New win!

It looks like I've my lucky days now. SOS Electronic who is a regional electronic parts distributor, just notified me:

"Dear valued customer,
thank you for your interest. I´m glad to announce you, that you´re one of winners of the new SHT31 sensor. Please let me know which version you´d prefer as a free sample (analog or digital). "

I went for the digital. Waiting to arrive.

We are talking about this puppy:

http://www.sensirion.com/en/products/humidity-temperature/humidity-temperature-sensor-sht3x/

I just hope, it will come on a breakout board, otherwise I should enhance my QFN soldering skills.

CNC Motor Driver 8. - V2 Testing

On the weekend, I finally get to run the first test on the V2 MOSFET driver.
I just connected it to the bench PSU, and the MCU, added a resistive load (a 470Ohm/5W resistor) to it. Switched on, and...
Nothing happened.
Looked around, trying to find the error.
On the input, the PWM signal was there.
On the low side small FETs the signal was there.
On the MOSFET's gate... nothing was there.
I turned the board to see the soldering side...

Idiot!
After soldering the MOSFET and the diode, it started to work perfectly.

Bench Power Supply - Died

My Bench Power Supply died today. I tried to work with it and the CH2 went to CC mode immediately. When I turn the knob on it without load I can measure maximum 0.5V on it.
I've to find a schematic diagram for it (or just try to repair without it).

CNC Motor Driver 7. - New giveaway

It looks like the jury of the Hackaday.io likes my project. A new week passed by, and I received a new giveaway from them. I got a $50 giftcard from the Shapeways. I still think what can I do with it now. Actually as my 3D Printer is nonfunctional, it should be spent wisely.
As Mike Szczys from Hackaday said:
"I hope you'll use for your Hackaday Prize build"
I was thinking, what would be useful specially for this project. Than I decided. The controller will be fitted into the original control box of the CNC machine. Because it will require some metalwork to fit in the large display I intend to use, and the metal cutting in this case will involve some hand tools like my Dremel, it will produce not so nice looking edges. This should be covered somehow.
So I'll design, and order some custom made plastic frame for my display to get a nice look after the metalwork.
And again, encourage everybody with bright project ideas to build and share on Hackaday.io. You will not regret it. Good for you, good for the community.

Multimeters

Some time ago I stopped to use cheap mostly Chinese multimeters. For most of the guys who is working with electronics it happens time to time, that something is required to measure around the household mains supply.
Anybody, who think this kind of multimeters, are good enough for them, definitely should see this video:

CNC Motor Driver 6. - WIN!!!

This project is also available on the hackaday.io. And I also submitted it to the Hackaday Prize 2015 competition (this time I intend to finish this project, not as my last year entry).
The Hackaday is giving away things to the participants of the competition every week. This week they given away 125 Teensy LC board for the participating projects.

And, I'm one of the lucky ones (maybe not lucky just my work is soooo good - joking).
Anyhow, it is great, thank you guys!

And, I encourage everyone, who fill that he/she works or would like to work on great projects/ideas, to register on hackaday.io and share his/her work there.

The Grid

This is one of the biggest scam of the internet era, or the solution for my never done, never worked websites. I intend to find it out.

Thay claim to build websites based on AI technology instead of army of designers.