Velxio Blog — software development, engineering and technology articles in 9 languages.https://velxio.dev/https://velxio.dev/blog/posts/connect-ai-agent/https://velxio.dev/blog/posts/connect-ai-agent/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.Wed, 26 Aug 2026 14:44:38 GMThttps://velxio.dev/blog/posts/dfrobot-partnership/https://velxio.dev/blog/posts/dfrobot-partnership/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.Wed, 19 Aug 2026 01:10:00 GMThttps://velxio.dev/blog/posts/pimoroni-partnership/https://velxio.dev/blog/posts/pimoroni-partnership/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.Wed, 19 Aug 2026 01:00:00 GMThttps://velxio.dev/blog/posts/m5stack-partnership/https://velxio.dev/blog/posts/m5stack-partnership/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.Wed, 19 Aug 2026 00:30:00 GMThttps://velxio.dev/blog/posts/seeed-studio-partnership/https://velxio.dev/blog/posts/seeed-studio-partnership/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.Tue, 18 Aug 2026 06:00:00 GMThttps://velxio.dev/blog/posts/example-esp32-blink-led/https://velxio.dev/blog/posts/example-esp32-blink-led/Blink the built-in LED on GPIO2 and an external red LED on GPIO4. A perfect beginner project to verify ESP32 emulation works.Tue, 16 Jun 2026 05:00:34 GMThttps://velxio.dev/blog/posts/velxio-vs-wokwi/https://velxio.dev/blog/posts/velxio-vs-wokwi/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.Tue, 16 Jun 2026 03:00:00 GMThttps://velxio.dev/blog/posts/example-pico-multi-protocol/https://velxio.dev/blog/posts/example-pico-multi-protocol/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.Mon, 15 Jun 2026 05:02:48 GMThttps://velxio.dev/blog/posts/example-pico-adc-read/https://velxio.dev/blog/posts/example-pico-adc-read/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.Sun, 14 Jun 2026 05:02:33 GMThttps://velxio.dev/blog/posts/example-pico-spi-loopback/https://velxio.dev/blog/posts/example-pico-spi-loopback/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.Sat, 13 Jun 2026 05:02:50 GMThttps://velxio.dev/blog/posts/example-pico-i2c-eeprom-rw/https://velxio.dev/blog/posts/example-pico-i2c-eeprom-rw/A step-by-step guide to simulating I2C EEPROM read/write with the Raspberry Pi Pico in Velxio, including circuit wiring, code walkthrough, and debugging tips.Fri, 12 Jun 2026 05:02:44 GMThttps://velxio.dev/blog/posts/example-pico-i2c-rtc-read/https://velxio.dev/blog/posts/example-pico-i2c-rtc-read/Step-by-step tutorial to read time from a DS1307 RTC over I2C on a Raspberry Pi Pico using the Velxio in-browser simulator.Thu, 11 Jun 2026 05:02:52 GMThttps://velxio.dev/blog/posts/example-pico-i2c-scanner/https://velxio.dev/blog/posts/example-pico-i2c-scanner/A step-by-step guide to creating an I2C scanner on the Raspberry Pi Pico using Velxio. Includes circuit wiring, code walkthrough, and debugging tips.Wed, 10 Jun 2026 05:02:37 GMThttps://velxio.dev/blog/posts/example-pico-serial-led-control/https://velxio.dev/blog/posts/example-pico-serial-led-control/Build a Raspberry Pi Pico project that controls an LED via serial commands. Learn wiring, code, and debugging in Velxio's browser-based simulator.Tue, 09 Jun 2026 05:02:29 GMThttps://velxio.dev/blog/posts/example-pico-serial-echo/https://velxio.dev/blog/posts/example-pico-serial-echo/A beginner-friendly tutorial for the Pico Serial Echo example on Velxio. Learn UART communication, serial echo, and heartbeat timing with an RP2040.Mon, 08 Jun 2026 05:02:25 GMThttps://velxio.dev/blog/posts/example-pico-blink/https://velxio.dev/blog/posts/example-pico-blink/Step-by-step guide to blink the built-in LED on Raspberry Pi Pico using Velxio's in-browser simulator. Covers circuit wiring, Arduino code, and debugging tips.Mon, 08 Jun 2026 04:03:38 GMThttps://velxio.dev/blog/posts/example-multi-protocol/https://velxio.dev/blog/posts/example-multi-protocol/A tutorial on using Serial, I2C, and SPI together on Arduino Uno in the Velxio simulator. Covers I2C bus scan, EEPROM read/write, and SPI transfer with code walkthrough.Mon, 18 May 2026 