Can you convert a 3 axis AKZ250 to 4 axis?

[Azalin]

I have a 3 axis AKZ250 USB board (aka Leafboy card). On the right side of the board (see the yellow circle on the attached image) there is two optos missing. Looks like soldering there the right components will make it 4 axis however that's just my guessing. Has anyone tried this? Did/will it work?

Thanks in advance.

Best,
Suat

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[CitizenOfDreams]

It should work if the firmware is the same for 3-axis and 4-axis cards. But I suspect the 4th axis is disabled in the firmware.

[Azalin]

I guess you are right.

[sprockett]

Ive just soldered 2 new chips.. damn no action. how to get the firmware?

[lennardvn]

did`t you ever get it to work ?? same issue here

[Azalin]

If you are asking me, sorry I've never tried.

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