Waveshare has recently launched the RoArm-M2-S and RoArm-M2-Pro ESP32 robotic arms with four degrees of freedom, or 4-DOF for short. The main difference is that the RoArm-M2-S is equipped with standard servos, while the RoArm-M2-Pro features all-metal ST3235 bus servos, adding more durability and performance. Designed for educational and robotics applications, the 4-DOF RoArm-M2 is sturdy yet lightweight, built using carbon fiber and aluminum alloy. It can handle payloads up to 0.5kg and has a workspace diameter of 1 meter. The arm offers high precision with a 12-bit magnetic encoder and dual-drive technology for improved torque and stability. On top of that, it features a 12-bit magnetic encoder and dual-drive technology for improved torque and stability. Other features include a 360° omnidirectional base and support for both wireless (WiFi, ESP-NOW) and wired (USB) control. These features make this device suitable for various applications including industrial automation, education, research, and DIY robotics projects. Waveshare [...]
In recent years, tools such as the FlipperZero have become quite popular amongst hobbyists and security professionals alike for their small size and wide array of hacking tools. Inspired by the functionality of the FlipperZero, Project Hub user ‘andreockx’ created a similar multi-radio tool named the CapibaraZero, which has the same core abilities and even a little more.
The project uses an Arduino Nano ESP32 as its processor and as a way to provide Wi-Fi, Bluetooth Low-Energy, and human interface features. The chipset can scan for nearby Wi-Fi networks, present fake captive portals, prevent other devices from receiving IP addresses through DHCP starvation, and even carry out ARP poisoning attacks. Andre’s inclusion of a LoRa radio module further differentiates his creation by letting it transmit information in the sub-GHz spectrum over long distances. And lastly, the PN532 RFID module can read encrypted MiFare NFC tags and crack them through brute force.
This collection of the Nano ESP32, wireless radios, and a LiPo battery + charging module were all attached to a custom PCB mainboard while five additional buttons were connected via secondary daughterboard before the entire assembly was placed into a 3D printed case.
If you want to add a display to your Arduino project, the easiest solution will likely be an LCD or OLED screen. But though those are affordable and work really well, they may not provide the vibe you’re looking for. If you want a more vintage look, Vaclav Krejci has a great tutorial that will walk you through using old-school LED bubble displays with your Arduino.
Krejci’s video demonstrates how to use HPDL-1414 displays, which are what most people call “bubble” displays, because they have clear bubble-like lenses over each character’s array of LEDs. They were fairly popular in the late ‘70s and ‘80s on certain devices, like calculators. These specific bubble displays can show the full range of alphanumeric characters (uppercase only), plus a handful of punctuation marks and special symbols.
The HPDL-1414 displays Krejci used come on driver boards that set the characters based on serial input. In the video, Krejci first connects those directly to a PC via a serial-to-USB adapter board. That helps to illustrate the control method through manual byte transmission.
Then Krejci gets to the good stuff: connecting the HPDL-1414 bubble displays to an Arduino. He used an Arduino UNO Rev3, but the same setup should work with any Arduino board. As you may have guessed based on the PC demonstration, the Arduino controls the display via Serial.print() commands. The hex code for each character matches the standard ASCII table, which is pretty handy. That makes it possible to Serial.write() those hex codes and even Serial.write() the actual characters.
Don’t worry if that sounds a little intimidating, because Krejci has sample code that will let you easily turn any arbitrary array of characters into the serial output you need. Now you can use those awesome bubble displays in your own projects!
While Black Friday and Cyber Monday used to be a US-only event, it changed many years ago, and we’ve been writing about international Black Friday and Cyber Monday deals and coupon codes since 2014, since a large portion of our audience cannot benefit from promotions on Amazon’s Black Friday and Cyber Monday events that will take place from November 21 until December 2 this year. So I’ve gathered some international Black Friday and Cyber Monday 2024 deals and discount coupon codes from relevant manufacturers and popular online stores such as Aliexpress, Banggood, and others. Aliexpress Black Friday and Cyber Monday event Aliexpress’ Black Friday and Cyber Monday 2024 event has already started. There are three periods: Nov 19-21 PST – Warm Up event where users can find and add items to the cart before purchasing during the main event. Nov 22-30 PST – “On Sale” event with discounts up to [...]
