ' ';
u8g2.drawStr(x, y, "Sats: ");
u8g2.drawStr(x+17, y, sz);
smartDelay(0);
}
static void printDateTime(int x, int y, TinyGPSDate &d, TinyGPSTime &t)
{
if (!d.isValid())
{
u8g2.drawStr(x, y, "Time: ********** ");
}
else
{
char sz[32];
sprintf(sz, "GMT Time: %02d/%02d/%02d : %02d:%02d:%02d", d.month(), d.day(), d.year(), t.hour(), t.minute(), t.second());
u8g2.drawStr(x, y, sz);
}
smartDelay(0);
}
Like I said: It's ugly.
γγγΎγ
Beitian BN-880 GPs and Compass Module Experiments - Part II
Here is the wiring diagram:
I haven't added the BN-880
to this conglomeration yet,
but will do that in the next post.
Here is the code:
#include <Arduino.h>
#include <U8g2lib.h>
#ifdef U8X8_HAVE_HW_SPI
#include <SPI.h>
#endif
#ifdef U8X8_HAVE_HW_I2C
#include <Wire.h>
#endif
// 'TheOffice', 128x64px
static const unsigned char myBitmap [] PROGMEM = {
0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x3f, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x06, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc7,
0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x9f, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb8, 0x03, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb0,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x3e, 0x00, 0x00, 0x00, 0x00, 0xb0,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x3f, 0x00,
0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x80, 0x7f, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0x80, 0x7f, 0x00, 0x00, 0x00, 0x00, 0xb0,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x80, 0x7f, 0x00,
0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x00, 0xb0,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0xc0, 0x7f, 0x00,
0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0xf0, 0xff, 0x03, 0x00, 0x00, 0x00, 0xb0, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0xf8, 0xff, 0x07, 0x00, 0x00, 0x7c, 0xb0,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0xf8, 0xff, 0x07,
0x00, 0x00, 0xfe, 0xb0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0xf8, 0xff, 0x07, 0x00, 0x00, 0xfe, 0xb0, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0xf8, 0xff, 0x07, 0x00, 0x00, 0xfe, 0xb0,
0x81, 0xff, 0x1d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0xf8, 0xff, 0x0f,
0x00, 0x00, 0xfe, 0xb0, 0x81, 0xff, 0x1d, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0xf8, 0xff, 0x0f, 0x00, 0x00, 0xfe, 0xb0, 0x81, 0xff, 0x1d, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0xfc, 0xff, 0x0f, 0x00, 0x00, 0xfe, 0xb0,
0x01, 0x38, 0xdc, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x08, 0xfc, 0xff, 0x0f,
0x00, 0x00, 0x7c, 0xb0, 0x01, 0x38, 0xfc, 0xf3, 0x03, 0x00, 0x00, 0x00,
0x08, 0xfc, 0xff, 0x0f, 0x00, 0x00, 0x38, 0xb0, 0x01, 0x38, 0xfc, 0xfb,
0x07, 0x00, 0x00, 0x00, 0x08, 0xfc, 0xff, 0x0f, 0x00, 0x00, 0xfc, 0xb0,
0x01, 0x38, 0x9c, 0x3b, 0x07, 0x00, 0x00, 0x00, 0x08, 0xfc, 0xff, 0x07,
0x00, 0x00, 0xfe, 0xb0, 0x01, 0x38, 0x9c, 0xfb, 0x07, 0x00, 0x00, 0x00,
0x08, 0xfc, 0xff, 0x07, 0x00, 0x00, 0xfe, 0xb7, 0x01, 0x38, 0x9c, 0xfb,
0x07, 0x00, 0x00, 0x00, 0x08, 0xfc, 0xff, 0x07, 0x00, 0x00, 0xfe, 0xb7,
0x01, 0x38, 0x9c, 0x3b, 0x07, 0x00, 0x00, 0x00, 0x08, 0xfc, 0xff, 0x07,
0x00, 0x00, 0xfe, 0xb7, 0x01, 0x38, 0x9c, 0xfb, 0x07, 0x00, 0x00, 0x00,
0x08, 0xfe, 0xff, 0x07, 0x00, 0x00, 0xff, 0xb7, 0x01, 0x38, 0x9c, 0xf3,
0x03, 0x00, 0x00, 0x00, 0x08, 0xfe, 0xff, 0x07, 0x00, 0x80, 0xff, 0xb7,
