Новини світу мікро- та наноелектроніки

So I made this 3S Balance charger that uses three TP4056 modules and three 230VAC to 5V DC modules so that they can work together and charge eatch string of cells individually, this makes it so that every time you charge your battery you make sure that it will be balanced once fully charged and no cells can stop charging before they are fully charged like with a normal chargers. And the best part is this is scaleable to how many strings you want even a 100s1p pack. Every module have to have an personal galvanically isolated power source so if you don't have 5V power supplies you can use three phone adapters instead using the usb port. It's very important that the power supplies are isolated from eatch other, you can't use one power source for all three modules. I don't remember exactly why but if i am not mistaken the GND is chared by the input and output making it impossible to series connect the output if you parallel the input making a shortcurcuit. submitted by /u/Whyjustwhydothat [link] [comments]

XMax Inc of Commerce, CA, USA (formerly Nova LifeStyle Inc) — which designs, sources and distributes contemporary furniture but has diversified to also developing and providing artificial intelligence software and platform-based services — has agreed to acquire Hexa Creation Inc, a US-based company focused on 1200V vertical gallium nitride (GaN) power semiconductor technology for AI data-center power infrastructure and other high-voltage applications...

A desktop satellite never leaves the desk, but it behaves as if it were about to launch. The prototype collects and logs environmental and motion data, exactly as it would on a suborbital flight. The result is a compact electronic platform that shows how far a sensing system can be shrunk without losing any functions.

The heart of the system is an ESP32-C3 Mini, which acts as the main controller. Two sensors are entrusted to it: a BME680 for temperature, humidity, atmospheric pressure and gas resistance, and a BMI323 that adds a 3-axis accelerometer and gyroscope. The sensors talk to the ESP32 over an I²C interface, a choice that keeps the number of wires low and simplifies the wiring.

Record-breaking weight and size

The numbers tell the story of the project’s philosophy well. The prototype weighs 21 grams, below the initial target of 30 grams. Its dimensions are 28 × 28 × 33 mm, a volume that fits in the palm of a hand. To reach this result, connectors, PCB material, wiring and mechanical structure were all reduced, while the sensing and computing functions were kept intact.

Every gram saved counts, because in a future real launch weight translates directly into cost and complexity. Miniaturisation is not just an aesthetic matter: it is proof that a complete telemetry system can fit in a minimal volume.

Dashboard and flight data management

A software dashboard monitors and stores the measurements collected by the sensors. The system organises the recorded flight data into files that can be viewed, downloaded or deleted. This structure makes it possible to analyse the readings after a test session, without having to keep the satellite connected to a computer during acquisition.

The workflow is simple: start the collection, the satellite logs the data, then download the files for analysis. Having a dashboard also makes the system suitable for anyone who wants to experiment with long acquisitions or with changing conditions.

• ESP32-C3 Mini as the main controller
• BME680 for temperature, humidity, pressure and gas
• BMI323 for acceleration and rotational motion
• I²C bus to connect the sensors to the controller
• Software dashboard to monitor and archive the data

The project shows how an electronics platform inspired by satellites can be built from easily available components. Those who want to dig deeper can look at the maker’s site, where the details of the system are available. The development board used is a compact solution for IoT projects, suitable for anyone who wants to replicate the prototype or start from a similar base.

The desktop satellite is not meant for space, but to prepare the ground for those who will go there. The combination of environmental and inertial sensors covers the basic needs of a flight experiment: pressure, temperature, humidity, gas, acceleration and rotation. At 21 grams, the system leaves room for larger payloads or bigger batteries in a possible future launch.

Source: https://circuitdigest.com/news/barely-21-grams-this-satellite-prototype-tracks-the-environment

Related products

• Mini ESP32-C3 module

The post A Desktop Satellite with the ESP32-C3: 21 Grams of Telemetry appeared first on Open Electronics.

I made a Power supply board to get more experience with ecad. It connects directly to 230VAC main via the plug on the bottom left. The plugs on the right output 48/24/12/5/3.3/1.6V DC with a small webinterface via ESP32-S2 for switching and checking voltage and current. PCB & schematic files are avalable here (Altium files): https://github.com/Timo-Hauser/POWERPANEL-HW I will use the PCB in my Mini Rack with my Raspberry Pi inside. I cheated a bit by stepping down the ac with a LRS-150-24 module so its DC-DC only. I would love to get some feedback on the Schematics as well as the PCB layout. I choose the parts mainly based on availability at JLCPCB and tried to avoid any tht parts. I'm aware I could buy this premade for cheaper but it was fun so far. Rail Source Rated 24 V Mean Well LRS-150-24 brick, through a TPS16630 eFuse 2.5 A 48 V LM5156H boost from the 24 V bus 1 A 12 V LMR51450 buck 3 A 12 V fan LMR51450 buck, feeds 4 × 4-pin PWM fan headers 3 A 5 V LMR51450 buck, TPS2557 current-limited terminal switch 3 A 3V3 LMR51450 buck 2 A 1V6 buck from 5 V 1 A Also for those that care I did work with AI on the project. submitted by /u/Timo-Hauser [link] [comments]