how do you make it

this looks very neat ! Adding GPS and some collision avoiding sensors to this project will surely make it fascinating ! Is this project still under development ?

what is the difference between rx62 and rx63?

Yes, Robot Operating System is running on a PC and simulated an iRobot Create, then controlled the actual vehicle.

The book and other course materials are at: webpages dot uncc dot edu/~jmconrad/EducationalMaterials/index.html

what is the book he is referring to is there a link available for that book?

Thanks for the lecture from Egypt

Way to go Dr C.

ROS? U mean the operating sys?

I think it's equivalent to the buffer being in RAM and then the recording being put into a permanent storage. Anyway, the point is to allocate memory while recording so you have somewhere to put the digitized audio, and you just need 'enough' space ... but when you want to store it you don't want it taking more space than it has to, so you allocate exactly the amount of space you need, which you now know how much is because you've finished recording the audio.

what degree program would be best at uncc to get into the robotic industry.

given perfect range data . its still down to higher decision on which way to turn whose goal is the final destination. Or it could be just to map, to explore , to seek desirable objects, food. cheese and biscuits. we need to make robots that can use our debris for their profit.

Great lecture!

I'm a bit perplexed by your memo recorder example. For example, where is the "buffer" array? I must have missed where you allocated that in memory. Then you seem to be re-sizing the buffer array until the recording stops--and then, once the recording stops, you malloc memory for the recording? But haven't you already recorded the data in the buffer array?

Don't forget to test for a null pointer from your calls to malloc...you might be out of memory and you'll have a problem when you try to assign to the memory you *thought* you got back!

At 8:10, it seems like the #define macros for LED_ON and LED_OFF are reversed. The way you have it is pretty common of course, but if you are talking about the LEDs for this particular board, the logic seems to be reversed. Section 6.3 in the user manual says this: "There are12 user LEDs (see table 6-3) that are connected to IO ports and will light when their corresponding port pin is set low." Therefore, wouldn't you be better off reversing the logic you used here?

I am confused here actually. Why are you *reading* the Data Register (DR), instead of the PORT register? In the text on page 18/19, in order to read from the switches, you do this: if (PORT4.PORT.BIT.B0 == 0) // check to see if switch 1 is pressed PORTD.DR.BIT.B0 = 1; // turn on LED Yet at the 1:03:00 mark you are reading from DR. That doesn't make sense to me. Also, that code on page 18/19 is a bit odd and didn't work for me. So I re-wrote it. It's on pastebin at: vHYrvewf

Awesomeeee

Excellent classes :) Would use it for my class

Thank you very much,But i don't under stand in page 3 that timers 8 bits Register (4 available) & 16 bits register (2 Available) i don't under stand what you meant by (2&4 available). Thank you

really.. very useful

lecture 21 and 23 please

Good job, really interesting...

I am very confused right now ,on some forums people say that ISR don't return value, on 36:45 on a state ISR has a returning value. Can you explain me about returning ISR?

SUBSCRIBED!!! Thank you for the taped lectures on Embedded Systems Dr. Conrad.

you are best sir...........

yeah I love it!

Great Job!

Dr Conrad, Where I can find the homework solution?

What a great teacher! If engineering professors were more like this, engineering would find a whole world a new devotees. One can only dream...

thank you alot

very helpful!

great job :) I like the way of teaching much better than my lecturer :( greeting from Malaysia :D

Is it possible to ask the guy sitting close to the mic to be quiet in forth coming sessions? ;)

In VietNam , we just learn it for 3 weeks .I and my friends can not do anything in that time. And how about you.???

sir i am computer science student and i want to learn embedded systems so is it ok that i start learning with these lectures or i should have some basic knowledge?

Thanks You

Great lecture, thank you!

dear Sir, You can use English subtitle for your video, My english is poor, i''m from Vietnam

I made the LED port bit directly equal to the opposite of the button port bit without the use of the if statement, as in - PortD.DR.bit.B0 = ! (Port4.DR.bit.B0) Would this work?

Embedded Systems are really cool.

Very good!

this is an incomplete clip, what are you trying to show?

I'm the third view and I'm not in your class. Great series.

Are those control registers separate entities in the cpu and connected to common with regular registers bus or they are alias to latter ones? They seems not shipping Renesas board to Ukraine...(

You're not covering protocols and network hardware. Why they are not in the course program?

what best book there is that covers OS internals?

Excelent lecture.. Just a question.I want to begin a trainning on robotics, but only stationary robots, I mean, welding, painting, palletizing, picking, etc. Does your lectures contains the topics I need to start in robotics? Regards,

Dear, James! How "while(1) {sleep;}" loop works? How interrupts relate to it? What wakes it up and puts back to sleep? Looks like it by itself there without any purpose.

Where is lecture 23 "Watchdog Timer, Brownout, and Robust Software Development" ?