How LoRa (ExpressLRS) Drone Receivers Work

Chapters:
0:00 - Intro
0:31 - One of these breaks a design rule
1:08 - The plan
1:23 - What a 2.4 GHz wave actually is
2:06 - AM and FM modulation
2:34 - Digital modulation: ASK and FSK
3:23 - QAM explained
3:48 - What if we just want range?
4:42 - The noise floor
5:51 - Decoding below the noise floor
6:14 - A quick announcement
6:35 - How LoRa works: chirps
7:20 - The dechirp trick
8:03 - Processing gain
8:31 - The four receivers
9:29 - The rule: never route RF through a via
9:52 - 187 Mbps next to a 5G tower
10:34 - Why everything in RF is 50 ohms
11:55 - Reflections
12:17 - Current flows in circles
13:25 - PCB design walkthrough in KiCad
14:23 - It’s your layout