05:01:19 GMThttps://velxio.dev/blog/posts/example-spi-loopback/https://velxio.dev/blog/posts/example-spi-loopback/A hands-on tutorial for the SPI loopback example in Velxio. Learn SPI protocol, wiring, and code with no external libraries.Sun, 17 May 2026 05:01:02 GMThttps://velxio.dev/blog/posts/example-i2c-eeprom-rw/https://velxio.dev/blog/posts/example-i2c-eeprom-rw/Step-by-step guide to I2C EEPROM read/write with Arduino Uno in Velxio simulator. Covers circuit, code, key concepts, and debugging tips.Sat, 16 May 2026 05:01:05 GMThttps://velxio.dev/blog/posts/example-i2c-rtc-read/https://velxio.dev/blog/posts/example-i2c-rtc-read/A step-by-step guide to reading time from a DS1307 RTC via I2C with Arduino, using the Velxio in-browser simulator.Fri, 15 May 2026 05:01:02 GMThttps://velxio.dev/blog/posts/example-i2c-scanner/https://velxio.dev/blog/posts/example-i2c-scanner/Step-by-step guide to building an I2C scanner with Arduino Uno on Velxio. Includes circuit wiring, code walkthrough, and debugging tips for hobbyists.Thu, 14 May 2026 05:00:47 GMThttps://velxio.dev/blog/posts/example-serial-led-control/https://velxio.dev/blog/posts/example-serial-led-control/A beginner-friendly tutorial on controlling an LED via Serial commands using Arduino Uno in Velxio simulator.Wed, 13 May 2026 05:00:44 GMThttps://velxio.dev/blog/posts/example-serial-echo/https://velxio.dev/blog/posts/example-serial-echo/A beginner-friendly tutorial on using Arduino's Serial library for USART communication. Build a serial echo project in Velxio's browser-based simulator.Tue, 12 May 2026 05:00:54 GMThttps://velxio.dev/blog/posts/example-lcd-hello/https://velxio.dev/blog/posts/example-lcd-hello/Step-by-step tutorial for wiring a 20x4 LCD to Arduino Uno and programming it with LiquidCrystal library in Velxio simulator. Includes circuit diagram, code, and debugging tips.Mon, 11 May 2026 05:00:55 GMThttps://velxio.dev/blog/posts/example-tft-display/https://velxio.dev/blog/posts/example-tft-display/Step-by-step tutorial for wiring and programming an ILI9341 TFT display with Arduino Uno in the Velxio simulator. Covers SPI connections, Adafruit GFX graphics, and animation.Sun, 10 May 2026 05:01:06 GMThttps://velxio.dev/blog/posts/example-simon-says/https://velxio.dev/blog/posts/example-simon-says/Build a Simon Says memory game with Arduino on Velxio. Learn arrays, debouncing, and game logic with LEDs and buttons.Sat, 09 May 2026 23:00:28 GMThttps://velxio.dev/blog/posts/example-rgb-led/https://velxio.dev/blog/posts/example-rgb-led/A step-by-step tutorial for controlling an RGB LED with Arduino PWM on the Velxio simulator. Includes circuit wiring, code walkthrough, and debugging tips.Sat, 09 May 2026 22:59:38 GMThttps://velxio.dev/blog/posts/example-serial-hello/https://velxio.dev/blog/posts/example-serial-hello/A beginner tutorial for Arduino serial communication using Velxio simulator. Includes circuit, code, and debugging tips.Sat, 09 May 2026 22:58:54 GMThttps://velxio.dev/blog/posts/example-fade-led/https://velxio.dev/blog/posts/example-fade-led/Step-by-step guide to fading an LED with PWM on Arduino Uno using the Velxio in-browser simulator. Includes circuit wiring, code walkthrough, and debugging tips.Sat, 09 May 2026 22:58:13 GMThttps://velxio.dev/blog/posts/example-button-led/https://velxio.dev/blog/posts/example-button-led/Step-by-step tutorial for a button-controlled LED circuit on Velxio. Covers wiring, code, pull-up resistors, and debugging tips.Sat, 09 May 2026 22:57:33 GMThttps://velxio.dev/blog/posts/example-traffic-light/https://velxio.dev/blog/posts/example-traffic-light/Step-by-step tutorial to build a traffic light circuit with Arduino Uno on Velxio. Includes circuit wiring, code walkthrough, and debugging tips.Sat, 09 May 2026 22:33:35 GMThttps://velxio.dev/blog/posts/example-blink-led/https://velxio.dev/blog/posts/example-blink-led/Step-by-step tutorial for the Arduino blink LED example using Velxio's in-browser simulator. Includes circuit wiring, code walkthrough, and debugging tips.Sat, 09 May 2026 22:32:55 GMT