Playing drums is a lot of fun, but drum sets are very big and very loud. They also aren’t cheap. Those factors keep them from being an option for many people who would otherwise be interested. Conventional electronic drum sets are much quieter and a bit more compact, but they still take up a fair amount of space and come with hefty price tags. That’s why Cybercraftics designed this DIY drum set mat that solves all of those problems.
This is an electronic drum set in the form of a flexible desk mat. It is affordable to build and can be tucked away in a closet or cupboard when not in use. It doesn’t have the same layout as a real drum set, but it can still help new drummers learn fundamentals like paradiddles. Those require a lot of practice to ingrain the motions into muscle memory and this mat makes it possible to run through the rudiments just about anywhere without loud noises disturbing anyone.
Cybercraftics designed this drum mat to work like a standard MIDI (Musical Instrument Digital Interface) input device, but with piezoelectric sensors instead of buttons. Those produce a signal when struck. They are analog signals and there are seven sensors, so this project uses an Arduino Leonardo board that has enough analog input pins. The Leonardo also has a Microchip ATmega32U4 microcontroller, which means it is configurable as a USB HID — handy for interfacing with whatever MIDI software you may want to use.
On the physical side, this is just two desk mats cut and glued together, which circular pieces covering the piezoelectric sensors. A small 3D-printed enclosure protects the Arduino.
If you’ve ever wanted to get into drumming, this may the opportunity you’ve been waiting for.
DFRobot’s EDGE102-DMX512 is a DMX512 lighting programming controller based on ESP32-S3 wireless MCU designed for efficient management of stage, theater, and venue lighting. With integrated WiFi and Bluetooth, the controller supports wireless programming and control, simplifying the setup of advanced lighting systems. It offers RS485 (master/slave modes) interfaces, I2C, UART, and GPIO pins for compatibility with a wide range of sensors and boards. This controller enables automation through sensor integration, supporting devices such as infrared detectors, sound level meters, and laser sensors. Its eight optically isolated industrial switch inputs ensure seamless compatibility with PNP sensors, allowing lighting effects to respond automatically to environmental inputs. By reducing dependence on manual DMX consoles, it is well-suited for automated lighting in theaters, stages, and commercial venues. EDGE102-DMX512 specifications: SoC – Espressif ESP32-S3 CPU – Dual-core Tensilica LX7 up to 240 MHz with vector instructions for AI acceleration Memory – 512 KB of internal [...]
At Cornell University, Dr. Anand Kumar Mishra and his team have been conducting groundbreaking research that brings together the fields of robotics, biology, and engineering. Their recent experiments, published in Science, explore how fungal myceliacan be used to control robots. The team has successfully created biohybrid robots that move based on electrical signals generated by fungi – a fascinating development in the world of robotics and biology.
A surprising solution for robotics: fungi
Biohybrid robots have traditionally relied on animal or plant cells to control movements. However, Dr. Mishra’s team is introducing an exciting new component into this field: fungi – which are resilient, easy to culture, and can thrive in a wide range of environmental conditions. This makes them ideal candidates for long-term applications in biohybrid robotics.
Dr. Mishra and his colleagues designed two robots: a soft, starfish-inspired walking one, and a wheeled one. Both can be controlled using the natural electrophysiological signals produced by fungal mycelia. These signals are harnessed using a specially designed electrical interface that allows the fungi to control the robot’s movement.
The implications of this research extend far beyond robotics. The integration of living systems with artificial actuators presents an exciting new frontier in technology, and the potential applications are vast – from environmental sensing to pollution monitoring.
How it works with Arduino
At the heart of this innovative project is the Arduino platform, which served as the main interface to control the robots. As Dr. Mishra explains, he has been using Arduino for over 10 years and naturally turned to it for this experiment: “My first thought was to control the robot using Arduino.” The choice was ideal in terms of accessibility, reliability, and ease of use – and allowed for seamless transition from prototyping with UNO R4 WiFi to final solution with Arduino Mega.
To capture and process the tiny electrical signals from the fungi, the team used a high-resolution 32-bit ADC (analog-to-digital converter) to achieve the necessary precision. “We processed each spike from the fungi and used the delay between spikes to control the robot’s movement. For example, the width of the spike determined the delay in the robot’s action, while the height was used to adjust the motor speed,” Dr. Mishra shares.
The team also experimented with pulse width modulation (PWM) to control the motor speed more precisely, and managed to create a system where the fungi’s spikes could increase or decrease the robot’s speed in real-time. “This wasn’t easy, but it was incredibly rewarding,” says Dr. Mishra.
