├── .gitignore ├── LICENSE ├── README.md ├── TTGO-T-Beam-Car-Tracker.ino ├── config.h ├── gps.cpp ├── gps.h └── images ├── a6-gsm-gprs-dev-board.jpg ├── bmp280-2.png ├── bmp280.jpg ├── cayenne-data-fields.png ├── cayenne.png ├── cayenne2.png ├── pinmap.png ├── proto1.jpg ├── proto2.jpg ├── ttgo-t-beam.jpg └── ttn-keys.png /.gitignore: -------------------------------------------------------------------------------- 1 | # Prerequisites 2 | *.d 3 | 4 | # Object files 5 | *.o 6 | *.ko 7 | *.obj 8 | *.elf 9 | 10 | # Linker output 11 | *.ilk 12 | *.map 13 | *.exp 14 | 15 | # Precompiled Headers 16 | *.gch 17 | *.pch 18 | 19 | # Libraries 20 | *.lib 21 | *.a 22 | *.la 23 | *.lo 24 | 25 | # Shared objects (inc. Windows DLLs) 26 | *.dll 27 | *.so 28 | *.so.* 29 | *.dylib 30 | 31 | # Executables 32 | *.exe 33 | *.out 34 | *.app 35 | *.i*86 36 | *.x86_64 37 | *.hex 38 | 39 | # Debug files 40 | *.dSYM/ 41 | *.su 42 | *.idb 43 | *.pdb 44 | 45 | # Kernel Module Compile Results 46 | *.mod* 47 | *.cmd 48 | .tmp_versions/ 49 | modules.order 50 | Module.symvers 51 | Mkfile.old 52 | dkms.conf 53 | 54 | # Configuration for LoRaWAN TTN 55 | config.h 56 | /config.h 57 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | > This project is no longer maintenaned. 2 | 3 | # 🚘 Car GPS tracker with TTGO-T-Beam 4 | ![](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Flag_of_Slovakia.svg/30px-Flag_of_Slovakia.svg.png) ![](https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Flag_of_the_Czech_Republic.svg/30px-Flag_of_the_Czech_Republic.svg.png) 5 | ### ESP32 + GPS + LoRa + GSM (optional) 6 | 7 | This is an Arduino project for the **[TTGO T-Beam](https://github.com/LilyGO/TTGO-T-Beam)** ESP32 development board, which has LoRa chip onboard. 8 | **Cayenne** backend provides very nice web visualization, and also provides free Android/iPhone apps, where you can watch your car's position and indoor climate. 9 | This project uses [Cayenne Low Power Payload](https://community.mydevices.com/t/cayenne-lpp-2-0/7510) packet format to transfer GPS coordinates and some car's indoor climate data. 10 | It has adaptive packet rate, meaning that when the car moves, tracker starts to 'burst' sending packets to update the trajectory as precise as possible. 11 | The **myDevices [Cayenne for LoRa](https://mydevices.com/cayenne/lora/)** connection is made through [The Things Network](https://www.thethingsnetwork.org/) LoRaWAN cloud. 12 | 13 | You can find docs about Cayenne Low Power Payload (LPP) [here](https://mydevices.com/cayenne/docs/lora/#lora-cayenne-low-power-payload). 14 | 15 | I'll try to describe whole project setup as best I can. 16 | 17 | ## 1. Backend setup 18 | 19 | 1. If you don't already have it, [set up The Things Network account](https://account.thethingsnetwork.org/register) 20 | 2. Create new Application in TTN [Applications Console](https://console.thethingsnetwork.org/applications) 21 | 3. Add a new device for your new TTN application and select **ABP Activation Method** 22 | 4. Insert **Network Session Key**, **App Session Key** and **Device Address** to file `config.h` in Arduino project 23 | 5. Upload sketch to your board, you can program the T-Beam using the [Arduino ESP32](https://github.com/espressif/arduino-esp32) board `Heltec_WIFI_LoRa_32` 24 | 6. In your TTN application, in section **Payload formats** select `Cayenne LPP` 25 | 7. In **Integrations** section, select `Cayenne` 26 | 8. Fill **Process ID** (choose any name you prefer), select **Default Access Key** and click on **Add integration** 27 | 9. [Log in to myDevices Cayenne](https://cayenne.mydevices.com/), on the top click on `+` and enter project name 28 | 10. Click on **Add new** -> **Device/Widget** -> **LoRa** -> **The Things Network** -> **Cayenne LPP** 29 | 11. Choose your **Name** and fill out **DevEUI** (copy **Device EUI** from [TTN Console](https://console.thethingsnetwork.org/)). Then select **Activation Mode** -> **Already Registered**, **Tracking** -> **This device moves**. Click **Add device**. 30 | 12. If your tracker already sent any data to TTN, you'll see bunch of data fields. You can drag them to your Cayenne project. 31 | 13. Install the **Cayenne** mobile app to your Android/iPhone. 32 | 33 | #### That's it 😃 34 | 35 | ### Cayenne Screenshot 36 | 37 | This is how it will look like when data is received by TTN and Cayenne. 38 | 39 | ![Cayenne Tracker screenshot](images/cayenne2.png) 40 | 41 | ### Cayenne data fields 42 | 43 | - After these steps, you will see these data fields in Cayenne Dashboard: 44 | 45 | ![Cayenne data fields sent by Tracker](images/cayenne-data-fields.png) 46 | 47 | > Note: In GPS field, there is also **GPS altitude** information available. 48 | 49 | Optional fields, you can choose to send them in the program: 50 | 51 | - **Analog Input (5)**: Battery voltage (in volts) 52 | - **Analog Input (6)**: If tracker is moving, this field is **GPS speed**, in km/h 53 | - **Analog Input (7)**: Number of **satellites**, that the GPS module currently 'sees' 54 | - **Analog Input (8)**: Approximate tracker's **altitude** calculated from barometric air pressure 55 | 56 | ## 2. Wiring 57 | 58 | ⚠️ You need to connect the [T-Beam](https://github.com/LilyGO/TTGO-T-Beam) `LoRa DIO1` pin marked as `Lora1` to the **pin 33** - So that the ESP32 can read that output from the Lora module. 59 | Optionally you can also connect the `Lora2` output to `GPIO 32`, but this is not needed here. 60 | 61 | Connect the BME/BMP280 module's `SDA` line to pin `21` and `SCL` to pin `22` on the TTGO. 62 | If you want a more reliable data line (if the wires are long for some reason), you can add **pull-up resistors** on SDA and SCL lines. 63 | Any value from 2.2k to 10k should be OK. 64 | `VCC` of the module to `3V3` and `GND` to `GND` of course. 65 | 66 | ## 3. Libraries needed 67 | 68 | - [ESP32 Core for Arduino](https://github.com/espressif/arduino-esp32/blob/master/docs/arduino-ide/boards_manager.md) (installation with Boards Manager) 69 | - [TinyGPS++](https://github.com/mikalhart/TinyGPSPlus) 70 | - [CayenneLPP](https://github.com/sabas1080/CayenneLPP) 71 | - [BME280-I2C-ESP32](https://github.com/Takatsuki0204/BME280-I2C-ESP32) 72 | - Delete / uninstall original Adafruit BME280 library after installing this, otherwise it will cause conflicts! 73 | - [Arduino-LMIC](https://github.com/matthijskooijman/arduino-lmic) 74 | 75 | 76 | ### Update `config.h` 77 | 78 | If you haven't already, update with your own [TTN keys](https://www.thethingsnetwork.org/docs/devices/registration.html) - **ABP authentication** 79 | 80 | ##### TTN Keys 81 | 82 | These are the keys you will need from the TTN console (marked yellow). 83 | 84 | ![TTN Keys](images/ttn-keys.png) 85 | 86 | # Hardware 87 | 88 | - **TTGO-T-Beam** 89 | - ESP32 + GPS + LoRa 90 | 91 | ![TTGO-T-Beam](images/ttgo-t-beam.jpg) 92 | 93 | - **A6 GSM/GPRS module** (work in progress, not yet implemented!) 