Project Files of Arduino UNO R4 Minima Library for Proteus: Smoker, E-Paper, W5500

ARDUINO UNO R4 MINIMA LIBRARY FOR PROTEUS - V1.0 (YOUR UNO R4 SKETCH, ETHERNET, A BBQ SMOKER CONTROLLER)
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/2026/10/arduino-uno-r4-minima-library-for-proteus.html
Report a bug or suggest a feature (our forum):
  https://www.theengineeringprojects.com/forum/category/arduino-uno-r4-minima-proteus-library
The demo's parts are our libraries (included) - their articles:
  MAX6675 and the K-type probe:
    https://www.theengineeringprojects.com/2026/10/max6675-thermocouple-library-for-proteus-v1-0.html
  BTS7960 and the 775 motor:
    https://www.theengineeringprojects.com/2026/10/bts7960-motor-driver-library-for-proteus-v1-0.html
  E-Paper 1.54":
    https://www.theengineeringprojects.com/2026/10/e-paper-display-library-for-proteus-v1-0.html
  W5500 Ethernet module:
    https://www.theengineeringprojects.com/2026/10/w5500-ethernet-module-library-for-proteus.html
  Laptop and phone:
    https://www.theengineeringprojects.com/2026/10/laptop-wifi-monitor-library-for-proteus.html
    https://www.theengineeringprojects.com/2026/10/mobile-wifi-monitor-library-for-proteus.html
Its Wi-Fi sister, the UNO R4 WiFi (the same pins, with Wi-Fi and the LED matrix):
  https://www.theengineeringprojects.com/2026/10/arduino-uno-r4-wifi-library-for-proteus.html
Support us (the libraries are free):
  https://www.theengineeringprojects.com/donate

FILE STRUCTURE
Arduino-UNO-R4-Minima-TEP-v1.0/
|-- Proteus Library Files/
|   |-- TEPBTS7960.LIB                                   74.8 KB   the BTS7960 (demo), to LIBRARY
|   |-- TEPEPAPER.LIB                                    54.9 KB   the 1.54" e-paper (demo), to LIBRARY
|   |-- TEPLAPTOP.LIB                                    39.5 KB   the laptop (demo), to LIBRARY
|   |-- TEPMAX6675.LIB                                   57.8 KB   the MAX6675 and the K-type probe (demo), to LIBRARY
|   |-- TEPMOBILE.LIB                                    13.1 KB   the phone (demo), to LIBRARY
|   |-- TEPMOTOR775.LIB                                  17.2 KB   the 775 motor (demo), to LIBRARY
|   |-- TEPUNOR4MINIMA.LIB                               37.7 KB   the Arduino UNO R4 Minima, to LIBRARY
|   |-- TEPW5500MOD.LIB                                  22.8 KB   the W5500 module (demo), to LIBRARY
|-- Proteus Model Files/
|   |-- TEPBTS7960.DLL                                  291.0 KB   the BTS7960, to MODELS
|   |-- TEPEPAPER.DLL                                   315.0 KB   the 1.54" e-paper, to MODELS
|   |-- TEPMAX6675.DLL                                  314.5 KB   the MAX6675 and the K-type probe, to MODELS
|   |-- TEPMOTOR775.DLL                                 153.0 KB   the 775 motor, to MODELS
|   |-- TEPNET.DLL                                       2.44 MB   the board + monitors + network, to MODELS
|-- Arduino Code/
|   |-- Minima_Smoker_Controller/Minima_Smoker_Controller.ino   12.2 KB   the demo sketch
|   |-- TEP Boards for Proteus/hardware/                655.8 KB   the Arduino IDE add-on 1.18.0 (159 files)
|-- Proteus Simulation/
|   |-- Minima_Smoker_Controller.hex                    121.2 KB   the demo sketch (U1)
|   |-- TEPBTS7960.DLL                                  291.0 KB   copy of the model
|   |-- TEPEPAPER.DLL                                   315.0 KB   copy of the model
|   |-- TEPMAX6675.DLL                                  314.5 KB   copy of the model
|   |-- TEPMOTOR775.DLL                                 153.0 KB   copy of the model
|   |-- TEPNET.DLL                                       2.44 MB   copy of the model
|   |-- UNO-R4-Minima-Smoker-Controller.pdsprj           37.4 KB   the demo: a BBQ smoker controller
|-- README.txt                                          ~14.3 KB   this file
Total: 8.11 MB (unzipped). The source code of the models is not included.

