Alright, I don't wana make a lawn mower, but i did like how he designed the H bridge of his lawn mower (unsuspecting killing machine).
Any draw backs to what he made?
Or is there something better out there that is able to control the motors he used?
After a lot of slow loading the referenced web pages, I finally located the below schematic. At the bottom of the page describing the h-hridge construction are comments that the schematic is bad. It is hard for me to make much out of it given the jumble of numerous connections. I think there are simpler workable designs available (also a lot of bad designs on the net too). Check the design of the h-bridge in the "open servo" schematic on the net.
ftp://ftp.rediculouslygoodlooking.com/arduino/OSMC/osmc_3.22.pdf