Project Files of T-SIM7600 Library for Proteus: ESP32 4G LTE GPS Tracker

LILYGO T-SIM7600 LIBRARY FOR PROTEUS - V1.0 (YOUR ESP32 SKETCH WITH A 4G LTE MODEM AND GPS ON THE BOARD)
Designed by The Engineering Projects
www.TheEngineeringProjects.com

IMPORTANT LINKS
Article (read it first - pictures, step by step, every feature explained):
  https://www.theengineeringprojects.com/2026/11/lilygo-t-sim7600-library-for-proteus.html
Report a bug or suggest a feature (our forum):
  https://www.theengineeringprojects.com/forum/category/lilygo-t-sim7600-proteus-library
The demo's sensor and relay are our libraries (included) - their articles:
  https://www.theengineeringprojects.com/2026/09/mpu6050-proteus-library.html
  https://www.theengineeringprojects.com/2026/10/relay-module-library-for-proteus-v1-0.html
The 2G sister board:
  https://www.theengineeringprojects.com/2026/11/lilygo-t-call-sim800l-library-for-proteus.html
Support us (the libraries are free):
  https://www.theengineeringprojects.com/donate

FILE STRUCTURE
LilyGO-T-SIM7600-TEP-v1.0/
|-- Proteus Library Files/
|   |-- TEPMPU6050.LIB                                  130.9 KB   the MPU6050 (demo), to LIBRARY
|   |-- TEPRELAY.LIB                                    490.4 KB   the relay module (demo), to LIBRARY
|   |-- TEPTSIM7600.LIB                                  47.6 KB   the T-SIM7600, to LIBRARY
|-- Proteus Model Files/
|   |-- TEPMPU6050.DLL                                  537.0 KB   the MPU6050, to MODELS
|   |-- TEPNET.DLL                                       2.81 MB   the board + monitors + network, to MODELS
|   |-- TEPRELAY.DLL                                    330.0 KB   the relay module, to MODELS
|-- Arduino Code/
|   |-- TSim7600_GPS_Tracker/TSim7600_GPS_Tracker.ino     9.6 KB   the demo sketch
|   |-- TEP Boards for Proteus/hardware/                984.5 KB   the Arduino IDE add-on 1.47.0 (224 files)
|-- Proteus Simulation/
|   |-- TEPMPU6050.DLL                                  537.0 KB   copy of the model
|   |-- TEPNET.DLL                                       2.81 MB   copy of the model
|   |-- TEPRELAY.DLL                                    330.0 KB   copy of the model
|   |-- TSim7600_GPS_Tracker.hex                         56.8 KB   the demo sketch (U1)
|   |-- T-SIM7600-GPS-Tracker.pdsprj                     24.6 KB   the demo: a 4G GPS vehicle tracker
|-- README.txt                                          ~13.1 KB   this file
Total: 9.03 MB (unzipped). The source code of the models is not included.

