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25 Nov 2014

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This project provides some lighting effect by the blinking pattern of the bulbs connected at its output. Up to 8 Bulbs can be connected in between connector CN2 to CN9 and AC power to control them should be connected at Connector CN10. DC Power should be applied at Connector CN11 in accordance with the polarity marked on this connector. Care should be taken while using this it as it contains Main Power on the board.

Microcontroller based running light controller - [Link]

25 Nov 2014

spi_diagram_good

Most Arduino SPI tutorials show this simple but poor SPI bus design. In this article a new approach is discussed.

Better SPI Bus Design in 3 Steps - [Link]

25 Nov 2014

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by Graham Prophet @ edn.com:

The MX100T from Aim-TTi (Aim Thurlby Thandar) is a 315W precision laboratory power supply’s three outputs can each provide 0 to 35 V at 0 to 3 A. Range switching extends the capabilities so that outputs can be set to 16 V/6 A or 70 V/1.5 A for maximum versatility; where higher power is needed from one output, internal switching circuitry enables up to 210 W arranged as either 35 V/6 A or 70 V/3 A.

All outputs are fully isolated and independent but voltage tracking can be selected to make two or even three outputs track a single voltage control. The isolated tracking capability is useful for creating tracking voltages to different ground points, tracking voltages of opposite polarity, or series and parallel connection of outputs.

Triple output lab power supply offers paralleling & tracking - [Link]

25 Nov 2014

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by umn.edu :

This project is to build a portable GPS geared towards runners (well, me and what I think a runner wants a GPS thingy for). It’s sponsored by the University of Minnesota’s ECE Envision Fund.

The hardware is basically complete, and the software is functional, if not polished. This is what the main screen looks like while tracking, with another image to show scale (though you can also reference the microSD card in the images further down):

Runner’s GPS build - [Link]


25 Nov 2014

IMG_3140

by theresistornetwork.com:

I recently got my hands on a pair of Flir Lepton thermal imaging sensors and have spent the last week bringing them online in my spare time. These are absolutely incredible devices that I believe will pave the way to consumer devices incorporating thermal imaging cameras. The footprint of the camera module (and optical assembly) is about the size of a dime. The resolution is 80×60 at 14bpp which is remarkable despite sounding low.

Flir Lepton Thermal Imaging Sensor + Gameduino 2 - [Link]

25 Nov 2014

IMG_20141117_205724-600x450

Sjaak posted pictures of his password manager build in the project log forum:

I was frustrated by trying to remember my passwords for all my websites and got even more frustrated when i need to change a password again after some months. Dont even to mention the needed complexity of them nowadays. A bit insired by the mooltipass featured on hackaday, but too scared of the complexity and hugeness of it, I decided to roll my own.
Also I’m not a terrorist nor a high placed public person, so I dont need that high encrypted and bulky design. Prolly the NSA would crack this thing in a matter of days (minutes?) but I think it will keep your pr0n logins safe from your little brother ;).

Password manager - [Link]

24 Nov 2014

apps3

An app note from Atmel, digital sound recorder with AVR and DataFlash (PDF!):

This application note describes how to record, store and play back sound using any AVR microcontroller with A/D converter, the AT45DB161B DataFlash memory and a few extra components.
This application note shows in detail the usage of the A/D Converter for sound recording, the Serial Peripheral Interface – SPI – for accessing the external DataFlash memory and the Pulse Width Modulation – PWM – for playback. Typical applications that would require one or more of these blocks are temperature loggers, telephone answering machines, or digital voice recorders.

[via]

Digital sound recorder with AVR and DataFlash - [Link]

24 Nov 2014

FZLXPGWI2Q1H6GS.MEDIUM

by FabricateIO @ instructables.com:

Smart lightbulbs cost your firstborn child. Which is a shame, because smart lights unlock tremendous potential for home automation, energy savings, and all sorts of cool projects.

If only there was a way to control your lights without breaking the bank…

And now there is! For $19 on Amazon, you can get a 4-lightbulb kit from China that ordinarily is limited to 4 channels from a single remote…but with some creative hacking, can be used to control an unlimited number of channels using an arduino and a very simple RF module!

Cheap Arduino Controlled Light Sockets - [Link]

24 Nov 2014

esp8266-reflash-firmware

by marc2203 @ importhack.wordpress.com:

I’m not going to explain in detail what is ESP8266 because if you have found this post I’m sure you already know it. But just in case, it is an awesome cheap board (less than 4$) with built-in wifi communication (802.11 b/g/n), and SPI, UART. You can also use its processor to run your code.

How to use ESP8266 ESP-01 as a SENSOR web client - [Link]

24 Nov 2014

obr1627_3

Internet is “good” not only for people but also for various devices (things), what we´re experiencing on every step. And that´s only the beginning ….

Term „Internet of Things – IoT“ is known already for several years and in general it addresses connection of various devices to internet. What´s the benefit of internet connectivity for various devices, sensors and other modules? It´s quite a lot, what IoT enables, for example:

  • remote data read out, practically from any place on Earth
  • remote control
  • diagnostics, watching and early prevention of faults
  • minimizing of physical control and service intervention to a given device
  • real-time evaluation and many other

A common feature of all „IoT“ devices is, that they are uniquely identifiable. A global expansion of internet caused, that technical equipment (for example Ethernet/ serial interfaces) enabling implementation of TCP/IP Ethernet or WiFi into a target device are available for affordable prices, so it´s relatively simple and affordable to add internet connectivity into a target device. Using this connectivity we gain a possibility to use a given device in virtually any environment and any country.
Already a small, easily usable module like for example Xport is, is able to provide a TCP/IP connectivity and provides a possibility to administrate a given device through a web server.

Internet of Things should be beneficial for both – producer and also for user (or administrator) of a given device. A user is prospering from an easy data collection through a practically everywhere-available network and a producer is in many cases able to diagnose or service given device within few seconds or minutes.
One of the biggest advantages of using internet as an “interconnecting element” is a possibility of unlimited expansion of connected devices and relatively simple data processing. Many smaller but also renowned companies already today offer a software development – customized for a given IoT application.
A characteristic feature of IoT is, that generated data originate from “things”, not from human as it is so far at the majority of nowadays internet content. Direct data transfer without human intervention increases accuracy, eliminates possible mistakes and mainly – saves human work and attention.

One of many ways how to IoT enable your device is to use some of common embedded microcomputers. UDOO, Embedded Artists, BeagleBoard, Raspberry Pi, Banana Pi and many other modules provide for an affordable price a considerable computing power, wide connectivity and intelligence to a target device. Finally, a display with a touch panel in connection with such a microcomputer usually creates a user friendly (HMI) interfaces. As a result, such a device is in majority of cases much more attractive for an end user. A brief comparison of some popular embedded microcomputers can be found here.
The newest term on this field is the „Internet of Everything“, i.e. internet connecting people, processes, data and things. Perhaps only the nearest future will show a real status, which can be influenced even by you – by a design of your devices.


Are you familiar with Internet of (every) Things? - [Link]



 
 
 

 

 

 

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