Change I2C address of joystick module

[tttttttom]

hi,
does anyone know if it is possible to change the i2c address of a joystick module? I would like to use two joysticks on the port A.
I am very geartful for any hint..
thanks and regards
tom

[felmue]

Hello @tttttttom

if I am not mistaken there is no joystick module - did you mean the joystick unit?

The joystick unit uses an MEGA328P processor inside which most likely has the I2C address programmed in it and I cannot find the source of the firmware running inside the MEGA328. Given that I would say you cannot change the I2C address.

Your best bet would be a PaHub unit which has been developed exactly to solve that use case.

Thanks
Felix

[tttttttom]

Hello Felix,
thank you for sharing your knowledge. And yes, my question concerns the joystick UNIT. And yes, I would like to change the i2c address inside the MEGA328P. But the unit you are mentioning is also fine. I will check that ...
Regards
Tom

[ajb2k3]

@felmue is correct here that the PaHub is what needed however,
There is a header inside that if you solder the pins, the address will change.

[felmue]

Hello guys

@ajb2k3 : that is interesting - thanks for sharing.

@tttttttom : sorry for misleading you.

Also interestingly these address pins are not mentioned in the schematic.

Thanks
Felix

[ajb2k3]

@felmue they are, its just that it takes a bit of comparison work to spot them.
they appear as R17, R18 and R19.