WHAT IS IT?
Proteus 8 has no ESP32 or SIM7600 processor model, so this is NOT a real ESP32 chip. Our team has put a lot of effort
into
building this board ourselves: it is LilyGO's T-SIM7600 - the long black board with the ESP32-WROVER module, a SIM7600
4G LTE
modem with GNSS, the nano SIM socket, two USB Type-C ports, the PWR and RST buttons, the blue LED and the red network
LED -
that runs YOUR ESP32 Arduino sketch in Proteus:
  * You write a normal T-SIM7600 sketch (the GPIO numbers of the board, analogRead 0-4095, analogWrite, ledcWrite,
    attachInterrupt, Wire, SPI, Serial, Serial1 to the modem, WiFi, WebServer, HTTPClient ...) and compile it in the
    Arduino
    IDE with our board package "TEP Boards for Proteus" 1.47.0 (in Arduino Code - see INSTALLATION).
  * The SIM7600 is ON the board: GPIO27 goes to its RXD, GPIO26 comes from its TXD (Serial1 at 115200), a pulse on
    GPIO4 is its
    PWRKEY and GPIO25 its FLIGHT pin. It answers real AT commands: AT, ATE, AT+CMGF, AT+CNMI, AT+CLIP, AT+CEREG?,
    AT+CSQ, AT+CPSI?,
    AT+CNSMOD?, AT+CMGS, ATH, ATA, and for its GPS AT+CGPS, AT+CGPSINFO and AT+CGNSSINFO.
  * A phone window plays the other end: it texts the board, gets its SMS, calls it, sees the network, and sets the GPS
    scene:
    PARKED, DRIVING or NO FIX. Click the SIM7600.
The board stands as in LilyGO's photo: the antenna of the WROVER at the top, the 15 + 15 pads beside the module (left,
top to
bottom: 3V3 GND 32 33 34 25 26 27 4 2 15 14 13 12 VBAT; right: TX RX 3V3 GND 22 21 23 19 18 5 39 0 RST GND VBUS), and
the SIM7600
at the bottom. VBAT and RST are drawn only. It is shorter than the real board so that it stays a small part on an A4
sheet.
TEP additions: the PCB antenna's colours, the PANEL pad (or the WROVER module) opens the board's panel, the TTL port
opens the
serial monitor, a click on the SIM7600 opens the phone.
Limits (say them before you start): your sketch gets 8 KB of RAM in the simulation (the real board: 520 KB plus
PSRAM), about
256 KB of flash, int is 16 bits in the simulation (use long / int32_t for big numbers), no FreeRTOS tasks, no second
core, no
Bluetooth, no ESP-IDF, no real TLS, no soft AP. The modem does SMS, calls and GPS: LTE data (AT+NETOPEN, AT+CIPOPEN,
TinyGSM's
gprsConnect, MQTT, HTTP) is NOT modelled. See MODEL SCOPE AND LIMITS.

ONE DEVICE (search "T-SIM7600" in Pick Devices):
  T-SIM7600  "LilyGO T-SIM7600" V1.0 (Microprocessor ICs > ESP32 Boards), prefix U, model TEPNET.DLL. Three TEP
  windows, none
  with a Windows title bar: the phone (a click on the SIM7600), the panel (the PANEL pad: Wi-Fi, Pins, Test, Settings,
  Help) and
  the serial monitor (the TTL port, 115200 baud: Monitor, Plotter and Board tabs).
The same TEPNET.DLL also runs our other Wi-Fi boards; it replaces any older TEPNET.DLL (keep only this newest one in
MODELS).

TEST STATUS
V1.0: verified in Proteus 8.5 on 30 Oct 2026 with the demo project as shipped. What the Proteus run showed:
* T-SIM7600-GPS-Tracker: the monitor printed "Starting the SIM7600", "On the 4G network", "GPS fix: 31.520400,
  74.358700" and "SMS to +15555550191: Tracker online
  https://maps.google.com/?q=31.520400,74.358700"; the phone window showed REGISTERED - TEP MOBILE, 115200 bps and the
  GNSS card with the fix.
* From the phone: WHERE answered with the map link; ARM lit the blue LED; SHAKE on the MPU6050's window: ">> ALARM:
  bump" and its SMS; ARM again, DRIVING: ">> ALARM: moved" and its SMS.
* STOP: the relay on and "Engine stopped"; NO FIX: "GPS: no fix", and WHERE answered "No GPS fix yet"; PARKED: the fix
  came back; START: the relay off and "Engine free, alarm off".
* CALL: "Missed call from +15555550191", the call rejected, the map link by SMS.
* about 100 s of simulation, no errors, with the pop-ups, the panel and the monitor open.

