EPIC Star Wars VR 9-Axis BLE sword \ E-bike HMI (Human Manchine Interface) nRF5340 (Triple Core) \ RGBW Flashlight [Multiplayer] || 4 CAP Buttons 240x240 COMBAT Training screen Dev

[quentin]

Hi @Juan-Antonio_Soren_E ,

I’m not sure I understand everything in your project, but it sounds cool nonetheless Let me know if you need help on the software side (device and phone).

@Juan-Antonio_Soren_E

Do you think 6-axis motion will suffice, for e-bike and VR controller ? Is the compass really needed, especially if the e-bike application can pair with smartphone via BLE.

It depends on what you want to achieve:

• 6-axis IMU allows for linear acceleration measurement, angular velocity measurement and (to a certain extent) angle computation.
• 9-axis IMU allows for more accurate angle computation, and also allows for a compass feature.
• BLE+smartphone gets you a GPS, allowing for position and speed measurement, knowing that smartphone GPS provide data at at most 1Hz (if you want more, you’ll need to embed a GPS in your device).

@Juan-Antonio_Soren_E

When we pedal the bike, the bike frame will shift slightly from side to side. This movement can be directly translated to cadance. Furthermore, how much the bike swings from side to side, can tell us something about how much force the rider is putting into the pedals. Not as a linier function, but pulling the handlebar, when pedaling hard to gain acceleration, the motor controller can put in some more watt´s, and thereby making the rider feel bionic.

Here lies a general and tough challenge: how to turn IMU data into actual added value for sportsmen. I know for a fact that many people are working on this at this very moment.