Texas Instrument's SN754410  is know to be a half-bridge driver suitable for low power applications it's rated current is 1A per channel. Costing only $1.55 it's a great choice for small robots on a budget.

Now what do you do if you need more power ? Multiply!  Bruteforce !  Without much talk below is the schematic:

motor_driver_schematic.png

Read More »