INSTALLATION (about 3 minutes)
1. Close Proteus. Extract the WHOLE ZIP to a normal folder (e.g. Desktop).
2. Copy everything in "Proteus Library Files" to the LIBRARY folder of Proteus, for example:
     C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional\LIBRARY
   (on some PCs: C:\ProgramData\Labcenter Electronics\Proteus 8 Professional\LIBRARY). TEPTSIM7600.LIB is the board;
   the others
   are the demo's parts: TEPMPU6050.LIB and TEPRELAY.LIB.
3. Copy the DLLs from "Proteus Model Files" (TEPNET.DLL, TEPMPU6050.DLL, TEPRELAY.DLL) to the MODELS folder
   (...\Proteus 8
   Professional\MODELS) - replace an older TEPNET.DLL (this one is the first that knows the T-SIM7600).
4. Delete TEPTSIM7600.IDX from the LIBRARY folder if it is there.
5. The Arduino IDE (only to compile your own sketches - the demo has its HEX file): copy the folder
   "Arduino Code\TEP Boards for Proteus\hardware" into your sketchbook folder (normally Documents\Arduino), so that
   Documents\Arduino\hardware\tep\avr\boards.txt exists (replace an older copy); restart the IDE. The Arduino AVR Boards
   platform must be installed (it comes with IDE 1.8.x; in IDE 2.x install "Arduino AVR Boards" from the Boards
   Manager once).
   Tools > Board > TEP Boards for Proteus > T-SIM7600 (TEP Proteus).
6. Start Proteus. In Pick Devices (P) search "T-SIM7600".

RUN THE DEMO
Keep the .hex file and the DLLs beside the project in "Proteus Simulation".
T-SIM7600-GPS-Tracker.pdsprj - U1 the T-SIM7600 (TSim7600_GPS_Tracker.hex) is a vehicle tracker: U2 = the MPU6050 on
I2C feels a
bump, RLY1 = the relay on GPIO13 cuts the engine (active LOW). Both are the Advance versions: they open their pop-up
windows at
Run.
The sketch pulses PWRKEY on GPIO4, sets up the SIM7600 with AT commands, waits for +CEREG, starts the GPS with
AT+CGPS=1,1 and
reads AT+CGPSINFO every 2 s. At the first fix it texts "Tracker online" with a map link. The blue LED (GPIO12) shows
that the
alarm is armed.
Press Run and wait for the phone to show the message. On the phone click WHERE, then ARM. Click SHAKE on the MPU6050's
window: the
alarm goes off once. Click FLAT, ARM again, then DRIVING: at 100 m from where it was armed the alarm goes off again.
STOP cuts the
engine; START frees it and disarms. NO FIX takes the sky away. A CALL is a missed call: the board hangs up, which
costs the
caller nothing, and answers with the map link by SMS.
Closed a window? The TTL port of the board opens the monitor, the PANEL pad the panel, the SIM7600 the phone.

THE PINS (the label on the board, what it can do in the simulation)
  27 / 26       MODEM_TX / MODEM_RX: Serial1, to the SIM7600 (115200)
  4             MODEM_PWRKEY: a HIGH pulse of 100 ms or more starts the module, one of 2.5 s or more stops it
  25            MODEM_FLIGHT: HIGH = normal, LOW = flight mode
  32, 33, 34    MODEM_DTR, MODEM_RI (LOW while it rings), MODEM_STATUS (HIGH when it runs)
  21 / 22       SDA / SCL (Wire)
  18, 19, 23, 5 SCK, MISO, MOSI, SS (SPI)
  TX / RX       GPIO1 / 3: Serial (the board's monitor)
  12            the blue LED (LED_BUILTIN, LED_PIN), GPIO
  0, 2, 13, 14, 15   GPIO, PWM, interrupt (2, 13, 14 and 15 are the TF card's on the real board)
  39            input only, analogRead 0 .. 4095 for 0 .. 3.3 V
  3V3, VBUS, GND  3.3 V (the logic), 5 V, ground
Leave GPIO4, 25, 26, 27, 32, 33 and 34 to the modem.

PROPERTIES (double-click the board > Edit Properties)
  PROGRAM   the sketch's HEX (Arduino IDE: Sketch > Export Compiled Binary with T-SIM7600 (TEP Proteus))
  SIMNUM    the SIM card's number (+15555550101);  PHONENUM  the phone's number (+15555550191)
  OPERATOR  the network's name (TEP MOBILE);  GSMCLOCK  the module's clock (PC or YYYY-MM-DD HH:MM:SS)
  GPSLAT, GPSLON  where the vehicle starts (31.5204, 74.3587)
  WIFISSID  the router in range (default TEP-WiFi);  WIFIPASS  its password (default 12345678)
  MONITOR   YES = the built-in serial monitor on Serial;  BAUD  its speed (115200, or AUTO)
  AUTOOPEN  YES = the monitor window opens at Run (the demo: YES)
The phone's NETWORK keys set the signal during the run: GOOD, WEAK or NO SIGNAL; its GNSS keys: PARKED, DRIVING (50
km/h) or NO FIX.

