Netduino Plus 2 Simulator
STM32F405 on an Arduino-shaped board, run as plain STM32
Simulate the Netduino Plus 2 in your browser as the STM32F405 it is: Arduino C++ through the STM32duino core on QEMU, Arduino-shaped pin naming, GPIO and serial wired to a live circuit.
Three free 15-minute trial sessions · Then Maker and Pro plans · Runs in your browser
Netduino Plus 2 at a glance
The Netduino Plus 2 is an STM32F405 (Cortex-M4 with FPU at 168 MHz) on an Arduino-shaped board, so shields and the pin naming you already know carry over. In Velxio it runs as an STM32 through the STM32duino core, not through the original .NET Micro Framework: you write the same Arduino C++ as on any other STM32 in the catalog.
- Processor
- STM32F405RG, Arm Cortex-M4F at 168 MHz
- Memory
- 192 KB SRAM · 1 MB flash
- Emulation
- QEMU (libqemu-arm) on Velxio's servers
- Languages
- Arduino C++ (STM32duino core)
- Made by
- Netduino
- Plan
- Trial, then Maker or Pro
What you can do with the Netduino Plus 2 simulator
The board on the canvas is the real thing as far as your code is concerned: the same pins, the same buses, the same peripherals, wired to the same 100+ sensors, displays and actuators every other Velxio board talks to.
Arduino C++ sketches
Write a sketch in the Monaco editor with library completion, compile it against the board's own Arduino core and run the real firmware binary. The Serial Monitor is the USB port.
GPIO, PWM and ADC
Drive LEDs, relays and servos, read buttons and potentiometers, dim with PWM. Every pin follows the board's real pin map, so what works here works on the hardware.
I2C, SPI and UART
Talk to OLEDs, IMUs, ADCs, RTCs and SD cards over the buses the board really has. Bus traffic runs through emulated peripherals, not through a shortcut.
Serial Monitor
USB CDC serial reaches the Serial Monitor at the sketch's baud rate, with input, timestamps and a plotter.
Multi-board canvas
Mix this board with an Arduino, an ESP32 or a Pico on the same canvas and let them talk over serial or I2C, each running its own firmware.
Try it before you subscribe
A free account gets three 15-minute trial sessions on this board family; every run inside a session is free. Unlimited runs are part of the Maker and Pro plans and of Velxio Desktop.
Netduino Plus 2 examples
Ready-to-run projects for this board from the gallery. Open one, read the sketch, press Run.
Related simulators
Frequently asked questions
- Can I run .NET Micro Framework code on the simulated Netduino?
- No. The board runs as the STM32F405 it is, with Arduino C++ compiled by the STM32duino core. A .NET project has to be rewritten as a sketch.
- Do Arduino shields fit?
- The outline and the pin naming follow the Arduino layout, so a shield's wiring maps onto the same header positions on the canvas.
- What does the STM32 simulator cost?
- The editor is free, and any account can place the board and wire a circuit. Running it boots a QEMU guest on Velxio's servers: a free account gets three 15-minute trial sessions on the STM32 family, and unlimited runs are part of the Maker and Pro plans.
- Is the Netduino Plus 2 simulator free?
- Partly. You can build and save a Netduino Plus 2 circuit with any account, and a free account gets three 15-minute trial sessions to run it; every run inside a session is free. Unlimited runs boot a Linux guest on our servers, so they are part of the Maker and Pro plans, or of Velxio Desktop with a paid licence.
- Which languages can I use on the Netduino Plus 2?
- Arduino C++ (STM32duino core). The language is switched from the toolbar; the circuit on the canvas stays the same.
Ready to simulate the Netduino Plus 2?
Open the editor, place the Netduino Plus 2 from the picker, wire what you need and press Run.
Launch the Netduino Plus 2 simulator →