94 | - For places without LoRaWAN coverage - sends a link to Google Maps position via an SMS 95 | 96 | ![A6 GSM/GPRS](images/a6-gsm-gprs-dev-board.jpg) 97 | 98 | - **BME/BMP280 module** 99 | - For temperature, humidity, and atmospheric pressure reporting 100 | - Fully implemented and working with the sketch 101 | 102 | ![BME/BMP280 module](images/bmp280.jpg) 103 | ![BMP280](images/bmp280-2.png) 104 | 105 | ## Reference 106 | 107 | ### TTGO-T-Beam Specifications 108 | ``` 109 | ESP32 110 | ESP32 Version REV1 111 | WiFi 112 | Bluetooth 113 | 4MB Flash 114 | 3D Antenna 115 | 116 | LORA 117 | Working voltage: 1.8 ~ 3.7v 118 | Acceptable current: 10 ~ 14mA 119 | Transmit current: 120mA @ +20dBm 120 | 90mA @ +17dBm 121 | 29mA @ +13dBm 122 | Operating frequency: 433MHz / 868MHz / 915MHz 123 | Transmit power: +20dBm 124 | Receive sensitivity: -139dBm @ LoRa & 62.5 KHz & SF=12 & 146bps 125 | -136dBm @ LoRa & 125 KHz & SF=12 & 293bps 126 | -118dBm @ LoRa & 125 KHz & SF=6 & 9380bps 127 | -123dBm @ FSK & 5 KHz & 1.2Kbps 128 | Frequency error: +/-15KHz 129 | FIFO space: 64 byte 130 | Data rate: 1.2K ~ 300Kbps @ FSK 131 | 0.018K ~ 37.5Kbps @ LoRa 132 | Modulation Mode: FSK, GFSK, MSK, GMSK, LoRa TM, OOK 133 | Interface form: SPI 134 | Sleep current: 0.2uA @ SLEEP 135 | 1.5uA @ IDLE 136 | Operating temperature: -40? - +85? 137 | Digital RSSI function 138 | Automatic frequency correction 139 | Automatic gain control 140 | RF wake-up function 141 | Low voltage detection and temperature sensor 142 | Fast wake-up and frequency hopping 143 | Highly configurable data packet handler 144 | 145 | GPS 146 | GPS modules NEO-6M, 3V-5V power supply Universal 147 | Destined module with ceramic antenna, signal super 148 | Save the configuration parameter data EEPROM Down 149 | With data backup battery 150 | There are LED signal indicator 151 | Default Baud Rate: 9600 152 | 153 | Power 154 | IP5306 2A Battery PMIC 155 | LED, Blue - User controller 156 | LED, Red - GPS 1PPS 157 | LED, Red/green - battery charged/power on 158 | Button, reset switch 159 | Button, user readable 160 | Switch, power on/battery charge 161 | USB 162 | CP2104-GMR 163 | ``` 164 | 165 | ### TTGO T-Beam Pin Map 166 | 167 | ![TTGO Pin map](images/pinmap.png) 168 | 169 | ### First prototype 170 | 171 | ![Prototype Car Tracker 1](images/proto1.jpg) 172 | ![Prototype Car Tracker 2](images/proto2.jpg) 173 | 174 | ## TODO 175 | 176 | - A6 GSM module is not yet implemented 177 | - I'll be adding this "backup" comms feature someday 178 | - Add serial terminal console via WiFi AP 179 | - To watch output & debug messages (Websockets?) 180 | 181 | ## Further improvement 182 | 183 | You are welcome to contribute to this project in any way. (Submit an issue, bug report, fork and improve...) 184 | Suggestions & feedback is much appreciated. 185 | 186 | ## Credits 187 | 188 | - Thanks to [DeuxVis](https://github.com/DeuxVis) for his [Lora-TTNMapper-T-Beam](https://github.com/DeuxVis/Lora-TTNMapper-T-Beam) which came as an inspiration for this project 189 | - Huge thanks goes to my beloved wife for helping me to buy us a new car 😃 I love you Evka.