WHAT IS IT?
Proteus 8 has no Renesas RA4M1 (Arm Cortex-M4) model, so this is NOT a real RA4M1 chip. It is the Arduino UNO R4 Minima
- the UNO's size, shape and headers, the RA4M1, USB-C, the DC jack, the SWD and ICSP headers, RESET and the L, TX, RX
  and ON
LEDs - that runs YOUR UNO R4 Minima sketch in Proteus:
  * You write a normal UNO R4 sketch (D0 .. D13, A0 .. A5, LED_BUILTIN, Serial, Serial1, Wire, SPI, EEPROM, analogRead
    0 .. 1023 ...) and compile it in the Arduino IDE with our board package "TEP Boards for Proteus" 1.18.0 (in Arduino
    Code - see INSTALLATION).
  * Inside the board, Proteus's own ATmega2560 model runs the compiled sketch at 16 MHz; our model (TEPNET.DLL) wraps
    it: the UNO R4's headers, 5 V logic, A0 .. A5 (0 .. 1023 for 0 .. 5 V), the RESET button, the L LED on D13, the ON
    LED and the built-in serial monitor on the USB-C (Serial).
  * The Minima has no radio. For a network, add a W5500 (or W5100) Ethernet module with the Arduino Ethernet library, as
    the demo does: it joins the same virtual network as our Wi-Fi parts (TEP-WiFi, the Laptop and Mobile WiFi Monitors).
TEP additions: the USB-C opens the serial monitor; the LEDs glow in the simulation. There is no panel: the board has no
Wi-Fi (the UNO R4 WiFi library has the Wi-Fi panel).
Limits (say them before you start): 16 MHz, 8 KB of RAM (the real RA4M1: 48 MHz, 32 KB), int is 16 bits (the real board:
32 bits - use long for big numbers), no DAC, no CAN, no op-amp, no RTC, no HID (keyboard / mouse) USB. See MODEL SCOPE
AND
LIMITS.

ONE DEVICE (search "UNO R4 MINIMA" in Pick Devices):
  ARDUINO UNO R4 MINIMA  "Arduino UNO R4 Minima" V1.0 (Microprocessor ICs > Arduino Boards), prefix U, model TEPNET.DLL.
  The serial monitor (115200 baud) has Monitor, Plotter and Board tabs (the Board tab: the ON and L LEDs, the RESET key,
  every pin). Like every TEP window it has no Windows title bar.
The same TEPNET.DLL also runs our other sketch boards, the W5500 / W5100 modules and the Laptop / Mobile WiFi Monitors;
it replaces any older TEPNET.DLL (keep only this newest one in MODELS).

TEST STATUS
V1.0: verified in Proteus 8.5 on 25 Oct 2026 with the demo project as shipped. What the Proteus run showed:
* UNO-R4-Minima-Smoker-Controller: the monitor printed "W5500: 192.168.1.80, link ON", "Page: http://192.168.1.80/" and
  "E-paper: full update" (2.52 s), then "Pit 104.0 C  target 110 C  fan 72 %  HEATING" every 5 s; the e-paper showed PIT
  104 C, TARGET 110 C, FAN 72 %, HEATING; the BTS7960 drove the blower FORWARD at 71 % (0.68 A from the 12 V B+).
* The laptop (192.168.1.21) opened http://192.168.1.80/json and the phone (192.168.1.41) http://192.168.1.80/ (HTTP
  200) with the pit, the target and the fan; the ON and L LEDs of the board lit.
* TARGET 125 on the phone: "Target 125 C (the web page)", the fan at 100 % - STOKING on the e-paper (a partial update,
  0.45 s) and the BTS7960 at 100 % (0.71 A).
* TARGET 95 on the phone: "Target 95 C (the web page)", the fan at 0 % - HOLDING; the BTS7960 asleep (R_EN and L_EN
  LOW), the blower coasting.
* About 66 s of simulation, no errors; about 11 % of real time with the four pop-ups, the monitor and both tools 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). TEPUNOR4MINIMA.LIB is the board;
   the others are the demo's parts: TEPMAX6675.LIB, TEPBTS7960.LIB, TEPMOTOR775.LIB, TEPEPAPER.LIB, TEPW5500MOD.LIB,
   TEPLAPTOP.LIB and TEPMOBILE.LIB.
3. Copy the DLLs from "Proteus Model Files" (TEPNET.DLL, TEPMAX6675.DLL, TEPBTS7960.DLL, TEPMOTOR775.DLL, TEPEPAPER.DLL)
   to the MODELS folder (...\Proteus 8 Professional\MODELS) - replace an older TEPNET.DLL (this one is the first that
   knows the UNO R4 Minima).
4. Delete TEPUNOR4MINIMA.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 > Arduino UNO R4 Minima (TEP Proteus).
6. Start Proteus. In Pick Devices (P) search "UNO R4 MINIMA".

