Articles, guides and notes about software development, engineering and the tools we use every day.
Velxio Pro can now connect your own AI agent — Claude Code or OpenAI Codex — to a saved project over MCP. Your agent builds the circuit and writes the firmware from your terminal, and it appears live on the Velxio canvas.
DFRobot supports Velxio. Their UNIHIKER M10, the HuskyLens AI camera and the Gravity line (ECG, mmWave presence, CO gas, pH, soil moisture, offline voice recognition) are in the catalog with 42 examples. This post is about what a simulated sensor is good for, and it starts with a clock.
Pimoroni is supporting Velxio, and three of their RP2350 boards are in the catalog: the Badger 2350, the Pico Plus 2 W and the Galactic Unicorn. The Badger even boots its real factory firmware in the browser. Here is what you can do with them today, starting from a to-do list on simulated e-paper.
M5Stack supports Velxio, and their hardware is now in the catalog: the Cardputer ADV, the M5Stack Core and the Chain LED matrices, with 27 examples that include M5Stack's official sketches running unmodified. Here is how to try them, what each board does in the simulator, and where the partnership goes from here.
Velxio and Seeed Studio are working together. Five XIAO boards, the Round Display for XIAO, the Grove Smart IR Gesture Sensor and the ReSpeaker Lite are now in the Velxio catalog, with 22 ready-to-run examples. This post shows what you can do with them, starting from an analogue clock on the Round Display.
How Velxio compares to Wokwi, Tinkercad, Proteus and Fritzing — what each tool is genuinely good at, and when an open-source, self-hostable simulator is the right call.
Blink the built-in LED on GPIO2 and an external red LED on GPIO4. A perfect beginner project to verify ESP32 emulation works.
A comprehensive tutorial demonstrating Serial, I2C, SPI, and ADC on the Raspberry Pi Pico using the Velxio simulator. Includes circuit walkthrough, code analysis, and debugging tips.
A beginner-friendly tutorial on using the Raspberry Pi Pico's ADC to read analog inputs and the internal temperature sensor, with circuit and code walkthroughs.
A step-by-step guide to building and testing an SPI loopback on the Raspberry Pi Pico using Velxio's in-browser simulator. Includes circuit wiring, code walkthrough, and debugging tips.