❤️ -------------------------------------------------------------------------------- /TTGO-T-Beam-Car-Tracker.ino: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | 9 | // UPDATE the config.h file in the same folder WITH YOUR TTN KEYS AND ADDR. 10 | // LMIC library will complain that it couldn't initialize the module without these keys 11 | #include "config.h" 12 | #include "gps.h" 13 | 14 | #define DEBUG 1 // for real use comment this out 15 | #define I2C_SDA 21 // SDA1 16 | #define I2C_SCL 22 // SCL1 17 | #define SEALEVELPRESSURE_HPA (1013.25) // this should be set according to the weather forecast 18 | #define BME280_ADDRESS 0x76 // you can use I2C scanner demo to find your BME280 I2C address 19 | #define BUILTIN_LED 14 // T-Beam blue LED, see: http://tinymicros.com/wiki/TTGO_T-Beam 20 | #define BATTERY_PIN 35 // battery level measurement pin, here is the voltage divider connected 21 | 22 | CayenneLPP lpp(51); // here we will construct Cayenne Low Power Payload (LPP) - see https://community.mydevices.com/t/cayenne-lpp-2-0/7510 23 | gps gps; // class that is encapsulating additional GPS functionality 24 | Adafruit_BME280 bme(I2C_SDA, I2C_SCL); // these pins are defined above 25 | 26 | double lat, lon, alt, kmph; // GPS data are saved here: Latitude, Longitude, Altitude, Speed in km/h 27 | float tmp, hum, pressure, alt_barometric; // BME280 data are saved here: Temperature, Humidity, Pressure, Altitude calculated from atmospheric pressure 28 | int sats; // GPS satellite count 29 | char s[32]; // used to sprintf for Serial output 30 | bool status; // status after reading from BME280 31 | float vBat; // battery voltage 32 | long nextPacketTime; 33 | 34 | // These callbacks are only used in over-the-air activation, so they are 35 | // left empty here (we cannot leave them out completely unless 36 | // DISABLE_JOIN is set in config.h, otherwise the linker will complain). 37 | void os_getArtEui (u1_t* buf) { } 38 | void os_getDevEui (u1_t* buf) { } 39 | void os_getDevKey (u1_t* buf) { } 40 | 41 | static osjob_t sendjob; // callback to LoRa send packet 42 | void getBME280Values(void); // declaration for function below 43 | void do_send(osjob_t* j); // declaration of send function 44 | 45 | 46 | // Schedule TX every this many seconds (might become longer due to duty cycle limitations). 47 | #ifdef DEBUG 48 | const unsigned int TX_INTERVAL = 480; 49 | #elif 50 | const unsigned int TX_INTERVAL = 120; 51 | #endif 52 | 53 | const unsigned int GPS_FIX_RETRY_DELAY = 10; // wait this many seconds when no GPS fix is received to retry 54 | const unsigned int SHORT_TX_INTERVAL = 20; // when driving, send packets every SHORT_TX_INTERVAL seconds 55 | const double MOVING_KMPH = 10.0; // if speed in km/h is higher than MOVING_HMPH, we assume that car is moving 56 | 57 | // Pin mapping 58 | const lmic_pinmap lmic_pins = { 59 | .nss = 18, 60 | .rxtx = LMIC_UNUSED_PIN, 61 | .rst = 23, 62 | .dio = {26, 33, 32}, // PIN 33 HAS TO BE PHYSICALLY CONNECTED TO PIN Lora1 OF TTGO 63 | }; // the second connection from Lora2 to pin 32 is not necessary 64 | 65 | 66 | void getBatteryVoltage() { 67 | // we've set 10-bit ADC resolution 2^10=1024 and voltage divider makes it half of maximum readable value (which is 3.3V) 68 | vBat = analogRead(BATTERY_PIN) * 2.0 * (3.3 / 1024.0); 69 | Serial.print("Battery voltage: "); 70 | Serial.print(vBat); 71 | Serial.println("V"); 72 | } 73 | 74 | void getBME280Values() { 75 | 76 | if (!status) { // we don't have BME280 connection, clear the values and exit 77 | tmp = 0.0f; 78 | pressure = 0.0f; 79 | alt_barometric = 0.0f; 80 | hum = 0.0f; 81 | return; 82 | } 83 | 84 | tmp = bme.readTemperature(); 85 | pressure = bme.readPressure() / 