if i got this right using a picaxe 28x1 project board (http://www.rev-ed.co.uk/docs/AXE020.pdf) and a l293d motor controller i can control only 2 motors. For my robot i will need to control 6 motors. What can i do? is there a way to connect more than one l293d to my project board? (all motors must be able to move both directions)
Another question. Am planning to use 3 ultrasound one directly above the other at about 3 cm distance from each other my question is there a possibilitty that their signals interfere with each other thus messing out the results?