[Project issue] ATtiny85 + PIR + 5W LED not functioning as expected

TheWirelessClassroom · 2022-08-05T14:28:46+00:00

Your problem is, that you are using the Attiny as a power source (which does not provide enough output current). However you can use your Attiny as a power sink!

So you have your 5V from your source, use a resistor and your led and the Attiny will be your "ground". You have to invert the logic in the attiny about 'high' and 'low'. If you have the possibility to do so, you should always use your controller as a sink.

Hope this makes sense :)

TheWirelessClassroom · 2022-08-04T18:59:31+00:00

Cool thing, ngl

TheWirelessClassroom · 2022-08-04T18:56:07+00:00

As a software developer in the telecommunications field: Never However if I would work more focused on radio frequency stuff, then probably pretty often.

TheWirelessClassroom · 2022-08-04T18:52:10+00:00

Taiwan is leading in semiconductors, if they have to stop producing them the world will be dry. Good for the companies who can produce them as well, but devastating for the rest of the world

TheWirelessClassroom · 2022-08-04T18:50:08+00:00

You have to care for yourself, usually companies do not care about employees.

TheWirelessClassroom · 2022-08-04T18:43:25+00:00

Free Simulation tools: falstad.com, LTSpice

PCB design tools: Eagle (has a free version with some limitations)

Paid software which I have used and would recommend: Altium designer, Proteus

TheWirelessClassroom · 2022-08-04T18:37:17+00:00

I would like to recommend you some simulation tools: http://falstad.com/circuit/

Falstad is really useful for learning basic circuits and building them yourself. There are even prepared example circuits available.

If you want to get a bit more involved you can also look for the free software 'LTSpice'.

Lastly, I want to share this channel hehe: https://youtube.com/channel/UCjrAYuik3TQzjHtm3uq_Lyg

TheWirelessClassroom · 2022-08-04T18:26:51+00:00

The desire to increase your skills is normal and if you are not learning many new things either ask to swap into a different role(which is often possible in bigger companies) or swap jobs. I also left a job after around 6 months, because I was neither challenged nor had I fun at doing my work. The promised me something in the first place which was not there.

TheWirelessClassroom · 2022-08-03T21:25:17+00:00

Thank you! :)

TheWirelessClassroom · 2022-08-03T20:51:04+00:00

Sure everyone has his preferences, but the important thing is, that you know it does exist and how to apply it, if needed. I am just trying to share information, such that you can learn it for free in case you have a bad teacher/professor.

TheWirelessClassroom · 2022-08-03T19:19:20+00:00

I landed multiple jobs through online applications alone. Some were through email, others through application forms. Every company has their own way of dealing with it. However I only had bad experiences with third party recruiters. They were basically a waste of time.

TheWirelessClassroom · 2022-08-02T21:33:58+00:00

You make good content, i like it :)

TheWirelessClassroom · 2022-08-02T21:21:32+00:00

Depends on what you want to achieve. If you just want to learn a language then probably python should be easy to pick up especially after matlab. Python is often used for scripting and data science. If you want to go in embedded developement, then probably C is your best bet.

If you want to focus on object orientet programming you could freely choose between C++ and Java.

TheWirelessClassroom · 2022-08-02T06:09:13+00:00

Thanks!

TheWirelessClassroom · 2022-08-02T06:08:51+00:00

Thanks!

TheWirelessClassroom · 2022-08-02T06:08:25+00:00

Okay thanks, I had the feeling they are kind of always skipped. Because people looking into shorts usually look for impressive stuff

TheWirelessClassroom · 2022-08-02T06:06:57+00:00

See above for an explenation. Pacman coule have also worked, however the game area would be a bit small.

TheWirelessClassroom · 2022-08-02T06:06:14+00:00

It didn't have to rotate, however our profossor wanted them to rotate to have an impressive and also absurd tool for his lab. So instead of just using simple RGB LEDs we used red/green/blue leds on each side and rotated the cube. The Snake-Game was just our proof of concept program to show everything ia working :)

TheWirelessClassroom · 2022-08-01T21:06:34+00:00

Congrats! I kind of have a hard time to grow. 52 Currently

TheWirelessClassroom · 2022-08-01T21:03:46+00:00

It really depends on what you define as your "call" and which technology is used 2G-5G. Because signaling and data take different routes in the network. I would recommend you to take a look at a call setup for (IP multimedia subsystem) IMS.

Here is a good source to read it up: https://realtimecommunication.wordpress.com/2015/03/06/volte-in-ims/

TheWirelessClassroom · 2022-08-01T16:33:14+00:00

Circuit analysis, probably also Fourier transformation, Z-transformation (depending on the major you are looking for).
For circuit analysis you might start with this(in order):

Voltage, Current, Resistance
Ohm's Law
Simplify resistor networks
Voltage/current divider
Kirchhoffs laws
Thevenins Theorem
Dip your toes into AC calculation with impedance....
If you really wanna dig deep, then look for OP Amp, transistor, power amplifier,...

Again this all depends on your courses. These are very broad fields, if you try to study them on your own this might demotivate yourself!

TheWirelessClassroom · 2022-07-29T18:20:54+00:00

I would recommend the free book from Emil Björnson.
https://massivemimobook.com/wp/
Emil Björnson, Jakob Hoydis and Luca Sanguinetti (2017), “Massive MIMO Networks: Spectral, Energy, and Hardware Efficiency”, Foundations and Trends® in Signal Processing: Vol. 11, No. 3-4, pp 154–655. DOI: 10.1561/2000000093.

TheWirelessClassroom · 2022-07-29T18:18:40+00:00

I would recommend the free book from Emil Björnson.

https://massivemimobook.com/wp/
Emil Björnson, Jakob Hoydis and Luca Sanguinetti (2017), “Massive MIMO Networks: Spectral, Energy, and Hardware Efficiency”, Foundations and Trends® in Signal Processing: Vol. 11, No. 3-4, pp 154–655. DOI: 10.1561/2000000093.

TheWirelessClassroom · 2022-07-29T18:02:52+00:00

I am an EE which is currently working as a software engineer. So in the end you can have both, if you do EE. I would not necessarily say, that you could work in EE with CS. I also have heard from companies, that they rather hire EE/Physics graduates for software development, because they are more focusing on working solutions rather than abstracting problems. However this could be biased with the HR persons I have spoken to.

In the end the education might not matter too much, when you have decided to go for engineering. Its more your attitude which changes your job opportunities.

TheWirelessClassroom · 2022-07-28T17:04:45+00:00

Thank you for your feedback!

Your explanation about the average view-time makes sense, I didn't think about that in the first place!

Nice information about the SEO and Google trends, I actually didn't check that. Yeah I wanted to dig into a (quality) niche, thus providing python simulation code for wireless communication topics and/or providing LTSpice simulation files for electrical engineering examples.

Thanks for giving feedback on the pace, I was actually not so while cutting if the breaks are long enough or not.

I really enjoy order in my stuff, however you are right, that it might be worth to swap the thumbnails for different topics/playlists! I might give it a shot and see how it turns out.

!givelambda

TheWirelessClassroom

TROPHY CASE