100.0F; 86 | alt_barometric = bme.readAltitude(SEALEVELPRESSURE_HPA); 87 | hum = bme.readHumidity(); 88 | 89 | Serial.print(F("Temperature = ")); 90 | Serial.print(tmp); 91 | Serial.print("C, "); 92 | Serial.print("Pressure = "); 93 | Serial.print(pressure); 94 | Serial.print("hPa, "); 95 | Serial.print("Approx. Altitude = "); 96 | Serial.print(alt_barometric); 97 | Serial.print("m, "); 98 | Serial.print("Humidity = "); 99 | Serial.print(hum); 100 | Serial.println("%"); 101 | 102 | delay(100); 103 | } 104 | 105 | 106 | void onEvent (ev_t ev) { 107 | switch (ev) { 108 | case EV_SCAN_TIMEOUT: 109 | Serial.println(F("EV_SCAN_TIMEOUT")); 110 | break; 111 | case EV_BEACON_FOUND: 112 | Serial.println(F("EV_BEACON_FOUND")); 113 | break; 114 | case EV_BEACON_MISSED: 115 | Serial.println(F("EV_BEACON_MISSED")); 116 | break; 117 | case EV_BEACON_TRACKED: 118 | Serial.println(F("EV_BEACON_TRACKED")); 119 | break; 120 | case EV_JOINING: 121 | Serial.println(F("EV_JOINING. If program stops here, set correct LoRaWAN keys in config.h!")); 122 | break; 123 | case EV_JOINED: 124 | Serial.println(F("EV_JOINED")); 125 | // Disable link check validation (automatically enabled 126 | // during join, but not supported by TTN at this time). 127 | LMIC_setLinkCheckMode(0); 128 | break; 129 | case EV_RFU1: 130 | Serial.println(F("EV_RFU1")); 131 | break; 132 | case EV_JOIN_FAILED: 133 | Serial.println(F("EV_JOIN_FAILED")); 134 | break; 135 | case EV_REJOIN_FAILED: 136 | Serial.println(F("EV_REJOIN_FAILED")); 137 | break; 138 | case EV_TXCOMPLETE: 139 | Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)")); 140 | digitalWrite(BUILTIN_LED, LOW); 141 | if (LMIC.txrxFlags & TXRX_ACK) { 142 | Serial.println(F("Yup, received ACK!")); 143 | } 144 | if (LMIC.dataLen) { 145 | sprintf(s, "Yeey! Received %i bytes of payload!", LMIC.dataLen); 146 | Serial.println(s); 147 | sprintf(s, "RSSI %d SNR %.1d", LMIC.rssi, LMIC.snr); 148 | Serial.println(s); 149 | } 150 | // Schedule next transmission 151 | nextPacketTime = (kmph > MOVING_KMPH ? SHORT_TX_INTERVAL : TX_INTERVAL); // depend on current GPS speed 152 | os_setTimedCallback(&sendjob, os_getTime() + sec2osticks(nextPacketTime), do_send); 153 | Serial.print(F("Next LoRa packet scheduled in ")); 154 | Serial.print(nextPacketTime); 155 | Serial.println(F(" seconds!")); 156 | Serial.println(F("------------------------------------------------")); 157 | break; 158 | case EV_LOST_TSYNC: 159 | Serial.println(F("EV_LOST_TSYNC")); 160 | break; 161 | case EV_RESET: 162 | Serial.println(F("EV_RESET")); 163 | break; 164 | case EV_RXCOMPLETE: 165 | // data received in ping slot 166 | Serial.println(F("EV_RXCOMPLETE")); 167 | break; 168 | case EV_LINK_DEAD: 169 | Serial.println(F("EV_LINK_DEAD")); 170 | break; 171 | case EV_LINK_ALIVE: 172 | Serial.println(F("EV_LINK_ALIVE")); 173 | break; 174 | default: 175 | Serial.println(F("Unknown event")); 176 | break; 177 | } 178 | } 179 | 180 | void do_send(osjob_t* j) { 181 | 182 | getBatteryVoltage(); 183 | getBME280Values(); 184 | 185 | // Check if there is not a current TX/RX job running 186 | if (LMIC.opmode & OP_TXRXPEND) 187 | { 188 | Serial.println(F("OP_TXRXPEND, not sending")); 189 | } 190 | else 191 | { 192 | if (gps.checkGpsFix()) 193 | { 194 | // Prepare upstream data transmission at the next possible time. 195 | gps.getLatLon(&lat, &lon, &alt, &kmph, &sats); 196 | 197 | // we have all the data that we need, let's