Glossary
This glossary includes common terms and concepts related to Onewheel and VESC technology.
A
- ADC: A type of electronic circuit component that converts analog signals to digital signals. You will find 2 of these used for your foot sensors, measuring the voltage. A low voltage (usually below 0.5 Volts) means it’s not engaged aka off, whereas a higher voltage (usually above 2.0 Volts but mostly close to the maximum, aka 3.3 Volts)
B
- Balance App #obsolete: In v5.3 and older we used to select the balance app. Since 6.0 we have packages so we no longer select an “app” in App Settings
- Balance Package obsolete : An package of software settings and controls that controls the balance and stability of a Onewheel.
- BMS: a device required to safely operate/charge your Lithium battery
C
- Cutoffs: VESC motor controllers have lots of cutoff options used for safety in esk8/ebike applications, e.g. when temperature gets too high or voltage gets too low - For Onewheels cutoffs mean nosedives, so we always want to avoid cutoffs and configure tiltbacks instead to alert the user that something isn’t right
- CannonCore: Onewheel motor made by Floatwheel, also has the same dimensions as a Hypercore but it has a hollow axle. Much more powerful than the Hypercore (probably similar to SuperFlux) and with a similar kv as the Hypercore
D
- Duty Cycle: See the howto WTF is Duty Cycle?
E
- ERPM: it stands for effective RPM (rotations per minute) which is based on magnets rather than wheel rotations. For our use 1000 erpm translates to roughly 2 mph or ~3km/h
F
- Float Control: iOS App to enable easy custom shaping for VESC boards.
- Float Package: VESC Package for “one-wheeled skateboards” made by @NicoAleman . See Float Package for more information
- Footpad: The platform on a Onewheel where the rider places their feet.
- Field Weakening: a technique used to allow brushless motors to run faster - see How To: Field Weakening
G
- Growler: A OW/VESC hardware with shorter rails and Pint-sized tire
H
- Hypercore: The stock OW+/XR brushless DC motor with 750W of power.
I
- IMU: An Inertial Measurement Unit, a device that measures a vehicle’s motion, orientation, and acceleration.
J
K
- Kv: Motor Kv “provides a way to describe the relationship between the peak voltage and rotation speed in a brushless motor in a no-load condition”
** Hypercore: 14kv
** Superflux: 17kv
** Cannoncore: 13-15kv (still tbd, just based on Tony’s statements so far)
L
M
- metr: A popular bluetooth module + app for ride tracking - see metr.at
N
- Nose Hunting: A phenomenon where the nose of a Onewheel goes up or down unexpectedly. See the video below
tbc
O
- Onewheel: a one-wheeled vehicle invented by Ben Smither in 2007: Balancing One Wheel Scooter | Hackaday
P
- Prowler: A continuation of the Growler setup when you use a Pint Rim instead of the stock XR one
- Pushback: see Tiltback below
Q
R
S
- Superflux: Motor made by Fungineers, it has the same dimensions as the Hypercore but is more powerful and has a higher kv than the Hypercore.
T
- Tune Card: A preset of Float Package customizations to achieve a certain ride behaviour of a VESC board.
- Tiltback: Movement of the nose to prevent the user not to push the board any further. Fully user-configurable. In the “VESC App > Float Package” the Tiltback can triggered by Duty Cycle, Voltage High/Low Ends. Note: even negative tiltback is possible, aka nose going down - ALWAYS test your tiltback setting at low-speed first (e.g. set 30% duty cycle as the trigger) to recognize how it feels
U
V
- VESC: The Vedder Electronic Speed Controller, a type of open-source ESC commonly used in Onewheel customization.