And it’s only the beginning. Now the researchers are exploring ways to refine the signal processing and enhance accuracy – again relying on Arduino’s expanding ecosystem, making the system even more accessible for future scientific experiments.
All in all, this project is an exciting example of how easy-to-use, open-source, accessible technologies can enable cutting-edge research and experimentation to push the boundaries of what’s possible in the most unexpected fields – even complex biohybrid experiments! As Dr. Mishra says, “I’ve been a huge fan of Arduino for years, and it’s amazing to see how it can be used to drive advancements in scientific research.”
The Arduino Plug and Make Kit was designed to open up infinite possibilities, breaking down the idea that technology is a “black box” reserved for experts. With its snap-together system, this kit gives everyone – beginners and seasoned makers alike – the power to create and innovate without barriers. Forget being a passive user! With the Plug and Make Kit, technology is accessible and ready to bring your ideas to life.
Meet Giulio Pilotto, Plug and Make Kit Star
Giulio Pilotto is one of Arduino’s senior software engineers and works closely on Arduino Cloud projects. When we held a “Make Tank” workshop at our Turin office to showcase the potential of the Plug and Make Kit, he joined in with inspiration from a recent escape room experience.
The result was Riddle Treasure, a puzzle-based game that allows you to recreate the excitement of an escape room anywhere you are.
At this year’s Maker Faire, Pilotto had the opportunity to present Riddle Treasure at the Arduino booth. While he had showcased his own creations at previous Maker Faire editions, this time felt special: “The Maker Faire is always a wonderful high-energy event,” he says. “I was happy to represent the Arduino team as we focus more than ever on the community: all our products were presented in the light of what people can do with them.”
Riddle Treasure
To be honest, this is probably the most advanced project our in-house “Make Tank” came up with (so far!). After all, it has to be somewhat complicated to emulate intricate escape room puzzles! However, following Pilotto’s step-by-step instructions on Project Hub and leveraging the easy snap-together mechanism of Modulino nodes, anyone can recreate Riddle Treasure – or even invent a personal, unique variation.
The goal of the game is to unlock a safe. But to get there, you need to complete three steps in order.
1. Combination Lock: First, you must rotate the encoder in Modulino Knob like a safe’s combination lock. When you hit the right position, one of the lights on Modulino Pixels turns from red to green. When you get all five LEDs to turn green, you can move on to the next step.
2. Secret Sentence: Use the banana cables to connect the words in the panel. When you get them all in the right order to form the secret sentence, a password is revealed on the LED matrix of the UNO R4 included in the Plug and Make Kit.
3. Final Unlock: Input the password via Modulino Buttons, and watch the safe unlock!
We take care of the complexity, so you can simply plug into tech!
Arduino has done the hard work so you can play and have fun even with deliberately complex projects like this one.
“Building this without having to solder, or even worry about settings or any electronics aspect at all, is a game changer. With Plug and Make Kit, Arduino has already selected and optimized the Modulino sensors: all you have to do is put them together to get started on your ideas,” Pilotto says.
You’re managing a network of IoT sensors that monitor air quality across multiple locations. Suddenly, one of the sensors goes offline, but you don’t notice until hours later. The result? A gap in your data and a missed opportunity to take corrective action. This is a common challenge when working with IoT devices: staying informed about the real-time status of each device is crucial to ensure smooth operation and timely troubleshooting.
This is where Device Status Notifications, the latest feature in the Arduino Cloud, comes in. Whether you’re an individual maker or an enterprise, this feature empowers you to stay on top of your devices by sending real-time alerts when a device goes online or offline.
What is “Device Status Notifications?”
Device Status Notifications allow you to receive instant alerts whenever one of your devices changes its connectivity status, whether it’s going offline or coming back online. You can customize these alerts for individual devices or all devices under your account, with the flexibility to exclude specific devices from triggering notifications.
We announced it a while ago, Arduino Cloud already supports Triggers and Notifications, allowing you to create alerts based on specific conditions like sensor readings or thresholds. With the addition of Device Status Notifications, you can now monitor device connectivity itself. This means you can now receive an alert the moment a device loses connection, providing a proactive way to manage your IoT ecosystem. For more details on the original feature, check out our Triggers and Notifications blog post.
Key benefits for users
Real-time monitoring: Get notified instantly when a device disconnects or reconnects, helping you take corrective actions promptly.