construct LPP packet for Cayenne 198 | lpp.reset(); 199 | lpp.addGPS(1, lat, lon, alt); 200 | lpp.addTemperature(2, tmp); 201 | lpp.addRelativeHumidity(3, hum); 202 | lpp.addBarometricPressure(4, pressure); 203 | lpp.addAnalogInput(5, vBat); 204 | // optional: send current speed, satellite count, altitude from barometric sensor and battery voltage 205 | //lpp.addAnalogInput(6, kmph); 206 | lpp.addAnalogInput(7, sats); 207 | //lpp.addAnalogInput(8, alt_barometric); 208 | 209 | 210 | // read LPP packet bytes, write them to FIFO buffer of the LoRa module, queue packet to send to TTN 211 | LMIC_setTxData2(1, lpp.getBuffer(), lpp.getSize(), 0); 212 | 213 | Serial.print(lpp.getSize()); 214 | Serial.println(F(" bytes long LPP packet queued.")); 215 | digitalWrite(BUILTIN_LED, HIGH); 216 | } 217 | else 218 | { 219 | // try again in a few 'GPS_FIX_RETRY_DELAY' seconds... 220 | os_setTimedCallback(&sendjob, os_getTime() + sec2osticks(GPS_FIX_RETRY_DELAY), do_send); 221 | } 222 | } 223 | // Next TX is scheduled after TX_COMPLETE event. 224 | } 225 | 226 | void setup() { 227 | Serial.begin(115200); 228 | Serial.println(F("LoRa & GSM based TTN car tracker")); 229 | 230 | // set battery measurement pin 231 | adcAttachPin(BATTERY_PIN); 232 | adcStart(BATTERY_PIN); 233 | analogReadResolution(10); // Default of 12 is not very linear. Recommended to use 10 or 11 depending on needed resolution. 234 | 235 | //Turn off WiFi and Bluetooth 236 | WiFi.mode(WIFI_OFF); 237 | btStop(); 238 | 239 | gps.init(); 240 | 241 | status = bme.begin(BME280_ADDRESS); 242 | 243 | if (!status) { 244 | Serial.println(F("Could not find a valid BME280 sensor, check wiring!")); 245 | } else { 246 | Serial.println(F("BME280 initialized sucessfully")); 247 | delay(1000); // stabilize sensor readings 248 | } 249 | 250 | if (status) { 251 | Serial.println(F("BMP/BME280: normal mode, 16x pressure / 2x temperature / 1x humidity oversampling,")); 252 | Serial.println(F("0.5ms standby period, filter 16x")); 253 | bme.setSampling(Adafruit_BME280::MODE_NORMAL, 254 | Adafruit_BME280::SAMPLING_X2, // temperature 255 | Adafruit_BME280::SAMPLING_X16, // pressure 256 | Adafruit_BME280::SAMPLING_X1, // humidity 257 | Adafruit_BME280::FILTER_X16, 258 | Adafruit_BME280::STANDBY_MS_0_5 ); 259 | 260 | delay(500); 261 | } 262 | 263 | Serial.println(F("Initializing LoRa module")); 264 | 265 | // LMIC init 266 | os_init(); 267 | // Reset the MAC state. Session and pending data transfers will be discarded. 268 | LMIC_reset(); 269 | 270 | // Set static session parameters. Instead of dynamically establishing a session 271 | // by joining the network, precomputed session parameters are be provided. 272 | LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY); 273 | 274 | #if defined(CFG_eu868) 275 | // Set up the channels used by the Things Network, which corresponds 276 | // to the defaults of most gateways. Without this, only three base 277 | // channels from the LoRaWAN specification are used, which certainly 278 | // works, so it is good for debugging, but can overload those 279 | // frequencies, so be sure to configure the full frequency range of 280 | // your network here (unless your network autoconfigures them). 