00:01now let's start from the top you can see the main microcontroller itself which is the STM32F030F4P6
00:11which handles all the firmware like flight controller software and everything it's a very
00:17cheap and popular microcontroller from STMicroelectronics now moving down we have the
00:22two important ICs again I have soldered out one of them but you can see them here so one IC
00:27is the
00:27BMP180 barometric pressure sensor from Bosch so this sensor measures the altitude of the drone and
00:34helps us to fly it in altitude hold mode the other important IC here is the L3GD20H three axis
00:42gyroscope sensor we have removed the sensor to see the traces and figure out the exact part number
00:47so this sensor is from STMicroelectronics and this is the most important sensor which measures the
00:52pitch roll and yaw of the drone and helps us to fly it stably now we have one push button
00:57here which goes on to connect with this main power button so if you press this power button this
01:03button gets pressed and then moving down further you can see we have a p-channel MOSFET which is
01:10SI2301 now this p-channel MOSFET is probably there for reverse polarity protection and we have one more
01:16voltage regulator which is XC6206P282MR which is a 2.8 volt voltage regulator you can see these terminals
01:26here which were actually connected to the four motors and then led positive and negative for the led
01:33lights which were placed in front of the drone
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