RUN THE DEMO
Keep the .hex file and the DLLs beside the project in "Proteus Simulation".
UNO-R4-Minima-Smoker-Controller.pdsprj - U1 the UNO R4 Minima (Minima_Smoker_Controller.hex) is a BBQ smoker's pit
controller: TC1 = the K-type probe on U3 = the MAX6675 (SCK D4, CS D5, SO D6), DRV1 = the BTS7960 (RPWM D3, R_EN and
L_EN on D2, LPWM on GND, B+ on +12V) driving M1 = the 775 motor (the blower), EPD1 = the 1.54" e-paper (DIN D11, CLK
D13, CS D7, DC D8, RST D9, BUSY A0) and U2 = the W5500 Ethernet module (SCS D10, SCLK D13, MOSI D11, MISO D12; the fixed
address 192.168.1.80). PC1 the Laptop WiFi Monitor opens http://192.168.1.80/json, MOB1 the Mobile WiFi Monitor the page
http://192.168.1.80/. The MAX6675, the BTS7960, the e-paper and the W5500 are the Advance versions: each opens its
pop-up window at Run.
Press Run. The probe reads 104 C, the target is 110 C: HEATING, the fan at 72 % (12 % for each degree below the target).
On the phone tap TARGET 125: STOKING, the fan at 100 %. Tap TARGET 95: the pit is above it - HOLDING, the fan stops. FAN
OFF stops the blower whatever the pit does, FAN AUTO gives it back to the controller. Change the probe's TEMPERATURE
(double- click TC1) for another pit. The e-paper shows the pit, the target, the fan and the address; it updates (a
partial update) when a value changes, at most every 4 s.
The W5500's 5V: in the demo it goes to Proteus' power rail (a power terminal) - its model reads the supply as a digital
level, which the board's 5V (an analog source) does not give it; on a real board it sits on the UNO's 5V. Closed the
monitor? Click the board's USB-C.
The monitor (115200) prints a line every 5 s and takes TARGET <C>, AUTO, OFF, STATUS and HELP.

THE PINS (the label on the board, what it can do in the simulation)
  D0 / D1            Serial1 RX / TX (not the USB), GPIO
  D2 .. D13          GPIO, interrupt, analogWrite (PWM on any pin through the board model)
  D10 .. D13         also SPI SS / MOSI / MISO / SCK (the hidden AVR's hardware SPI); D13 is also the L LED
  A0 .. A5           analogRead 0 .. 1023 for 0 .. 5 V; also GPIO
  A4 / A5, SDA / SCL Wire (I2C) - the same two nets
  5V / 3.3V / IOREF  5 V (the board's logic), a 3.3 V output, 5 V
  GND, RESET         ground; RESET LOW holds the board in reset
  AREF, Vin, NC      drawn, not modelled
Serial is the USB-C (the board's monitor), not D0 / D1. The pins are 5 V logic, as on the real UNO R4.

PROPERTIES (double-click the board > Edit Properties)
  PROGRAM   the sketch's HEX (Arduino IDE: Sketch > Export Compiled Binary with Arduino UNO R4 Minima (TEP Proteus))
  MONITOR   YES = the built-in serial monitor on the USB (Serial);  BAUD  its speed (115200, or AUTO)
  AUTOOPEN  YES = the monitor window opens at Run (the demo: YES)
One UNO R4 Minima per design (its USB serial lines are hidden pins, and Proteus joins hidden pins of the same name
across parts).

