Are you familiar with my NanoHubs? Tiny, penny-sized USB hubs you can use to add additional USB ports in incredibly cramped spaces, like hacking projects or mobile devices? Whereas the original NanoHubs were all USB 2.0, limited to 480Mbps, this new NanoHub allows for transfer speeds of up to 5.0Gbps, as well as up to 3.0A of power delivery. The cut-off connector boards allow you to test your application before soldering it into your product, reducing the size of the hub from 27x34mm (about 1.1×1.3″) to 20x20mm (4/5ths of an inch on each side), with an overall thickness of just 1.55mm (1/16″).
Christian @ hackaday.io build his own USB Hub based on GL850G IC:
I was looking to make a custom USB Hub for a project but I couldnt find any of them that worked and using the chip GL850G. The chip is pretty old and cheap, but in my case I didnt need to use any of the fast transfering USB3, probably the next version can be based on this schematic.
Opensource USB HUB – [Link]
Imagine if a bit of data can be stored in a single atom or a small molecule, then massive volumes of data can be stored in a tiny amount of space. This theory was the topic of a research tries to develop a new method to store data magnetically in atoms.
As the magnetization of an atom can only be in one of two directions, theoretically we can magnetize the atom to be logical ‘1’ or ‘0’. But in the Practical application, this may be difficult because of some obstacles. At first we have to find a molecule that stores the magnetic information permanently, not only for a short period of time. Also it is difficult to attach such molecules to a fixed surface in order to construct a storage medium.
They developed a molecule that contains a dysprosium atom at its center, surrounded by a molecule frame that serves as a transport vehicle. This molecule is deposited on a surface of silica nanoparticles and fused by annealing at 400 degrees Celsius. The scientists showed that these atoms can be magnetized and can maintain their magnetic information.
The magnetization process currently only works at around minus 270 degree Celsius, and can be maintained for up to one and a half minute. The scientists are therefore looking for methods that allows it to be stabilized at higher temperatures and for longer periods of time.
For this research project, ETH scientists worked with colleagues from the Universities of Lyon and Rennes, Collège de France in Paris, Paul Scherrer Institute in Switzerland, and Berkeley National Laboratory in the USA.
You can find the full research here.
Monitor and log water quality (pH & ORP) and temperature from everywhere.
Instead of performing regular checks with tester kits to maintain adequate pH and chloride levels in our (small) swimming pool, I decided to build a project that monitors the water continuously and registers the data online so I can easily inspect it.
Pool Buddy – Monitor your pool water quality – [Link]
Earlier this month, the multifunctional autonomous mobile robots “AMY A1” and “AMY M1” had been launched as the first batch of products of AMY Robotics. Amy Robotics is an innovative technology company focusing on research and development of service robots that enhance quality of life with robotic technologies, products and services.
Both AMY Robots are intelligent mobile-service robots characterized with speech interaction, autonomous navigation, home automation, SDK and Cloud platform service that is powered by sophisticated AI technology and cloud computing. They can understand speech and make conversation with people in noisy environment, recognize specific people, follow a person in front of them and move to a place autonomously.
Features of AMY Robots:
- Cloud Platform Service
AMY Robots capabilities are empowered by cloud platform and can be upgraded and extended continuously.
- SDK, Open platform for developers
Android development environment access to robot hardware and capabilities. Amy can provide remote healthcare consultation service via telepresence, daily health tips, health data management, medicine reminder and more.
- Home Automation
Amy robots provide environment perception, security patrol and monitoring, and smart home management enabling you controlling home appliance with voice commands.
- Autonomous Navigation
Amy knows well at indoor positioning. She can move from a location to another autonomously and safely with obstacle avoidance.
You can control the robot with video communication through Amy’s client application. It provides you boundless connection with your family, colleagues and friends through virtual presence at any time anywhere.
- Speech Interaction
Amy is powered by intelligent language processing engine which support multi-lingual speech interaction, far distance (5m range) recognition in noisy environment. Amy can help you access massive on-line knowledge base with speech. You can have hand-free robot operation (play music/video, take picture, set volume, robot movement control, intelligent reminder etc).
AMY A1 and AMY M1 are 1.1 meter robots weighted 15 kg with 10.1″ screen head and up-to 0.5 m/s moving speed. They are running based on 8-core ARM CPU+4 core Intel CPU using 20Ah 14.8V battery, which can last for 8 hours. With its 5 meters pick-up range microphone, AMY can be controlled using voice commands like “Hello Amy, follow me” and “Hello Amy, go to the kitchen with me”. However, The M1 has an additional laser sensor, wider detection range, higher localization accuracy, and supports function customization.
electrobob @ electrobob.com tipped us with his latest teardown of a battery powered Bosch glue pen. He writes:
On the right side we can see the fuse and a IRF3711Z 6mΩ 20V HEXFET driving the heating element. At the glue melting end there is no temperature sensor, they are probably relying on the positive thermal coefficient of the heating element to achieve a rather stable temperature, as the manual quotes “approximately 170 °C”. Also there is a step up converter – used to generate ~12 V to drive the gate of the tranzistor, to keep it in the low ohmic region.
Bosch glue pen teardown – [Link]
Pastilda is an open-source hardware password manager, designed to manage your credentials in a handy and secure way.
Pastilda works as a middleman between your computer and keyboard. It provides easy and safe auto-login to your OS, bank accounts, mailboxes, corporate network or social media. Pastilda stores encrypted passwords in its memory. You can request a particular password at any time by pressing a special key combination on your keyboard.
Pastilda: Open-source Hardware Password Manager – [Link]
Alek Kaknevicius @ ti.com discuss about load switches and the advantages of intergrated switches over discrete ones.
The most common approach to load switching solutions is to use a Power MOSFET surrounded by discrete resistors and capacitors; however, in most cases using a fully integrated load switch has significant advantages. While both discrete and integrated load switching solutions perform the same basic function (turn on and turn off), distinctions exist, such as the transient behavior and total solution size. This application report highlights many drawbacks and limitations of a discrete switching solution and discusses how they can be overcome with an integrated load switch.
Our friends on educ8s.tv uploaded a new Arduino tutorial. Let’s check it out.
Dear friends welcome to another Arduino Tutorial! Today we are going to take a first look at this very promising new shield for Arduino, the Arduino Easy Module Shield! Also we are going to build a couple of projects with it. Let’s get started!
Arduino Easy Module Shield Tutorial – Is this the best Arduino Shield – [Link]