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6 Oct 2014

esp8266eval-600x450

by dangerousprototypes.com:

Ray Wang has been experimenting with the ESP8266 Serial-to-WiFi module, which has gained much hype recently. “The module is very compact, easy to interface with, and inexpensive. I wrote an Arduino program to show how to use the Arduino to communicate with the WiFi module and set up a very simple web server.” Check out the blog post at RaysHobby.

First impression on the ESP8266 serial-to-WiFi module - [Link]

6 Oct 2014

nixie-600x398

Kevin Rye writes:

I’m in the very early stages of prototyping a nixie clock. I picked up some MJE340 power transistors to switch on some IN-3s. I can then use a digital pin on my Arduino to turn on the IN-3s through the transistor. I’ll then have myself a blinking colon for my nixie tube clock.

[via]

Flashing a Nixie with an Arduino - [Link]

6 Oct 2014

IMG_20141002_155652-600x449

The Arduino and Cloud-based homebrewing controller by Martin Kennedy of TheBedroomLaboratory:

It’s just a basic site, based on this Scotch.io tutorial, which is currently plotting the temperature in my sitting room. It’s got a PHP backend (Laravel framework with RESTful API), MySQL database and an AngularJS frontend with (n3-chart/d3 for the graph). In the house, I’ve whacked together a quick breadboard circuit which comprises of an Arduino clone, a DS18B20 Temperature Sensor (with resistor for the i2c connection) and an ESP8266 module. Every minute, this wireless sensor POSTs the temperature to our REST API. This value is saved in the database and will appear in the graph whenever the page is opened. To hook it up to a fermenter, the sensor would just be placed in a thermowell in the fermenter bucket so we can see the beer temperature over time.

[via]

Brewmonitor: The Arduino-powered, cloud-based homebrewing controller - [Link]

5 Oct 2014


Who is the winner of new WIZ550S2E-232 module from Wiznet? In addition to getting to know the winner, you can also watch the video record from webinar…

“Hardwired TCP/IP” instead of a software solution? The result is higher performance and reliability. You could find this out during webinar about Wiznet modules.

From all of those who filled in our questionnaire after webinar we have drawn the winners of WIZ550S2E-232 module. The winners are:

  • Rastislav Michalek from Applied Precision s.r.o.
  • Roman Kasprzewski from DOMIQ Sp.z o.o.
  • Roland Kovacs from Robert Bosch kft.
  • Christian Baitz from Harbach
  • Martin Šustík from URC Systems
    Congratulations to the winners.

    More about WIZNET…

    Did you miss our webinar?

    If you missed this webinar, watch the video record…

SOS webinar: Internet of Things by one chip - [Link]


4 Oct 2014

cg-320

by Ben Coxworth @ gizmag.com:

While keeping batteries small and light is definitely a factor with electronic devices in general, it becomes particularly important when dealing with wearable electronics such as smart glasses. With that in mind, Panasonic has just announced its CG-320. Measuring 20 x 3.5 mm, it’s being billed as “the industry’s smallest cylindrical shaped rechargeable Lithium Ion battery.”

The CG-320 weighs 0.6 grams, has a nominal capacity of 13 mAh, a nominal voltage of 3.75 volts, and a maximum charging voltage of 4.2 volts. It also has a stainless steel exterior case, designed to prevent swelling.

Panasonic’s tiny new battery is destined for the wearables market – [Link]

4 Oct 2014

by Applied Science @ yoututbe.com:

I describe how some materials can change temperature when a magnetic field is applied to them.

Magnetic refrigeration: How does that work?! - [Link]

4 Oct 2014

by EEVblog @ yoututbe:

What’s inside the new FLIR TG165 Visual IR Thermometer / Thermal Camera using the new Lepton sensor?
How does it compare to the FLIR ONE & FLIR E4?
Does it have a calibration shutter?
Does it have any extra capability built in ready to be hacked?
How easy is it to open? (SPOILER – it’s a BASTARD!)

EEVblog #669 – FLIR TG165 Thermal Imager Teardown - [Link]

4 Oct 2014

by TheSignalPathBlog @ youtube.com:

In this episode Shahriar takes a detailed look at an Agilent (Keysight) E4407B ESA-E Spectrum Analyzer. The instruments reports an “Unlock LO” error message which prevents internal alignments from being performed. Before the repair process can begin, the firmware of the instrument must be updated. The firmware upgrade requires the installation of additional flash memory ICs which is presented in the video. The main processor board with its various components are also described in the video.

The complete block diagram of the spectrum analyzer is presented with a detailed look at the principle of operation of the instrument. All the main functional blocks such as the YIG Oscillator, Phase Detector, LO Path, LO Amplifier, Charge Pump, Pre-tune segments, digital circuits, IF and LO paths are analyzed both in schematic and on the PCB. Several potential faults are investigated and measured.

Teardown, Analysis and Repair of an Agilent E4407B ESA-E Spectrum Analyzer - [Link]

4 Oct 2014

LinearTech

by elektor.com:

The single LTC6268 and dual LTC6269 FET-input op amps from Linear Technology feature a tiny (3 fA typical) input bias current at 25°C (peaking at 4 pA max over the entire –40°C to 125°C temperature range). Their input characteristics make them a good match for photodiode, photomultiplier and other applications using high impedance, high speed sensors. The low distortion output signal can be used by an A/D converter. A shutdown feature lowers power consumption when an amplifier is not in use.

High Speed Trans-impedance Amp - [Link]

3 Oct 2014

12W_Amp

This project is intendant for use as low frequency class AB audio amplifier.

Project is built around TDA2006 PENTAWATT package. TDA2006 provide high output current and has very low harmonic cross-over distortion. Further the device incorporates an original (and patented) short circuit protection system comprising an arrangement for automatically limiting the dissipated power so as to keep the working point of the output transistors within their safe operating area. A conventional thermal shutdown system is also included. The TDA2006 is pin to pin equivalent to the TDA2030.

12W Audio Amplifier - [Link]



 
 
 

 

 

 

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