Well this is my first partial success building robots, my symet did not work :P and I am still trying to figure out what is wrong with it:P I got the book from Mark tilden and I tried to build it as per specifications, but i did not have at hand the same parts. I used 2 Hobbyking servos for motors and two mini relay for "brains" I was really happy when it first started running forward and it seems to have some good strength to push (see video) but My problem is that the edge detection sensor do not work, I made the realy twice and tried to check and twitch every connection. Afterwards I checked a single relay and it seems that the voltage is too low to activate the reverse mode :P Anyway I ordered new parts from SOlarbotics I will post ASAP regards EZ
I pudated yesterday my edgebot’s brain and now it is working perfectly I added two edge detection sensors and it has new 5v relays and now I am using a 9v batery
THis is the basic edgebot from Junkbots, bugbots book(Tilden et al), all the schematics are in there. Unfortunatelly I have the kindle version and is rather difficult to “copy & paste” from it
depending on the motor you have I owuld advice you to put the relays on the bottom part, close to the sensors and batery on top of the motor to have more traction