Customization: Configure your alerts to focus on specific devices or apply rules to all your devices, with the flexibility to add exceptions. You can also decide when the notification should be sent — either immediately upon a status change or after a set period of downtime.
Convenience: Choose to receive notifications via email or directly on your mobile device through the Arduino IoT Remote app, making it easy to stay informed wherever you are.
How to set up Device Status Notifications
Video link
1. Set up a Trigger
Go to the Triggers section and select “+ TRIGGER”
2. Choose “Device Status” as your condition
Decide whether to monitor the status of:
A specific device (select “Single device”), or
Any device (select “Any device (existing and upcoming)”).
If you select “Single device,” you can choose the device that you want to be monitored.
If your selection is “Any device,” you can add exceptions for devices you don’t want to trigger the alert.
3. Configure what you are going to monitor
Choose whether to monitor when the device goes online, offline, or both. Then decide if the notification should be sent immediately or after a set period (options range from 10 minutes to 48 hours).
4. Customize the notification settings
Notifications are configured in the same way as any other Trigger. You can add the action of sending an email or a push notification to your phone via a push notification on the Arduino IoT Remote app.
Ready to test Device Notifications?
Want to make sure your IoT devices stay connected and functioning? Start using the Device Status Notifications feature today. Simply log in to your Arduino IoT Cloud account, and configure your notifications to stay informed whenever your devices go online or offline.
Make sure you’re on a Maker, Enterprise, or School plan to access this feature.
Create Your Own Bot (CYOBot) v2 is an open-source, modular robotics platform for students, educators, hobbyists, and future engineers based on the ESP32-S3 microcontroller and featuring up to 16 servo motors for complex control. The CYOBot v2 is a follow-up to the previous quadrupedal robotic platform from the same company. It adds new features such as a modular design, an upgrade to the ESP32-S3 chip, more motor channels, and an expansion block with more peripherals. It also supports integrating AI systems, such as ChatGPT, for added functionality. The CYOBot supports up to three configurations via the CYOBrain — which powers the robotics platform and controls the servo motors — and separate 3D-printed components. The CYOBot Crawler is a four-legged robot powered by eight 180-degree servo motors. The CYOBot Wheeler form factor features four 360-degree motors linked to wheels at the end of each leg and is essentially a hybrid between [...]
At Arduino, we believe coding should be accessible to everyone – including the youngest learners. With this in mind, we’re thrilled to announce that the Arduino Alvik robot now officially supports block-based coding!
Coding has never been easier thanks to Alvik’s seamless integration with mBlock, one of the most widely used platforms for educational hardware, available in both desktop and web-based versions compatible with Chromebook, MacBook, and Windows PC. With mBlock’s intuitive block-based coding and Alvik as a tangible, interactive robot companion, elementary students and teachers can explore robotics, mathematics, astronomy, and other engaging projects.
With the release of the public beta version of the integration in mBlock, Alvik’s new features and improvements will be implemented over time based on feedback from educators.
Beyond coding: bringing all areas of learning to life
Alvik provides a unique, hands-on learning experience. This makes it the ideal tool for elementary-aged students who benefit from interacting with something they can see, touch, and control. They can get immediate feedback on their commands and see the robot’s reactions and movements in real time.
But Alvik is more than just a gateway to coding; it’s a multidisciplinary tool that can enrich learning across all subjects. This classroom companion truly reflects the spirit of STEAM education, enabling teachers to bring learning to life in creative and often unexpected ways.
Teaching abstract concepts to elementary-aged students can be tough. However, young children grasp abstract concepts and problem-solving skills more effectively when “learning becomes more hands-on, tangible and interactive”. This is where physical tools like Alvik can make a significant difference.
Through Arduino’s engaging Block-Based Coding and Robotics lesson, children can program their Alvik to perform an array of exciting tasks. These step-by-step project-based activities cover a diverse range of subjects, allowing students to convert abstract concepts into concrete, relatable experiences. This immersive approach is a great way to nurture kids’ natural curiosity and deepen their understanding of challenging topics and ideas.
And it doesn’t stop there. With LEGO® Technic compatibility and M3 screw connectors, Alvik becomes a canvas for creativity. Students can customize and decorate their robot for special occasions like Halloween and Christmas, blending art design with engineering and making the learning process even more personal and engaging.
