TrackerGPSRF

Overview:

TrackerGPSRF is tracker GPS transmitter through RF 433 Mhz up to 1.8Km. It composed by two module:

• the tracker GPS/RF which had be to attach to the object which has to be track.
• the Hotspot/Webserver which create a hotspot wifi and hosted webserver to track the object in realtime

Component to buy and assemble:

Module GPS/RF:

• GPS board: 1 x NEO6MV2
• RF board: 1 x HC12
• 1 lipo 1S 3.7V 150mah to 450mah (or more depend on uptime needed and the weight that can be use for application)

Module Hotspot/Webserver:

• Arduino board: 1 x nodemcu v2 (or sparkfun or wemos...)
• RF board: 1 x HC12
• 1 lipo 1S 3.7V 450mah mini to 1200mah (or more depend on uptime needed and the weight that can be use for application) or USB powerbank or USB charger

How it work:

To be update.

How to parameter HC12 to increase from 1Km to 1.8Km:

Before wired the two HC12 Board you can configure them to increase their range to 1.8km. For that you have to use an USB TTL and send AT command(like describe in datasheet) to pass the board to 2400 or 1200 baud and FU4 mode. in this configuration the HC12 can transmit only 60 bits by message... (this fonctionnality had not been tested for the moment).

Default parameter is 9600 baud and FU3 mode.

How to wire GPS/RF module:

How to wire Hotspot/Webserver module:

How to power each module:

Just put a lipo 1S 3.7v (or other battery that give 3.7V)

• the + of the battery on VCC(for gps module) or VIN(for Hotspot/Webserver module)
• the - of the battery on GND(-)

You can also power the Hotspot/Webserver(nodemcu) with USB.

How to flash firmware on the Hotspot/Webserver module

You have choice to edit source and build your own firmware using Arduino IDE https://www.arduino.cc/en/Main/software and configure the ESP8266 library https://learn.sparkfun.com/tutorials/esp8266-thing-hookup-guide/installing-the-esp8266-arduino-addon

Or you can use the PreBuild Firmware push directly in the git (PreBuild_Firmware directory) with the flasher below: https://nodemcu.readthedocs.io/en/latest/en/flash/#nodemcu-flasher

How to access to hotspot and webserver:

you add to search the wifi connection behind ans use the password (it can be change in source)

WiFi HotSpot SSID: GPSRFWebserver

WiFi HotSpot PASSWORD: RFGPS123456789

Once you are connected open a web page on http://192.168.4.1/ that's all