MP2617 Charger chip is used to handle the battery charging.
Cellular module
SIM7600G – LTE 3G 2G – For Global use
SIM7600E – LTE 3G 2G – For Europe
SIM7600A – LTE 3G 2G – For North America
Navigation hardware
SE868K3AL GNSS module comes with inbuilt patch antenna
SIM7600x has inbuilt GNSS hardware which needs external active antenna [Bias is already provided to the GNSS U.FL connector]
Aux Inputs
None
Aux Outputs
1x Relay Output (MOSFET DRIVERS) [Optional]
Operating Modes
HTTP, SMS, MQTT/TCP
Configuration Methods
Bluetooth 5.0 available on board can be used to configure the device using the VALTRACK-V4 Setup application.
Processor
STM32WB55CEU6 ARM Cortex M4 , 64MHz, 512KB of Flash memory
Motion Sensor
LIS3DH 12-bit, 3-axis Accelerometer
Memory
1-Mbit / 128KB EEPROM for storing parameters and lost pings.
Antenna
📶 Cellular : U.FL Connector
1.5 dBi gain Flexible PCB antenna comes attached
🛰
SIM7600x GNSS : U.FL Connector
Patch antenna comes attached
Available on request only !
🛰 SE868K3L GNSS : Inbuilt antenna
Connectivity
Bluetooth, GPRS, SMS, Call
SIM connector
Nano SIM card connector available
Flashing options
SWD Debug port available on a FFC connector [10 pin, 0.5mm pitch ]
MCU can be flashed Over The Air (OTA) using Bluetooth interface
Enclosure
Device ships in a standard IP67 rated enclosure.
Getting Started
Power section :
The device has two power inputs,
VALTRACK-V4-VTS GPS Tracker 4G Power section
1) Main Power input – VCHG :
This is the main power input of the device and is usually connected to the vehicle’s battery. Right now the device supports from 12VDC to 42VDC input range. When you power the device from VCHG it also charges the battery connected to VBAT input. The main power chip used here is the TPS54240 switching regulator.
2) Backup battery power input – VBAT
This is the backup battery input and a 3.7V to 4.2V LiPo battery has to be connected to it. Use at least 400mAh battery. The main power chip used here is the MP2617 switching battery charger with power path management.
To understand the power section of the device, look at the block diagram.
Opening the enclosure
You need to remove the four screws present in the bottom of the enclosure to open it. Use a star-head screwdriver.
Inserting the SIM card in GPS Tracker 4G
Get a Nano-SIM card and insert it into the board’s push-pull type SIM card slot.
Power should not be connected to the device during SIM card insertion
Powering the GPS Tracker 4G
VALTRACK-V4-VTS-ESP32-C3 GPS Tracker 4G can run from any of the two power sources,
Main Power Input
[VCHG connector]
Can take 12V to 42V DC [Connect to 12V Lead Acid Battery]
It’s a JST-type connector
Has Reverse Polarity Protection
Backup Battery Input
[VBAT connector]
Can take 3.7V to 4.2V DC [Connect a single cell 3.7V-4.2V Li-Po or Li-Ion Battery]
Use at least 500mAH and above capacity batteries
The battery connected to this port automatically gets charged by VCHG.
Its a JST-XH type connector
Doesn’t have Reverse Polarity Protection
Device can start functioning with any of above power sources.
LED Indicators
Once the device is powered ON, The LED will show up and start with all RED .
Once the SIM is registered to the network, the NETWORK LED turns GREEN .
Once the GNSS module gets a location sync, the LOCATION LED turns GREEN .
After 30 seconds of inactivity, all LED will turn OFF to save power and turn ON again on movement detected by Accelerometer.
POWER LED remains RED all the time
You Can Read Brief Documentation of this GPS Tracker 4G From here
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