With Alvik, kids aren’t just learning to code – they’re learning to think creatively and critically, and explore a wide range of subjects in a way of solving real-life tasks.
Why choose Alvik with block-based coding for primary school?
1. Enhances engagement with a child-friendly interface – Based on the popular Scratch platform created by MIT, mBlock is crafted specifically for elementary-aged students. With its game-like elements, vibrant colors, and instant visual feedback, block-based coding lowers the entry barrier and makes programming fun and engaging for learners of all ages.
2. Builds confidence at an early age – Block-based coding helps eliminate common frustrations like syntax errors, which can hinder young learners in text-based programming. Instead, students experience early success as they watch the Alvik robot follow their commands – boosting their confidence and love for creating more.
3. Makes interdisciplinary learning easy – Following the lessons available in Arduino’s dedicated online platform, elementary-aged teachers could enhance the students’ knowledge of various subject matters through playing and hands-on creative projects.
4. Simplifies abstract concepts – Abstract coding concepts such as loops, conditionals, and variables can be difficult for young students to grasp. Block-based coding provides a visual and interactive way to understand these concepts. Blocks represent specific functions and operations, making abstract ideas more concrete.
5. Supports the transition to text-based coding – Block-based coding with Alvik isn’t just a fun starting point – it’s a bridge to more advanced learning. As students advance, they can easily transition from blocks to text-based coding languages like MicroPython with a simple click of a button. This seamless shift lets students build on their skills and dive deeper into the world of programming at their own pace. And you won’t have to worry about purchasing separate hardware either, as students can program their Alvik robot by following the lessons in Arduino’s Explore Robotics in MicroPython course.
6. Supports Chromebook –The mBlock web platform works across Chromebooks, Windows PCs, and MacBooks, so students and teachers can jump into their projects on any device, anytime.
A wealth of support at your fingertips
We know that stepping into the world of coding can feel like a challenge, especially for elementary teachers without a computer science background. That’s why Alvik comes with free access to dedicated learning resources with project-based lesson plans, step-by-step tutorials, and engaging activities. These are currently available in English, Italian and Spanish, with more lessons coming soon. Utilizing both Alvik and mBlock means teachers can lead their students into the world of coding and robotics (and beyond!) with confidence.
Ready to get started?
With Arduino’s strong reputation for innovation and mBlock’s child-friendly platform, we’re combining our strengths to make learning robotics and coding more engaging and enjoyable than ever before.
Are you ready to inspire the next generation of innovators? Bring the joy of coding into your classroom with Alvik!
Vcc Labs’ Nova is a tiny, open-source hardware Raspberry Pi RP2040 development board with a USB-C port, a 70 (7×10) addressable RGB LED matrix, and two 12-pin GPIO headers for expansion. It can be used for wearables, mini-displays, interactive art, fun games, and more. Nova specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ up to 133 MHz with 264KB SRAM Storage – 2MB QSPI flash “Display” – 7×10 WS2812 addressable RGB LEDs, each measuring just 1x1mm USB – USB Type-C port for power, data, and programming Expansion – 2x 12-pin header with 20x GPIO, 2x SPI, 2x I2C, 2x UART, 4x ADC, Vin, 5V, 3.3V, and GND Misc – Reset and BOOT buttons Power Supply 5V via USB-C port 7V to 18V via Vin pin Power consumption – 9 Watts with all LEDs at full brightness Dimensions – 30.48 x 20.32 mm (PCB only) Weight – 4.76 grams [...]
We’re thrilled to announce that Arduino Education has been shortlisted for the Bett Awards 2025, this time in the AV, VR/AR, Robotics, or Digital Device category with our Alvik robot! This recognition highlights our dedication to innovation, inclusivity, and the advancement of practical STEM education.
The Bett Awards celebrate leading-edge technology in education, with entries evaluated on key criteria such as innovation, curriculum suitability, online safety, research evidence, customer support and more.
About the Alvik robot
Alvik is an adaptable, lifelong learning robot that supports educators and students as they transition from block-based programming to text-based coding using MicroPython and Arduino language. It enables them to explore robotics and tackle real-life challenges with comprehensive learning content. However, Alvik isn’t just designed to teach programming and robotics; it can also enhance students’ understanding of topics like mathematics and astronomy, along with other engaging projects. Alvik’s curriculum-aligned course makes it an ideal fit for today’s classrooms, empowering students with hands-on skills and a strong foundation in STEAM.
