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[Neumi] over on Hackaday.IO wanted a simple-to-use way to drive stepper motors, which could be quickly deployed in a wide variety of applications yet to be determined. The solution is named Ethersweep, and is a small PCB stack that sits on the rear of the common NEMA17-format stepper motor. The only physical connectivity, beside the motor, are ethernet and a power supply via the user friendly XT30 connector. The system can be closed loop, with both an end-stop input as well as an on-board AMS AS5600 magnetic rotary encoder (which senses the rotating magnetic field on the rear side of the motor assembly – clever!) giving the necessary feedback. Leveraging the Trinamic TMC2208 stepper motor driver gives Ethersweep silky smooth and quiet motor control, which could be very important for some applications. A rear-facing OLED display shows some useful debug information as well as the all important IP address that was assigned to the unit.

Control is performed with the ubiquitous ATMega328 microcontroller, with the Arduino software stack deployed, making uploading firmware a breeze. To that end, a USB port is also provided, hooked up to the uC with the cheap CP2102 USB bridge chip as per most Arduino-like designs. The thing that makes this build a little unusual is the ethernet port. The hardware side of things is taken care of with the Wiznet WS500 ethernet chip, which implements the MAC and PHY in a single device, needing only a few passives and a magjack to operate. The chip also handles the whole TCP/IP stack internally, so only needs an external SPI interface to talk to the host device.

Talking about firmware for a moment, to ease deployment, the network configuration is handled by DHCP, although some control over MAC address assignment is promised for the future. All control is via UDP over ethernet, and again the basic functionality is there, but some niceties such as motor synchronisation and state querying are again subject to further releases. Hardware design is implemented in KiCAD and FreeCAD, with Arduino covering the firmware and host control side in python. You can read all about it on the Ethersweep project GitHub, what is there not to like?

If you thought you’d seen this stepper-mounted driver setup before, you’d be correct, here’s a Hackaday Prize 2017 Entry for a CANBUS controlled driver. We also saw this on Dummy: the obscenely well made robot arm by [Zhihui Jun], which if you missed it, then do circle back and take a look, you won’t regret it!

There’s a brand new device-to-device communication feature available now in the Arduino IoT Cloud. It’s something we’ve been working on for a long time. So we’re excited to see how it’ll add a whole new connected dimension to your Arduino projects.

Arduino IoT Cloud thing to thing communication

What is “Device-to-Device”? Communication?

Internally we’ve been looking at this feature as “device-to-device” communication. It will allow your Arduino devices to send wireless messages to each other, without writing a single line of code or spending time with radio modules and network protocols.

Using this feature you can link variables of the same data type between two or more cloud-enabled devices. For example, one button could set three smart bulbs to the same color. Or you could turn on a heater when temperature sensors in your room or outside in your weather station drop below a certain level. Being able to sync variables gives you an intelligent way to control multiple devices very easily.

Whether you use an Oplà IoT Kit, a MKR WiFi 1010, a Nano 33 IoT or an (upcoming!) Nano RP2040 Connect, you can configure everything from the web interface. After configuration, any changes you make to variables on one device will be reflected promptly on the other(s). This creates a seamless, powerful and secure two-way communication with almost no effort on your part, and no code required. The Arduino IoT Cloud handles authentication, security, network disruptions and any other tricky parts. 

What Does This Mean For Your Projects and Devices?

It means there are lots of options with thing-to-thing communication (also known as variable synchronization):

  • Collect sensor readings from remote devices.
  • Actuate devices remotely. For instance, pressing a button on one Arduino turns on an LED or motor on another.
  • Create a distributed algorithm where multiple devices collaborate with each other.

Are you thinking about home automation? Interactive installations? Monitoring and controlling machines from a wireless panel? This powerful new feature makes all those things easy to achieve for makers of all abilities.

Arduino Cloud thing to thing dashboard.

Combined with IoT Cloud’s dashboards this delivers a powerful new way to build incredible automations with minimal (if any) changes. Furthermore, it gives you smartphone control of your connected boards via the existing Arduino IoT Remote iOS and Android apps.

If you want to be one of the first to try it out, grab an Arduino IoT Cloud subscription. After that, just make sure you’re signed up to the Arduino newsletter to hear about other new features.

The post It’s easier than ever to add two-way communication to Arduino devices appeared first on Arduino Blog.

We are very happy to announce the Arduino PRO Gateway for LoRa!

Combined with Arduino MKR WAN 1300 IoT nodes, it makes an ideal solution for a wide range of applications, like smart agriculture, smart cities and building automation – and many other remote monitoring use cases requiring long range, low power wireless connectivity.

The gateway can be used globally and enables multiple channel management. By supporting advanced features like Listen Before Talk (LBT), it allows users to transmit at higher power on the first free channel, achieving longer ranges than conventional gateways for LoRa. 

Arduino continues its mission of making complex technology easy enough for anyone to use. Customers of the Arduino PRO Gateway will be given exclusive beta access to the Arduino IoT Cloud, which makes installation, provisioning and remote management of the gateway incredibly simple through the popular Arduino Create cloud platform.

The gateway features the advanced Embit EMB-LR1301-mPCIe module, hosted by a Raspberry Pi 3 B+ SBC, in a rugged aluminum enclosure. The gateway comes pre-installed with an optimized packet forwarder and a carrier grade Network server for LoRa WAN that is running on the Arduino Cloud provided by A2A Smart City (part of the A2A Group).

Technical Specifications

  • Chipset: Semtech SX1301
  • Modulation: LoRa Spread Spectrum, FSK, GFSK 868MHz (EU) / 915MHz (US)
  • Number of Channels: 8 LoRa Channels
  • Operating Frequency: 868MHz (EU) / 915MHz (US)
  • Frequency Range: 860MHz to 1020MHz
  • Operating Temperature: -40°C to +85°C
  • RF Output Power: Up to +27dBm
  • Sensitivity: Up to -137dBm
  • Interfaces for the LoRa Module:  mPCIe (SPI / I2C / UART / GPIOs) :
  • Dimensions: 71x40x1mm
  • Operating Voltage: +5V
  • Additional Features:
    • Listen Before Talk (LBT) Capability (for improved transmission power management),
    • On-board uFL antenna connector
    • FPGA support for LoRa Spectral Scan

 

The Arduino Pro Gateway for LoRa (868 MHz , EU version) can be pre-ordered from the Arduino Store.

Nov
16

Ardupower

gallery, network, power line, telnet Commenti disabilitati su Ardupower 

It’s a power stip driven remotely through an Ethernet network using telnet protocol.
The password and tcp parameters are saved in eeprom.
The user can give names to the six power out, that are also stored in eeprom.

Visit the page of [bigjohnson] on his site.



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