I had always been interested in RTOS, and I got the opportunity to take the freeRTOS course following the ARM Cortex-M course. I was able to learn in detail about tasks, semaphores, mutexes, and more, and it was great to solidify my understanding through hands-on practice. Also, it was excellent how you explained how to utilize and apply these features through various examples like the MP3 Player. However, if I had to mention something disappointing, I felt that some lectures weren't quite smooth. Sometimes the lecture would end in the middle of speaking, and some lectures started with practice without theory, which was confusing. But there weren't many such videos, and I could understand and move on by rewatching the lectures. I binged the lectures during Chuseok, so there are parts I didn't understand 100%, but I should watch the lectures multiple times to fully understand everything before moving on. Thank you for uploading such a great course!