Inaki Iturriaga
ARGENTINA • + Follow
Components
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18650 Battery. |
x 1 | |
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18650 Holder |
x 1 | |
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ATTiny85 |
x 1 | |
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0.96 |
x 1 | |
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NEO-6M GPS Module |
x 1 | |
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Pushbutton |
x 1 | |
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3.7v to 5v Step Up Module. |
x 1 |
Tools, APP Software Used etc.
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Soldering Iron Kit |
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arduino IDEArduino
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Description
Handheld GPS
Within the swiftly advancing realm of portable technology and travel essentials, innovation often shines a light on more personalized and enhanced experiences. Introducing the "Handheld GPS", a sleek and reliable real-time location assistant. At its core is the remarkable ATTiny85 microcontroller, coupled seamlessly with the precise NEO6M GPS module. Its mission? Deliver real-time location and time at the simple push of a button – a true companion for wanderers and tech enthusiasts alike.
Disclaimer:
The "Handheld GPS" is crafted with tech hobbyists and DIY navigation buffs in mind. It's imperative to understand both its assets and limitations. Always adhere to safety protocols during both assembly and utilization to avert potential mishaps.
Potential Applications:
- Traveler's Companion: Trekking mountains, strolling in unfamiliar cities, or biking trails, the "Handheld GPS" becomes your guide.
- Swift Locator: In emergencies or unexpected situations, quickly determine and share your exact coordinates.
- Learning Device: An engaging way for educators and students to delve into GPS technology and the wonders of microcontrollers.
Building Guide - The Handheld GPS:
Gather the Necessary Tools and Materials:
- ATTiny85 microcontroller
- NEO6M GPS module
- 0.96" OLED Display (I2C compatible)
- Pushbutton
- 18650 Battery and holder
- Step-up module (to elevate 3.7V to 5V)
- PCB (for permanent assembly)
- Soldering iron, solder, flux
- Tweezers or small pliers
Assembly:
- Organize Your Workspace: Choose a clean, adequately lit workspace, ensuring it's devoid of unnecessary distractions.
- Position the ATTiny85: Begin by placing the ATTiny85 on your PCB, ensuring the pins are correctly oriented.
- Integrate the NEO6M GPS Module: Solder the NEO6M's TX to pin 1 of the ATTiny85.
- Attach the OLED Display: Carefully solder the OLED's I2C SDA and SCL pins to the designated pins on the ATTiny85.
- Set Up the Push Button: Solder one terminal of the button to pin 4 of the ATTiny85 and the other to the ground.
- Manage Power Efficiently: Affix the 18650 battery to its holder, then solder the holder to the step-up module's input. After verifying a 5V output, solder the VCC and GND to the ATTiny85 and other components.
- Programming the ATTiny85:
- To infuse life into the "Handheld GPS", upload the designated code to the ATTiny85. This code will process the GPS module's data, project it onto the OLED, and regulate the button interactions. Confirm your environment is aptly set up for programming the ATTiny85, be it through the Arduino IDE or another favored platform.
Conclusion:
The "Handheld GPS" embodies the harmonious fusion of DIY tenacity and modern technology, gifting users with an intimate, navigational marvel. As you commence this assembly journey, embrace the fusion of imagination, technical prowess, and precise components to create awe-inspiring devices.
Code
Code
Arduino
#include <TinyGPS++.h>
#include <TinyWireM.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &TinyWireM);
TinyGPSPlus gps;
#define BUTTON_PIN 4
#define GPS_RX_PIN 1
bool showTime = false;
void setup() {
TinyWireM.begin();
display.begin(SSD1306_I2C_ADDRESS, SCREEN_RESET);
display.display();
delay(2000);
display.clearDisplay();
pinMode(GPS_RX_PIN, INPUT);
pinMode(BUTTON_PIN, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), toggleDisplayMode, FALLING);
}
void toggleDisplayMode() {
showTime = !showTime;
}
void loop() {
while (Serial.available() > 0) {
if (gps.encode(Serial.read())) {
updateDisplay();
}
}
}
void updateDisplay() {
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(SSD1306_WHITE);
if (showTime) {
display.setCursor(0, 0);
display.print("TIME:");
if (gps.time.isValid()) {
display.setCursor(0, 15);
display.print(gps.time.hour());
display.print(":");
display.print(gps.time.minute());
display.print(":");
display.print(gps.time.second());
} else {
display.setCursor(0, 15);
display.print("No time data");
}
} else {
display.setCursor(0, 0);
display.print("LAT:");
display.setCursor(0, 15);
display.print(gps.location.lat(), 6);
display.setCursor(0, 30);
display.print("LON:");
display.setCursor(0, 45);
display.print(gps.location.lng(), 6);
}
display.display();
}
CAD-Custom parts and enclosures
Part1
cajag1.stl
Part2
cajag2.stl
Part3
cajag3.stl
Sep 15,2023
812 views
Handheld GPS
Handheld GPS: Pocket-sized navigator with real-time location and time, powered by a lasting 18650 battery.
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Published: Sep 15,2023
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