Are there any other motor controller modules for driving micro motors with smaller than 17.7x10.2mm PCB size?
Why not design your own PCBs ?
I just ordered HTTSOP-16 DRV8833 modules on aliexpress, ordered enough for delivery date 12/30/21and not 3/4/22:
https://de.aliexpress.com/item/1005003196692661.html
Modules are only millimeters in both directions given that height is 1.2mm maximally. Even with soldering capacitors and resistors around, size should be less than 10x10mm:
Even if pitch will be 0.5mm, I remembered that I once did solder a cable to 0.5mm pitch connector pin successfully. I did that using a Raspberry camera showing a very big magnification image of the connectors on HDMI display. It was a bit strange to solder left of keyboard while having to look straight on the display to see the details. Very hot soldering iron was only 5mm distant to my fingers ...
https://www.esp32.com/viewtopic.php?f=19&t=11126#p45445
