Embedded Systems Online Training Resources

Online learning of embedded system and electronics in general still bounded, and this is mainly related to the nature of hardware it self. Anyway, efforts for embedded systems training/learning continue to appear especially with MOOC platforms like Coursera and edX.

In this blog post, i’m not going to talk about MOOC online courses. I’m going to share with you some of dedicated online training centers and university programs for embedded systems.

Online University Certifications:

1-Embedded Systems Engineering Certificate from UCI:

The course schedule has variety of courses that focus on embedded system programming, logic design using VHDL and FPGA, real time systems, motor control and embedded linux.
The brochure contains informations about the fees as the following:
Course fees (4.5 prerequisite, 9 required and 6 elective units) $4,800, textbooks $1,350 , candidacy fee $125 and the total estimated Cost $6,275.
UCI had also created the “An Introduction to Programming the Internet of Things (IOT)” specialization on Coursera.

[Embedded Systems Engineering Brochure]
[Overview]

2-Master of Engineering in Embedded Systems Degree from Arizona State University:

I think it’s one of very rare online master degree for embedded systems.

[Program Information]

Training Centers:

1-DOULUS

DOULUS focuses mainly on ARM (DOULUS is an ARM Approved Training Center), logic design and embedded linux. They also present a  free online webinar on a regular basis.

[Training] [Webinars]

2-Feabhas

Feabhas focuses mainly on programming embedded systems. They have a variety of embedded C/C++ courses beside other ARM and RTOS courses.

[Course list]

3-Opersys

Opersys was founded by Karim J. Yaghmour, the author of Embedded Android and Building Embedded Linux Systems books. The training courses is about embedded Linux and embedded Android.

[Training]

4-Baylibre

Another training center which focuses on embedded linux and embedded Android.

[Training]

Diode or MOSFET as a Reversed Voltage Protector

Diode or P-channel MOSFET is what you need to protect your circuit from applying reversed voltage, according to a nice video published on Afrotechmods channel.

Method 1:Diode

RVmethod1

The simplest way is to use a diode in series with main power supply. When you connect the power source right, the diode anode is connected to positive side and the cathode will take the ground from the rest of the load which is connected to the ground.

The downside of using this method is the heat generated from the diode.
wasted power=Vf*current

So if we use a normal diode like 1n4007 for 2A:

wasted power=0.85*2=1.7W

RVmethod1_2

If you connect the power source in reverse, then the diode will be off, thus protecting the circuit.

 

Method 1 (enhanced):Schottky Diode

In this way we can reduce the amount of power dissipated by the diode, as long Schottky Diode have a lower forward voltage compared with a normal diode.

 

Method 2:P-channel MOSFET

RVmethod2

You can use P-channel MOSFET like FQP47P0. In this method, when the power supply is connected properly, the Vgs is negative (you need to be above the threshold). When we power on the device, Vs is connected to Vd through the body diode of MOSFET and the MOSFET is on, the equivalent resistance between drain and source is very near to zero, for example Rds(on)=0.026ohm for FQP47P0.

wasted power=I*I*R=2*2*0.026=0.104W

Method 2 (enhanced):P-channel MOSFET with Zener

RVmethod2_2

In this method, we protect the MOSFET from applying Vgs with a limit that exceeds the breakdown voltage.

What Will Happen to Moore’s Law in 2021?

Moore’s law states that the number of transistors doubles every two years. Rachel Courtland from IEEE Spectrum explained the sharp turn of Moore’s law in 2021.

Moore2021Chip manufactures will switch to another way of boosting the density in the chip by having multilayer chips using vertical geometry, and we’ve already seen the 3D concept in silicon chips like 3D NAND Flash. According to 2015 roadmap released by International Technology Roadmap for Semiconductors (ITRS), by 2021, shrinking the dimensions of transistors in microprocessors will not be desired economically by chip makers, although the report of 2014 predicted that the physical dimensions would continue to shrink until at least 2028.

According to the article, the spirit of Moore’s Law could still there, where some changes in the technologies will still lead to pack more transistors in a given area.

Rachel also mentioned  that first international Rebooting Computing conference will be held in October this year 2016. It’s “Other ITRS participants are expected to continue on with a new roadmapping effort under a new name” Rachel said.

