I don't particularly like the openflexure approach. Instead, I build stages similar to standard XY stages: https://www.asiimaging.com/products/stages/xy-inverted-stage... which uses standard motion components (linear rail and linear bearings, 3d printer style steppers), all of which gets mounted on aluminum extrusion (4040). Then the illuminator and camera just get mounted on the aluminum extrusion.

It's pretty close to the Thorlabs Cerna, https://www.thorlabs.com/cerna-r-series-modular-microscopy-s... although I just do low-magnification light microscopy.

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LolWolf a day ago | parent [-]

I see, what’s the min step size you’re going for?

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dekhn a day ago | parent [-]

typically around one micron (which is about the same as one pixel with my objective and camera). I am not trying to take min steps. I'd rather have smooth motion, with fairly high accuracy.

The current system I am building is mainly optimized around scanning large areas quickly; I have already demonstrated that I can create accurate stitches by moving, stopping, taking photo, repeat, but it's slow (due to the stopping) so I am working on an approach that keeps the stage moving constantly, but triggers a bright flash that freezes intermediate exposures. This gives a good 10X speedup over the simpler model of move/stop/photo/repeat but brings in a number of other challenges.

	▲	LolWolf a day ago \| parent [-]
		ah very cool, I see! good luck! are you posting updates anywhere?