0x01, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff, 0x00,
0x00, 0xc0, 0xff, 0xb6, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xc8, 0xff, 0xff, 0x00, 0x00, 0xe0, 0xff, 0xb6, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff, 0x00, 0x00, 0xfe, 0xff, 0xb6,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff, 0x00,
0xc0, 0xff, 0xff, 0xb6, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xc8, 0xff, 0xff, 0x00, 0xe0, 0xff, 0xff, 0xb6, 0x01, 0xf8, 0x07, 0xbe,
0xff, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff, 0x00, 0xe0, 0x7f, 0xff, 0xb7,
0x01, 0xfc, 0x1f, 0xbf, 0xff, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff, 0xfc,
0xff, 0x0f, 0xff, 0xb7, 0x01, 0xfe, 0x1f, 0xbf, 0xff, 0x00, 0x00, 0x00,
0xc8, 0xff, 0xff, 0xfc, 0xff, 0xef, 0xff, 0xb7, 0x01, 0x1f, 0x3e, 0x8f,
0x03, 0x00, 0x00, 0x00, 0xc8, 0xff, 0xff, 0xc0, 0x01, 0xfe, 0xff, 0xb7,
0x01, 0x0f, 0xbc, 0xff, 0xef, 0xf0, 0x87, 0x1f, 0xc8, 0xff, 0xff, 0xc0,
0x01, 0xff, 0xff, 0xb7, 0x01, 0x0f, 0xbc, 0xff, 0xef, 0xf8, 0xcf, 0x3f,
0xc8, 0xff, 0xff, 0xc0, 0x01, 0xff, 0xff, 0xb7, 0x01, 0x0f, 0xb8, 0xff,
0xef, 0xfc, 0xef, 0x3f, 0xc8, 0xff, 0xff, 0xc0, 0x01, 0xff, 0x7f, 0xb7,
0x01, 0x0f, 0x38, 0x8f, 0xe3, 0x3c, 0xef, 0x79, 0x08, 0xc0, 0x7f, 0xc0,
0x81, 0xff, 0x1f, 0xb7, 0x01, 0x0f, 0x3c, 0x8f, 0xe3, 0x3c, 0xe0, 0x7f,
0x08, 0xc0, 0x7f, 0xc0, 0x81, 0xef, 0xff, 0xb7, 0x01, 0x0f, 0x3c, 0x8f,
0xe3, 0x1c, 0xe0, 0x7f, 0x08, 0xc0, 0x7f, 0xc0, 0x81, 0xef, 0xff, 0xb7,
0x01, 0x1f, 0x3c, 0x8f, 0xe3, 0x3c, 0xe6, 0x7f, 0x08, 0xc0, 0x7f, 0xc0,
0x81, 0xe7, 0xff, 0xb7, 0x01, 0x3e, 0x3e, 0x8f, 0xe3, 0x3c, 0xef, 0x79,
0x08, 0x80, 0x7b, 0xc0, 0xc1, 0x67, 0x00, 0xb7, 0x01, 0xfe, 0x1f, 0x8f,
0xe3, 0xfc, 0xef, 0x7f, 0x08, 0x80, 0x33, 0xc0, 0xc1, 0x67, 0x00, 0xb7,
0x01, 0xfc, 0x0f, 0x8f, 0xe3, 0xf8, 0xcf, 0x3f, 0x08, 0x00, 0x00, 0xc0,
0xc1, 0x67, 0x00, 0xb7, 0x01, 0xf8, 0x07, 0x8f, 0xe3, 0xf0, 0xc7, 0x1f,
0x08, 0x00, 0x00, 0xc0, 0xe1, 0x63, 0x00, 0xb7, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0xc0, 0xe1, 0x63, 0x00, 0xb7,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0xc0,
0xe1, 0x61, 0x00, 0xb7, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0xc0, 0xe1, 0x61, 0x00, 0xb7, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0xc0, 0xe1, 0x61, 0x00, 0xb7,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0xc0,
0xe1, 0x60, 0x00, 0xb2, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb0, 0x03, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xb0,
0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xbc, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xcf, 0x06, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0,
0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x7f
};
U8G2_ST7920_128X64_F_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* CS=*/ 10, /* reset=*/ 8);
void draw(void)
{
u8g2.drawXBMP( 0, 0, 128, 64, myBitmap);
}
void setup()
{
// put your setup code here, to run once:
u8g2.begin();
u8g2.clearBuffer();
}
void loop()
{
// put your main code here, to run repeatedly:
u8g2.firstPage();
do
{
draw();
}while(u8g2.nextPage());
delay(1000);
}I scavenged this code from here:
Interface as 128c64 GLCD with an arduino
Here is a link to my Vlog:
Enjoy!
γγγΎγ
Perelandra - C.S. Lewis - A New Eden, A New Adam, A New Eve, Same Old Serpent.
Decided to have a go at making an image with A.I.
This was generated by deepai.It represents Tinidril.