281 | // Setting up channels should happen after LMIC_setSession, as that 282 | // configures the minimal channel set. 283 | // NA-US channels 0-71 are configured automatically 284 | LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 285 | LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band 286 | LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 287 | LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 288 | LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 289 | LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 290 | LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 291 | LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band 292 | LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band 293 | // TTN defines an additional channel at 869.525Mhz using SF9 for class B 294 | // devices' ping slots. LMIC does not have an easy way to define set this 295 | // frequency and support for class B is spotty and untested, so this 296 | // frequency is not configured here. 297 | #elif defined(CFG_us915) 298 | // NA-US channels 0-71 are configured automatically 299 | // but only one group of 8 should (a subband) should be active 300 | // TTN recommends the second sub band, 1 in a zero based count. 301 | // https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json 302 | LMIC_selectSubBand(1); 303 | #endif 304 | 305 | // Disable link check validation 306 | LMIC_setLinkCheckMode(0); 307 | 308 | // TTN uses SF9 for its RX2 window. 309 | LMIC.dn2Dr = DR_SF9; 310 | 311 | // Set data rate and transmit power for uplink (note: txpow seems to be ignored by the library) 312 | LMIC_setDrTxpow(DR_SF7, 14); 313 | 314 | pinMode(BUILTIN_LED, OUTPUT); 315 | digitalWrite(BUILTIN_LED, LOW); 316 | 317 | Serial.println(F("Ready to track")); 318 | 319 | // Start job 320 | do_send(&sendjob); 321 | } 322 | 323 | void loop() { 324 | os_runloop_once(); 325 | } 326 | -------------------------------------------------------------------------------- /config.h: -------------------------------------------------------------------------------- 1 | #ifndef LORA_TTNMAPPER_TBEAM_CONFIG_INCLUDED 2 | #define LORA_TTNMAPPER_TBEAM_CONFIG_INCLUDED 3 | 4 | 5 | // UPDATE WITH YOUR TTN KEYS AND ADDR. 6 | static PROGMEM u1_t NWKSKEY[16] = { 0x64, 0x35, 0xB7, 0x13, 0x4E, 0xE1, 0x12, 0xDE, 0x6C, 0xA6, 0x35, 0x6B, 0xEA, 0x36, 0x52, 0x11 }; // LoRaWAN NwkSKey, network session key 7 | static u1_t PROGMEM APPSKEY[16] = { 0x1A, 0xE0, 0x76, 0x47, 0x1E, 0xD0, 0x4C, 0x1D, 0x5A, 0xBD, 0x52, 0x23, 0xA2, 0x90, 0x01, 0x8F }; // LoRaWAN AppSKey, application session key 8 | static const u4_t DEVADDR = 0x260113A9 ; // LoRaWAN end-device address (DevAddr) 9 | 10 | 11 | #endif //LORA_TTNMAPPER_TBEAM_CONFIG_INCLUDED 12 | -------------------------------------------------------------------------------- /gps.cpp: -------------------------------------------------------------------------------- 1 | #include "gps.h" 2 | 3 | HardwareSerial GPSSerial(1); 4 | 5 | void gps::init() 6 | { 7 | GPSSerial.begin(9600, SERIAL_8N1, GPS_TX, GPS_RX); 8 | GPSSerial.setTimeout(2); 9 | } 10 | 11 | void gps::encode() 12 | { 13 | int data; 14 | int previousMillis = millis(); 15 | 16 | while((previousMillis + 1000) > millis()) 17 | { 18 | while (GPSSerial.available() ) 19 | { 20 | char data = GPSSerial.read(); 21 | tGps.encode(data); 22 | } 23 | } 24 | } 25 | 26 | void gps::getLatLon(double* lat, double* lon, double *alt, double *kmph, int *sats) 27 | { 28 | sprintf(t, "Lat: %f", tGps.location.lat()); 29 | Serial.println(t); 30 | 31 | sprintf(t, "Lng: %f", tGps.location.lng()); 32 | Serial.println(t); 33 | 34 | sprintf(t, "Alt: %f meters", tGps.altitude.meters()); 