But what truly sets Alvik apart from other educational robots is its limitless potential for customization. Students and teachers can easily add external sensors using the I2C Grove and Qwiic plug-and-play connectors, eliminating the need for soldering or complex wiring. Additionally, the LEGO® Technic and M3 screw connectors encourage hands-on creativity, allowing users to build custom components and further expand Alvik’s capabilities.
We’re honored to be recognized once again, and we can’t wait to attend Bett in just a couple of months. The winners will be announced at the Bett Awards 2025 Ceremony on January 22nd at The Brewery, London. We look forward to seeing you there!
Good designers prioritize the user experience — particularly the experience of users with disabilities that affect their perception and fine motor skills. A young person without disabilities, for example, may feel that jars are easy to open, while an elderly person with reduced hand strength may have the complete opposite experience. To help designers better understand the experience of people living with disabilities related to hand dexterity, a team of graduate students from Keio University and the University of Maryland developed DexteriSync.
DexteriSync is an exoskeleton-like device worn on the hand. But unlike most exoskeletons, DexteriSync reduces the user’s ability instead of expanding it. It does so via thermal manipulation. If you’ve ever had numb hands following a snowball fight, you know how much the cold can affect your dexterity. In fact, skin temperature is one of the biggest factors related to hand and finger dexterity. By controlling the user’s skin temperature, DexteriSync is able to induce a reduction in dexterity and that could be useful to designers that want to make their products accessible to those living with disabilities.
DexteriSync is able to cool the wearer’s skin by pumping cold water through tubes attached to the 3D-printed exoskeleton frame. Copper contacts on the tubes help to make the thermal transfer more efficient. Peltier coolers remove heat from the pumped water, with an Arduino UNO Rev3 board controlling that process and monitoring the water temperature with a K-type thermocouple paired with a MAX6675 amplifier.
The team performed two user studies to evaluate DexteriSync. The first was intended to test the dexterity of users. The goal of the second was to determine if DexteriSync could affect user thermal perception. Both studies found that DexteriSync did have a noticeable effect.
The T-Display S3 AMOLED Plus is an upgraded development board based on the ESP32-S3 microcontroller with a dual-core LX7 processor. It features a 1.91″ AMOLED display with a 240×536 resolution, using RM67162 IPS AMOLED technology for sharp colors and full viewing angles with QSPI interface support. Similar to the LILYGO T4 S3 launched last year, […]
Wouldn’t it be great if, while playing a virtual reality game, you could feel the heat of a fire on your arm? Or the cold of chilly water? Engineers around the world have been trying to make that happen, but there is a big problem: temperature changes are slow. The immersive effect diminishes when the thermal feedback lags behind the virtual cause. That’s why a team from South Korea’s Gwangju Institute of Science and Technology turned to motors to dramatically speed up the process.
The Flip-Pelt wearable device relies on Peltier elements to create heating and cooling effects, which is a common strategy for thermal feedback. Peltier elements use electricity to produce thermal transfer, heating one side of the element while simultaneously cooling the other side. By placing a Peltier element against the skin, it is possible to create a cooling or heating sensation on demand.
But it takes a long time to reverse the thermal transfer — changing a side of the Peltier element from hot to cold is too slow to be useful for VR thermal feedback. So, the Flip-Pelt prototype doesn’t even bother. Instead, it keeps the Peltier elements going in just one direction and physically swaps the side of the elements that touch the user’s skin.
The prototype Flip-Pelt device contains eight Peltier elements arranged in two rows along the inside of the user’s forearm. Eight servo motors, controlled by an Arduino Nano 33 IoT board, can flip the elements from the cool side to the hot side in response to events in the VR world. The Arduino also controls the Peltier elements themselves through H-bridges, so it can adjust the power going to each.
While this is relatively complex, it does create almost instant changes in perceived temperature.
For the fourth year in a row, RAKwireless is participating in CNX Software’s Giveaway Week, and this year, the company is offering the Blues.ONE IoT development kit with LoRaWAN, LTE-M, and NB-IoT connectivity and 500MB of cellular data through the Blues NoteCard. The devkit can be used to prototype or develop IoT devices for industrial automation and asset-tracking applications and relies on the WisBlock modular IoT prototyping system with the RAK13102 WisBlock Blues Notecarrier, the Blues NoteCard, a WisBlock Base Board, and a WisBlock Core module. Blues.ONE kit content: RAK4631 WisBlock Core Module based on Nordic Semi nRF52840 Arm Cortex-M4F microcontroller @ 64 MHz with 1 MB Flash, 256 KB RAM, Bluetooth Low Energy 5.0 protocol stack Semtech SX1262 LoRa Transceiver with LoRaWAN 1.0.2 protocol stack RAK19007 WisBlock Base Board with 4x sensor slots, 1x IO slot, a USB Type-C port, a rechargeable battery connector, and a solar panel connector [...]