TROUBLESHOOTING
* Nothing happens at Run: the HEX was not built with TEP Boards for Proteus - select Arduino UNO R4 Minima (TEP Proteus)
  and export the binary again.
* "No W5500 found" in the monitor, and NO POWER on the W5500's pop-up: its 5V needs a digital supply (the power
  terminal, as in the demo); SCS on D10, SCLK D13, MOSI D11, MISO D12.
* "link OFF": the W5500's CABLE property must be IN (or click its RJ45 jack on the pop-up).
* The e-paper stays blank: SPI_MODE0 (GxEPD2's default, the only mode Proteus's AVR SPI clocks), CS D7, DC D8, RST D9,
  BUSY A0; the e-paper and the W5500 share D11 / D13, each with its own CS - keep both CS pins HIGH before either talks.
* The pit shows "---" (NO PROBE): the thermocouple's wire is broken (the probe's WIRE property) - the fan stays off.
* The motor does not turn: B+ needs +12V (a power terminal named +12V), R_EN and L_EN HIGH, LPWM LOW.
* An integer goes wrong above 32767: int is 16 bits on the hidden AVR - use long.
* The page shows old values: tap REFRESH (the monitors do not reload by themselves).

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/arduino-uno-r4-minima-proteus-library

LICENCES AND THIRD-PARTY NOTES
* The board model and the network (TEPNET.DLL), the symbols and artwork (TEPUNOR4MINIMA.LIB, TEPW5500MOD.LIB,
  TEPLAPTOP.LIB, TEPMOBILE.LIB) and the module models (TEPMAX6675, TEPBTS7960, TEPMOTOR775, TEPEPAPER .LIB / .DLL) are
  made by The Engineering Projects. The board's processor is Proteus's own ATmega2560 model. 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 other libraries and our core files are MIT (LICENSE-MIT.txt).
* The demo sketch uses the Arduino Ethernet library 2.0.2 (LGPL 2.1), Adafruit's MAX6675 library 1.1.2 (BSD), GxEPD2
  1.6.9 by Jean-Marc Zingg (GPL-3.0, https://github.com/ZinggJM/GxEPD2) and Adafruit GFX 1.12.6 (BSD) with BusIO (MIT) -
  install them in the Arduino IDE (Library Manager) to compile it. The .hex is included; as it contains GxEPD2, the demo
  sketch is shared under the GPL-3.0 (its source is in Arduino Code) and you can rebuild the .hex with modified
  libraries.
* Proteus is a product of Labcenter Electronics and is not included. Arduino and UNO are trademarks of Arduino S.r.l.;
  Renesas and RA4M1 names of Renesas Electronics; WIZnet and W5500 of WIZnet. 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) and the libraries above, open Arduino
Code\Minima_Smoker_Controller, select Arduino UNO R4 Minima (TEP Proteus) and use Sketch > Export Compiled Binary. For a
real UNO R4 Minima install "Arduino UNO R4 Boards" in the Boards Manager, select "Arduino UNO R4 Minima" and upload -
the same sketch.

MODEL SCOPE AND LIMITS
Modelled: the UNO R4 Minima's header pins on a hidden ATmega2560 (Proteus's AVR model, 16 MHz, 5 V); digital I/O,
analogRead (A0 .. A5) 0 .. 1023 for 0 .. 5 V, PWM (analogWrite) and attachInterrupt on any pin through the board model;
the RESET button, the L LED on D13, the ON LED; Serial (the USB-C, the board's monitor), Serial1 on D0 / D1, Wire on A4
/ A5 and SPI on D10 .. D13 (the AVR's hardware), EEPROM; a network through a TEP Ethernet module (W5500 / W5100) on SPI.
Not modelled: the RA4M1 itself (Arm Cortex-M4, 48 MHz, 32 KB RAM, 32-bit int), the 12-bit DAC on A0, the CAN bus, the
op-amp, the RTC, the HID / keyboard USB, the TX and RX LEDs (drawn, not driven), the SWD header, the DC jack (6 - 24 V)
and Vin. Upload over USB is not used (Proteus loads the HEX). The simulation runs below real time.

VERSION
TEP Arduino UNO R4 Minima library V1.0 (Oct 2026). Device ARDUINO UNO R4 MINIMA (TEPUNOR4MINIMA.LIB / TEPNET.DLL), TEP
Boards for Proteus 1.18.0 (adds the UNO R4 Minima). Demo sketch Minima_Smoker_Controller V1.0. Demo parts: MAX6675 and
the K-type probe, BTS7960 and the 775 motor, E-Paper 1.54" (the Advance versions), W5500 ETHERNET MODULE, LAPTOP WIFI
MONITOR and MOBILE WIFI MONITOR.