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.