OPC Unified Architecture – OPC UA in short – is a cross-platform, open-source machine-to-machine communication protocol for industrial automation. It was developed by the Open Platform Communications (OPC) Foundation and is defined in detail in the IEC 62541 standard.
Step-by-step guide to setting up OPC UA on Arduino Opta
It’s as simple as uploading a single sketch onto your Opta and connecting it to an Ethernet network. Once uploaded, the OPC UA firmware exposes the Arduino Opta’s analog and digital inputs, the user button and LED (only Arduino Opta WiFi), as well as its relay outputs as properties that can be read from or written to using OPC UA. OPC UA communication is performed using OPC UA binary encoding via TCP sockets.
Arduino_OPC_UA is a port of the Fraunhofer open62541 library implementing IEC 62541 in highly portable C99 for both Windows and Linux targets. One serious challenge during the porting of open62541 was to decide on sensible tradeoffs concerning RAM consumption, as using OPC UAs full namespace zero (NS0) requires up to 8 MB of RAM while the STM32H747 powering the Arduino Opta has a total of 1 MB of SRAM to offer – some of which already allocated by the the Arduino framework for the Arduino Opta.
Expand functionality with Arduino Opta Modules and OPC UA integration
Additionally, Arduino_OPC_UA supports the automatic discovery, configuration and exposure as OPC UA objects of the recently released Arduino Opta expansion modules. Currently three different expansion modules exist: Arduino Opta Analog Expansion (A0602), Arduino Opta Digital Expansion with electro-mechanical relay outputs (D1608E), and with solid-state relay outputs (DS1608S). During system start-up, the Arduino Opta’s expansion bus is queried for connected expansion modules and automatically configures them and brings them online for interfacing via OPC UA.
You can extend the default OPC UA server to add additional OPC UA properties such as data collected from a sensor device connected to the Arduino Opta. As a demonstration, we’ve created an example showing how to collect temperature and humidity data from a Modbus RTU device (connected to the Opta’s RS485 port) and subsequently expose this data via OPC UA properties.
The M5Stack Module LLM is yet another box-shaped device from the company that provides artificially intelligent control without internet access. It is described as an “integrated offline Large Language Model (LLM) inference module” which can be used to implement local LLM-based solutions in smart homes, voice assistants, and industrial control. Module LLM is powered by the AX630C SoC, equipped with 4GB LPDDR4 memory, 32GB storage, and a 3.2 TOPS (INT8) or 12.8 TOPS (INT4) NPU. M5Stack says the main chip has an average runtime power consumption of 1.5W, making it suitable for long-term operation. It has a built-in microphone, speaker, microSD card slot, and USB OTG. The USB port can connect peripherals such as cameras and debuggers, and the microSD card slot supports cold and hot firmware updates. The M5Stack Module LLM joins the list of other offline, on-device LLM-based solutions, such as the SenseCAP Watcher, Useful Sensors’ AI in [...]
The USB Insight Hub is a USB testing tool based on the ESP32-S2 wireless SoC made by Ecuador-based company Aerio Solutions SAS and aimed at developers and tech enthusiasts. The Insight Hub connects to a computer via a USB Type-C port and expands it to three downstream ports, each with a 1.3-inch color display screen that displays information about the serial device such as its assigned enumeration name, voltage, and current. The enumeration name displayed helps to identify all virtual ports running through the Insight Hub. This feature is quite handy when multiple devices are connected. Although the hub features a Wi-Fi-enabled SoC, it doesn’t currently support wireless networking. Each downstream port is connected to a dedicated voltage and current meter for real-time feedback. Also, the hub implements configurable short-circuit, over-current, and back-current protection. It also allows you to control the individual activation and deactivation of the D+/D- data lines [...]
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compatibility and M3 screw connectors, Alvik becomes a canvas for creativity. Students can customize and decorate their robot for special occasions like Halloween and Christmas, blending art design with engineering and making the learning process even more personal and engaging.
