MEPSKING-FPV-Technical-Terms

FPV Technical Terms

What are the technical terms for FPV drones?

FPV, or First Person View, is a hobby riddled with acronyms that can sometimes be confusing, even for those familiar with the field.This list aims to serve as a helpful guide for both newcomers and seasoned enthusiasts.

Acronyms	Equipment	For Description
2.4GHz, 5.8GHz, 900MHz	Receiver	MHz = Mega Hertz; GHz = Giga Hertz Frequencies used in RC and FPV.
1S, 2S, 3S, 4S, 5S, 6S...	Battery	These numbers indicate how many cells in a LiPo battery. The higher the cell count, the higher the nominal voltage.
2", 3", 4", 5", 6", 7"...	Drone Rack	These are propeller sizes, also often used to described the size of an FPV drone.
4in1	ESC	When talking about 4in1 ESCs, it means it incorporates 4 ESCs on a single board. These are typically mounted under a flight controller as a stack.
AC	/	The type of electricity that comes from your wall socket. AC has Live and Neutral wires.
ACC	FC	A sensor that measures acceleration forces in a specific direction.
Acro	FC	Acro is also sometimes used interchangeably with rate mode and manual mode.
Air Mode	FC	controller active even when throttle is at zero when the drone is armed.
Angle Mode	FC	A stabilized flight mode using both gyroscope and accelerometer sensors.
AUX	FC	AUX Channels are additional channels to the 4 channels that are used for the control sticks. These can be used for changing flight modes & controlling peripherals.
AWG	Battery	An electrical wire size measurement, the larger the number, the smaller the wire.
BEC	ESC、FC	ESC, FC and VTX. They are designed to provide constant voltage, e.g. 5V, for other RC equipment such as FPV camera and radio receiver.
BF	FC	Betaflight is a popular flight controller firmware for FPV drones.
BNF	/	A BNF model is a pre-built model similar, but minus the radio transmitter. You need your own radio to bind to it.
Bootloader	FC	Special code stored in non-volatile memory in a microprocessor that can interface with a PC to download a user's program.
Buzzer	/	A very loud speaker commonly used in drones, for the purpose of low voltage and lost model alarms.
Cap	FC	Capacitors, or caps, are cylinder components with two legs that are soldered onto ESC's power pads for reducing electrical noise.
Cinewhoop	Drone Rack	people, animal and properies. Cinewhoops tend to be slower than freestyle drones which makes them great for smooth and up-close shots.
CLI	FC	This is an interface in Betaflight where you can enter command lines.
Curr / CRT	ESC、FC	A solder pad on ESC / FC for current sensor data.
CW / CCW	Propeller	direction. Each quadcopter uses two clockwise and two counter-clockwise propellers. They must be installed correctly for the drone to take off.
DC	Battery	DC is the type of electricity that comes from power source with Positive and Negative (+ and -), such as a battery.
DFU	FC	If you have trouble flashing flight controller firmware directly, you can enter DFU mode first by holding down the boot button on the flight controller board while powering on.
DShot	FC	A type of digital ESC protocol.