Sometimes you learn about an interesting IC and you build an entire circuit around it for no other good reason… This project is one of those!
The TPS2378 is an IEEE802.3at (Power over Ethernet) Powered Device controller, featuring internal pass MOSFET for loads up to 25.5W, Type 1 (a.k.a. 802.3af) compatibility and auxiliary power source support.
The IC is normally used together with a DC-DC step down regulator to power a network device (the PD) from a PoE compliant switch or injector (the PSE). A proper 802.3at device requires an isolated power supply with some safety characteristics that makes it not trivial to implement, and there are many DC-DC ICs with integrated PoE controller to make it easier, but as I wasn’t really interested in that part I just went for an easier project with just the PoE controller and some ballast… And what better ballast than some high power white LEDs!
Power over Ethernet Flashlight - [Link]
Arduino WebRadio player is an inexpensive WebRadio player that can plays internet audio streams up to 64-kbps and is based on mp3, aac and wma audio formats.
The main components are:
- Arduino Pro mini board
- ENC28J60 ethernet module
- VS1053B mp3, aac, wma decoder
- 84×48 dot matrix LCD module (Nokia 5110)
Arduino WebRadio player - [Link]
by Warren Miller @ digikey.com:
MCUs offer a very wide range of Ethernet connectivity choices. With most applications demanding Internet connectivity, it’s more likely than not that your next MCU-based design will need some type of network connection. Whether your next design is a sensor that needs to consolidate and communicate data over an Ethernet link, a network-connected security camera that needs to have periodic code updates sent via the network connection, or an industrial controller that needs to use a robust industrial Ethernet connection, your choice of Ethernet-enabled MCU will be critical in delivering the capabilities required for a successful design.
Understanding and Using Ethernet-enabled MCUs for Your Next Application – [Link]
Remote control your electrical devices through your local network or internet. The circuit contains one output (Relay) and one input (isolated input). The whole project was built by using arduino nano platform and an ENC28J60 ethernet module. It can be used the W5100 ethernet module instead of ENC28J60, by replacing the UIPEthernet library to Ethernet library.
Moreover, the control is made from the Android application I wrote and it’s available on Google Play (https://play.google.com/store/apps/details?id=com.serasidis.NetworkRelay).
The schematic diagram, arduino sketch, photos and demonstration video is on my web site:
Arduino Network relay - [Link]
Embedded modules may surprise you by their contribution and an overall costs savings.
As we know „embedded module“ is a quite wide term and it can represent a powerful microcomputer with OS, but it can also be a significantly simpler module with a microcontroller and peripherals, still able to add considerable functionality to a target device.
Typical representatives of useful modules, which add a lot – without big costs are so called quick start modules from company Embedded Artists. Their contribution is in a ready-made „tuned up“ PCB containing for example in case of module LPC4088 QuickStart Board (EA-QSB-016) the microcontroller itself (Cortex- M4), memory, display controller and many interfaces like Ethernet, USB, UART, SPI, CAN, PWM, Analog In/Out, I2C, XBee compatible connector and other.
Especially at low and mid-volume production batches their contribution is mainly in the fact, that it is a really proven solution with a guaranteed operating temperatures range, proper ESD protection and mainly – supported by a wide scale of development tools (free). In case of solving of problems, it´s still possible to contact customer support of company and a lot of hints for successful usage, source codes and libraries can be found directly on the producer´s website.
Try to go easier way - [Link]
by Edwin Chen @ open-electronics.org:
The model of this shield named Yun Shield, the feature of this shield is as its name. User can add this shield into Arduino (Leonardo, UNO, MEGA2560 etc) and “turn” the Arduino into device which has similiar features as Arduino Yun: support remote upgrade and use the Bridge library.
With this shield, user can easy to set up communcation between Arduino and Internet (via ethernet , wifi or 3g etc) and add support for USB flash, video. The detail user guide/ manual can be found in the dragino website and most Arduino Yun Sketch / examples can reuse with this Shield. This shield is under production and will be ready within one months time.
Add Linux, WiFi, Ethernet and USB to Arduino - [Link]
The Ethos lite is a tiny unmanaged Ethernet switch that has 5 ports, supports 10/100mb data rates on a board measuring just 1.75″ x 1.75″ and weighing only 15 grams. One primary area where the Ethos lite stands out is in situations where weight and power are high priorities such as Unmanned Aerial Vehicles or robotics. All 5 ports are fully shielded with magnetic couplers for common mode rejection meeting Ethernet wiring specifications. This allows designers the ability to skip the large RJ45 connectors and wire directly onto connected peripherals or place the connectors in a more flexible location.
The Ethos board can accept a wide range of voltage input from 5-15V making it an ideal fit for Unmanned Systems that provide battery power. The Ethos board can also double as a 3.3V regulator providing up to 1 Amp of current. Under full load (all 5 ports actively sending data) the Ethos consumes less than 2 Watts.
Connections to the Ethos lite are provided by Molex PicoBlade headers with one for each port and an additional connector for power. As an added feature the MDIO lines to the Ethernet switch IC have been exported allowing developers access to management data registers.
Included with the Ethos lite is the main board along with 6 Molex PicoBlade cables (5 with RJ45 connectors, 1 with bare wires for power). The Ethos lite costs $250 with the ability to purchase extra Molex cables in a variety of configurations.
Gadgetsmyth releases the Ethos lite – A tiny Ethernet Switch – [Link]
DM&P has been producing low-power, x86-based Vortex processors for the embedded market for over ten years. Now in a nod to the Arduino market they have released the 86Duino Zero, a low-cost Arduino Leonardo sized board powered by their latest 300 MHz SoC Vortex86EX Processor.
This is a fully static 32-bit x86 processor board compatible with Windows OS, Linux and most other popular 32-bit RTOS. It integrates a PCIE bus, DDR3, ROM controller, xISA, I2C, SPI, IPC (Internal Peripheral Controllers with DMA and interrupt timer/counter included). The 86Duino Zero’s ports include USB 2.0 host and device coastline ports, a 10/100 Ethernet port and a microSD slot on the bottom of the board. The Zero’s baseboard also provides a 7-12V power jack, a reset button and a PCIe expansion connector.
The Zero supplies 14 digital I/O pins, half of which can provide 32-bit resolution PWM outputs and six 11-bit analog input pins. Each standard I/O pin supplies 16 mA while the 3.3 V pins can supply up to 400 mA. Like the Intel Galileo development board announced several weeks ago the 86Duino Zero marries Intel architecture to the Arduino platform. Its $39 price tag makes it an attractive proposition. [via]
The 86Duino Zero Runs Linux on x86 - [Link]
Web-based relay controller for home automation.
Home automation is getting increasingly popular these days mainly due to reduced cost and simplicity through web or smartphone connectivity. Here’s a DIY version of web-based home automation controller that allows you to have a set of six relays connected to the end of a piece of Ethernet cable that can be accessed from a web browser anywhere from your house. You can use it to control or program the operation of lights, water pumps, or any other electrical appliances at home. The project uses Arduino (Atmega328) microcontroller and the ENC28J60 ethernet controller chipset.
Web-based relay controller for home automation - [Link]
drj113 @ instructables.com
Yep – One of those! This Instructable extends my Arduino Ethernet controller to control a set of up to 6 relays, but that’s not the neat bit. The neat bit is that there is a web based state machine in the AtMega chip so that the relays will operate in whatever sequence with whatever timing you want – all by themselves. This allows you to have a set of relays connected to the end of a piece of Ethernet cable that can be accessed from a web browser anywhere from your house.
A Remotely Programable Relay Controller - [Link]