This is a simple way to build a moving X-Y stage using Flexure technique , i used a Pololu Micro gear motor ( https://www.pololu.com/product/638 )and a H-bridge drive (Pololu md08a).
I used an M3 bolt with nut and couple it to the motor using a standard stand off (motor shaft is the same as the bolt 3mm). i also used an analog output Hall Effect sensor with a magnet to measure the displacement , i got a reasonable span ( 1000mV for 3.5mm travel) .
I didn't implement the motor mechanism for the Y axis yet , but i wanted to share with you an alternative way for moving in XY plane in minimalistic way . I planned to use this platform for Laser/Mirror alignment .