DIY Lorentz Force Experiment

electro-mag-swing

Fabian Gebhart shared his Lorentz Force experiment on Thingiverse:

Don’t you love it? Magnetism? Electronics? And 3d printing? In this project I combine all of them together to a little but spectacular do-it-yourself experiment. With just a few components and the 3d printed part you will be able to build your own Lorentz Force Experiment.

DIY Lorentz Force Experiment – [Link]

ams AS1383 A 200mA, 3.5MHz DC-DC Boost Converter

If you have a single Li-Ion battery powered application, then you need to think about using AS1383 in your design.

AS1383 is a DC-DC boost converter comes in a 6-pin WL-CSP package with 0.4mm pitch, a very small package suits the limited space applications. In the below image, you can compare the WL-CSP package with the 0805 SMD capacitor to know how small it is.

AS1383 And 0805 Capacitors
AS1383 And 0805 Capacitors

AS1383 uses 3.5MHz switching frequency and this high frequency allows the usage of a low profile inductor with only 1μH.

The input voltage range is from 2.7V to 5.5V and The output voltage range is from 2.7V to 5.0V with 200mA output current. It has an enable input pin to reduce the supply current to < 1μA.

AS1383 is available in three options:

  • AS1383-BWLT-AD an adjustable Vout version.
  • AS1383-BWLT-45 a 4.5V fixed Vout.
  • AS1383-BWLT-50 a 5.0V fixed Vout.

The output voltage in the adjustable version can be selected with external resistor divider connected to the FB pin.

The AS1383 price is 0.25$ for 1K order. Also, an evaluation Kit for AS1383 is available for 49$.

I obtained the schematic and the BOM from the evaluation kit manual.

Evaluation Kit for AS1383
Evaluation Kit for AS1383

 

The Schematic of The Evaluation Kit for AS1383
The Schematic of The Evaluation Kit for AS1383

 

The BOM of The Evaluation Kit
The BOM of The Evaluation Kit

Data sheet

Product page

Via: Mouser

It’s the end of C as we know it!

04-TIOBE

beningo.com discuss about the future of C language and it’s use in embedded systems.

The C programming language has been with embedded software developers since its creation in 1972. Ever since then C has been a blazing constant, surviving even the big push in the late 90’s and early 21st century to move to C++ or other object oriented languages. Undoubtedly, C will continue to be a foundational language for embedded systems but over the last year, the language has begun to see a decrease in popularity.

It’s the end of C as we know it! – [Link]

Bi-Directional Voltage Level Translator

20160706_VoltageLevelTranslator_002-768x512

Lukas Fassler from Soldernerd shares his experience designing a bi-directional voltage level translator and manufacturing the board with DirtyPCBs.

While most of my microcontroller designs run on 3.3 volts there is still the occasional 5 volt design. Or I do something with an Arduino. So the need may arise to interface between logic working at different voltage levels. There are several ways of doing this, depending on your needs. Things are relatively simple as long as you know in advance which side is transmitting and which side is receiving. It gets more difficult if the communication is bi-directional or with buses such as I2C that are bi-directional by nature.

Bi-Directional Voltage Level Translator – [Link]

Cheap homemade 30 MHz – 6 GHz vector network analyzer

xworking.jpg.pagespeed.ic.ubFwbq_xyS

Henrik Forstén has done amazing job designing a homemade vector analyzer with the goal to fit it’s budget of 200EUR. The design is open source and available on github.

Vector network analyzer (VNA) are used to measure scattering parameters of high frequency circuits. When frequency is high enough the reflections of the waves start to matter and distributed effects need to be taken into account. VNA can be used to analyze reflection and transmission coefficients of circuits at high frequencies.

Cheap homemade 30 MHz – 6 GHz vector network analyzer – [Link]

Projecta: A Solution For PCB Printing

e7be9c8aac8d671f0abbd6f0c5a6eaa9_original

Projecta, the Affordable & Faster PCB Prototyping Machine is going to launch their kickstarter campaign soon. Check the draft kickstarter page and feel free to post your feedback.

Projecta is an affordable desktop CNC machine optimized for making circuit boards in new innovative way.

Projecta: A Solution For PCB Printing – [Link]

Siglent oscilloscope SDS1102X review

20160726143721_SDS1102X
Harry Baggen @ elektormagazine.com reviews the Siglent SDS1102X oscilloscope.
Before we take a look at the instrument itself, I would like to say something about the characteristics of an oscilloscope for ‘small users’. What do you really need for your daily tasks? Even the cheapest models from Chinese manufacturers already have a sample rate of 500 MS/s or 1 GS/s, much more than what the typical electronics engineer needs. More important is the input bandwidth, which is an indication of the quality of the analog input stage, which, for example, could be 50 or 100 MHz. Most electronic engineers work on circuits with frequencies up to a few megahertz and then a simple USB scope with a sample rate of 100 MS/s and an input bandwidth of 10 MHz is already more than sufficient.

Siglent oscilloscope SDS1102X review – [Link]

Dual 90V/10A Unregulated Power Supply

IMG_1139

This project is designed to provide symmetrical output unregulated, high voltage, high current for your demanding needs.  Right choice for Audio Amplifiers, Power Drivers, Motor Drivers etc

Features

  • Input – maximum 65 VAC center-tap, 10Amp
  • Symmetrical unregulated, individually fused outputs
  • 10A bridge rectifier on board
  • LED indication for both the outputs
  • PCB mounted LUGS for connecting of input and output
  • Four mounting holes of 3.2 mm each
  • PCB Dimensions 154 mm x 84 mm

Dual 90V/10A Unregulated Power Supply – [Link]

Inkjet printing of text or photos as solar cells

20160801175325_Aalto-Dye

by Denis Meyer @ elektormagazine.com:

Research is in progress at the University of Aalto in Finland on the development of a process for inkjet printing of text, photos or any illustrations as solar cells. The idea is not new but these researchers are covering new ground which will allow the use of ordinary materials. According to Janne Halme: “The difficulty has been the development of solvents which are both clean and photovoltaic and give a good print quality”.

Inkjet printing of text or photos as solar cells – [Link]

Combo sensors fit wearable devices

Kionix KXG0708
Two combination accelerometer-gyro sensors, the KXG07 and KXG08 from Kionix, a subsidiary of Rohm, provide six axes of motion sensing. Both devices feature a configurable low-power architecture and a large 4096-byte FIFO buffer with timestamps for use in gaming systems, smart phones, and wearable devices. by   @ edn.com
Unlike conventional sensor signal-detection methods based on amplitude detection, the KXG07 and KXG08 use a proprietary phase-detection scheme that contributes to smaller designs, while enabling full high-speed operation of the onboard accelerometer, gyroscope, and temperature sensor at power consumption levels as low as 0.2mA, allowing for always-on operation. Each device offers I2C and SPI digital outputs with user-programmable gyroscope full-scale ranges of ±64°/s, ±128°/s, ±256°/s, ±512°/s, ±1024°/s, and ±2048º/s and user-programmable accelerometer full-scale ranges of ±2 g, ±4 g, ±8 g, and ±16 g.

Combo sensors fit wearable devices – [Link]