[Article on IEEE Spectrum]

Dual Adjustable Regulated power supply 1.2V TO 37V DC

IMG_1075

This project is a solution to power up most of devices or projects requiring dual (+/-) adjustable power supply. The circuit is based on LM317 positive and LM337 negative voltage regulators. LM3X7 series of adjustable 3 terminal regulators is capable of supplying in excess of 1.5A over a 1.2V to 37V DC output range. On board TO220 Package with heat sink can handle maximum load current. Board provided with two on board preset to adjust the voltage.

Dual Adjustable Regulated power supply 1.2V TO 37V DC – [Link]

Constant Current Sources

What are Constant Current Sources? Find out how they work and why they are useful. Try the circuit!: http://goo.gl/BRpqnD

Constant Current Sources [Link]

Projecta – Affordable & Faster PCB Prototyping Machine

A.Qadry @ Intelligent Minds tipped us with their latest project, a PCB prototyping machine. They are going to crowdfund the project soon so if you are find it cool you can follow them on their facebook page.

There are mainly two ways in talking about manufacturing, if you are going for a mass production by sure you will use photo-resist dry-films or you can use CNC engraving, Ink- transfer or even 3-D printing during prototyping but in this very first phase you need a fast & easy to use method to produce your prototypes and test your idea without expensive equipment, so that’s why we introduce this affordable machine to the market.

The creative idea we applied in Projecta is we cover the PCB board with any available metallic marker and the machine engraves the ink layer to produce a very high resolution image as resulted in photo-resist dry-films. We are going to a crowdfunding campaign for the mass production and wait your support!

Projecta – Affordable & Faster PCB Prototyping Machine – [Link]

shred-Buddy3D Recycler – Multi Material pelletizer & Cutter

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Recycle Plastic Materials like a few meter leftover 3D Printer material or even Plastic Bottles into Pellets to create new Objects.

Do you own a 3D printer like most Maker and DIY’ler? 

almost run out of filament? … Again? What to do with the last few meters?

well… Make Pellets/Granules of it and use these to create new Filament with an Filament Extruder or an DIY Pellet extruder.

shred-Buddy3D Recycler – Multi Material pelletizer & Cutter – [Link]

LT8335 – Converter minimizes quiescent current

lt8335col_1

Outfitted with a 2-A, 28-V power switch, the LT8335 2-MHz step-up DC/DC converter from Linear Technology operates from an input of 3 V to 25 V, suitable for applications with input sources ranging from a single-cell lithium-ion battery to automotive inputs.

The LT®8335 is a current mode DC/DC converter capable of generating either positive or negative output voltages using a single feedback pin. It can be configured as a boost, SEPIC or inverting converter consuming as low as 6μA of quiescent current. Low ripple Burst Mode operation maintains high efficiency down to very low output currents while keeping the output ripple below 15mV in a typical application. The internally compensated current mode architecture results in stable operation over a wide range of input and output voltages. Integrated soft-start and frequency foldback functions are included to control inductor current during start-up. The 2MHz operation combined with the small 8-lead DFN package, enables low cost, area efficient solutions.

LT8335 – Converter minimizes quiescent current – [Link]

Information storage at one atom per bit; a 1kB atomic memory

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A team of scientists at the Kavli Institute of Nanoscience at Delft University has achieved what may represent a limit in information storage density by creating a memory in which a single bit is represented by a single atom. By Graham Prophet @ edn-europe.com:

Specifically, the team created a 1 kByte memory array where each bit is represented by the (physical) position of one single chlorine atom. This equates to 500 Terabits per square inch (Tbpsi), 500 times better than the best commercial hard disk currently available. The team, led by the Institute’s Sander Otte, reported their work in Nature Nanotechnology on Monday July 18, 2016.

Make your own Attiny2313 development board

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In this tutorial you will learn how to build a basic development board for Attiny2313 microcontrollers.

Did you ever want to make your own development board with microcontroller and you didn´t know how .In this instructable I will show you how to make it.All you need is knowledge in electronics, designing circuits and programming.

Make your own Attiny2313 development board – [Link]