So there are many electronic 'air' drumsticks in the market, such as Aeroband, Freedrum, Senstroke, Aerodrums, etc. I wanted to know what sensors do these use or might have used to do what they do.
For example, the Aeroband Pocketdrum have a pair of drumsticks with sensors, and a pair of foot bands with sensors; all transmit the signals to a receiver, which transmits them to a smartphone or headset. When a stick is played in space(air), it doesn't hit anything, but due to its position, rotation, acceleration, etc., a 'hit' is recorded, and a sound is played through the speaker. Hits in different places produce different sounds, as if a drumset was there in front of you. Before playing, the sticks are calibrated to the snare drum, the one on the floor-left, to recognize the relative positions of the other drums. The tech for Freedrum is similar, Senstroke requires a surface to hit, but produces sound in a similar way, and Aerodrums use a camera in frount of the drummer to capture the white reflective tips, so their tech is completely different.
Links:
Aeroband: https://www.aeroband.net/products/pocketdrum2-plus
Freedrum: https://freedrum.rocks/products/freedrum-electronic-drumsticks
Senstroke: https://www.redison.com/products/senstroke-box
Aerodrums: https://aerodrums.com/
Any help would be most appreciated. Thank you.

 

Welcome to AAC!

I wanted to know what sensors do these use or might have used to do what they do

I'd use an accelerometer.

https://www.omega.com/en-us/resources/accelerometers

 

So there are many electronic 'air' drumsticks in the market, such as Aeroband, Freedrum, Senstroke, Aerodrums, etc. I wanted to know what sensors do these use or might have used to do what they do.
For example, the Aeroband Pocketdrum have a pair of drumsticks with sensors, and a pair of foot bands with sensors; all transmit the signals to a receiver, which transmits them to a smartphone or headset. When a stick is played in space(air), it doesn't hit anything, but due to its position, rotation, acceleration, etc., a 'hit' is recorded, and a sound is played through the speaker. Hits in different places produce different sounds, as if a drumset was there in front of you. Before playing, the sticks are calibrated to the snare drum, the one on the floor-left, to recognize the relative positions of the other drums. The tech for Freedrum is similar, Senstroke requires a surface to hit, but produces sound in a similar way, and Aerodrums use a camera in frount of the drummer to capture the white reflective tips, so their tech is completely different.
Links:
Aeroband: https://www.aeroband.net/products/pocketdrum2-plus
Freedrum: https://freedrum.rocks/products/freedrum-electronic-drumsticks
Senstroke: https://www.redison.com/products/senstroke-box
Aerodrums: https://aerodrums.com/
Any help would be most appreciated. Thank you.View attachment 313270

Welcome to AAC.

This article here on AAC could be very helpful. It appears the Freedrum uses an MCU with built-in 3 axis accelerometers.