35 | Serial.println(t); 36 | 37 | sprintf(t, "Speed: %f km/h", tGps.speed.kmph()); 38 | Serial.println(t); 39 | 40 | sprintf(t, "Sats: %d", tGps.satellites.value()); 41 | Serial.println(t); 42 | 43 | *lat = tGps.location.lat(); 44 | *lon = tGps.location.lng(); 45 | *alt = tGps.altitude.meters(); 46 | *kmph = tGps.speed.kmph(); 47 | *sats = tGps.satellites.value(); 48 | } 49 | 50 | bool gps::checkGpsFix() 51 | { 52 | encode(); 53 | if (tGps.location.isValid() && 54 | tGps.location.age() < 2000 && 55 | tGps.hdop.isValid() && 56 | tGps.hdop.value() <= 300 && 57 | tGps.hdop.age() < 2000 && 58 | tGps.altitude.isValid() && 59 | tGps.altitude.age() < 2000 ) 60 | { 61 | Serial.println("Valid gps Fix."); 62 | return true; 63 | } 64 | else 65 | { 66 | Serial.println("No gps Fix."); 67 | return false; 68 | } 69 | } 70 | -------------------------------------------------------------------------------- /gps.h: -------------------------------------------------------------------------------- 1 | #ifndef __GPS_H__ 2 | #define __GPS_H__ 3 | 4 | #include 5 | #include 6 | 7 | #define GPS_TX 12 8 | #define GPS_RX 15 9 | 10 | class gps 11 | { 12 | public: 13 | void init(); 14 | bool checkGpsFix(); 15 | void getLatLon(double* lat, double* lon, double *alt, double *kmph, int *sats); 16 | void encode(); 17 | 18 | private: 19 | char t[32]; // used to sprintf for Serial output 20 | TinyGPSPlus tGps; 21 | }; 22 | 23 | #endif 24 | -------------------------------------------------------------------------------- /images/a6-gsm-gprs-dev-board.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/a6-gsm-gprs-dev-board.jpg -------------------------------------------------------------------------------- /images/bmp280-2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/bmp280-2.png -------------------------------------------------------------------------------- /images/bmp280.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/bmp280.jpg -------------------------------------------------------------------------------- /images/cayenne-data-fields.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/cayenne-data-fields.png -------------------------------------------------------------------------------- /images/cayenne.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/cayenne.png -------------------------------------------------------------------------------- /images/cayenne2.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/cayenne2.png -------------------------------------------------------------------------------- /images/pinmap.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/pinmap.png -------------------------------------------------------------------------------- /images/proto1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/proto1.jpg -------------------------------------------------------------------------------- /images/proto2.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/proto2.jpg -------------------------------------------------------------------------------- /images/ttgo-t-beam.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/ttgo-t-beam.jpg -------------------------------------------------------------------------------- /images/ttn-keys.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/tekk/TTGO-T-Beam-Car-Tracker/0f720fed5d649909b2231146b0a015f5d92cb4bb/images/ttn-keys.png --------------------------------------------------------------------------------