TROUBLESHOOTING
* The phone says NO POWER: the sketch must pulse GPIO4 HIGH for 100 ms or more (MODEM_PWRKEY).
* The module never answers: Serial1.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX), and send AT until it answers OK.
* AT+CMGS fails: wait for +CEREG: 0,1, the module needs a few seconds to register.
* AT+CGPSINFO gives only commas: send AT+CGPS=1,1 and wait for the fix (6 s here; a real module needs longer, under an
  open sky).
* A position looks wrong: a float has about 7 digits. Keep it in a long, in millionths of a degree.
* An integer goes wrong above 32767: int is 16 bits in the simulation - use long.

BUG REPORTS AND FEATURE REQUESTS
Please post them in our forum with a screenshot and the Serial Monitor text:
  https://www.theengineeringprojects.com/forum/category/lilygo-t-sim7600-proteus-library

LICENCES AND THIRD-PARTY NOTES
* The board model and the modem (TEPNET.DLL), the symbols and artwork (TEPTSIM7600.LIB) and the sensor and relay
  models are made
  by The Engineering Projects. The source code of the models is not included.
* TEP Boards for Proteus (Arduino Code): its core, the variants and the EEPROM, SPI and Wire libraries are modified
  copies of the Arduino AVR core 1.8.6 - GNU Lesser General Public License 2.1 (LGPL 2.1, the text:
  LICENSE-LGPL-2.1.txt); its WiFi, WebServer and the other libraries and our core files are MIT (LICENSE-MIT.txt).
* The demo sketch uses the core's Wire library only.
* Proteus is a product of Labcenter Electronics and is not included. T-SIM7600 is a name of LilyGO, SIM7600 of SIMCom
  and ESP32
  of Espressif Systems. This library is not made or endorsed by them or by Labcenter.

REBUILDING THE FIRMWARE (OPTIONAL)
The HEX file is supplied. Install TEP Boards for Proteus (INSTALLATION step 5), open Arduino
Code\TSim7600_GPS_Tracker, select
T-SIM7600 (TEP Proteus) and use Sketch > Export Compiled Binary. For a real board install "esp32" by Espressif Systems
(3.x), select "ESP32 Wrover Module", define MODEM_TX 27, MODEM_RX 26, MODEM_PWRKEY 4, MODEM_FLIGHT 25 and upload.

MODEL SCOPE AND LIMITS
Modelled: the board's 22 header GPIO pins; digital I/O, analogRead 0 .. 4095, PWM (analogWrite / ledc) and
attachInterrupt
through the board model; the blue LED; Serial (the board's monitor), Wire and SPI; WiFi station mode, DHCP, TCP, UDP,
WebServer,
HTTPClient and mDNS; the SIM7600 on Serial1, bit by bit: PWRKEY, FLIGHT, STATUS, RI, registration, signal, SMS in text
mode, calls
and its GNSS (a vehicle that stands, drives at 50 km/h or loses the sky; the first fix after 6 s).
Not modelled: the ESP32 itself (the two 240 MHz cores, the PSRAM, the flash), LTE data, PDU-mode SMS, audio, the TF
card, the
battery and solar inputs (GPIO35 and 36), the RST and PWR buttons' pins, Bluetooth. The simulation runs below real time.

VERSION
TEP T-SIM7600 library V1.0 (Nov 2026). Device T-SIM7600 (TEPTSIM7600.LIB / TEPNET.DLL), TEP Boards for Proteus 1.47.0
(adds the T-SIM7600). Demo sketch TSim7600_GPS_Tracker V1.0. Demo parts: MPU6050ADVTEP and RELAY1ADVTEP (the Advance
versions).