Most simple way to control 4 DC motors

Other Hardware Motors, Mechanics, Power and CNC
1

What is the best and most important cheapest way to control 4 DC motors with at less pins as possible?
im working on a robot but im not sure how to control them.
i know i should be using a H-Bridge, but im not sure what type i need and how they work with the code.
ive found this one: http://www.dx.com/p/l9110-dual-channel-h-bridge-motor-driver-module-for-arduino-black-157149#.UzbXCPl5OSo

But im not sure if this is right for what i want.
and if this is the way, how do i code it?

Thanks in advance!

2

What is the current rating of your DC motor? If it is less than 1.2A per motor then you might wanna consider using this Adafruit Motor/Stepper/Servo Shield for Arduino v2 Kit [v2.3] : ID 1438 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits

It is the easiest and simplest way that I can think of. Everything is already pre soldered and the library code is ready to be downloaded from Adafruit official website. They have a very good documentation on that shield too.

3

i don't want to look cheap but i'm just a 14 YO with not much money XD
i can't really afford that, plus its a bit too much i think, since i only need to control 4 DC motors.

4

jkctech:
i don't want to look cheap but i'm just a 14 YO with not much money XD
i can't really afford that, plus its a bit too much i think, since i only need to control 4 DC motors.

You don't specify what type control you want, then the below for ~$4 should work for on/off motor control.

http://www.ebay.com/itm/4-Channel-Relay-Module-DC-5V-With-Optocoupler-For-Arduino-PIC-ARM-AVR-DSP-HD23L-/201060650049?pt=LH_DefaultDomain_0&hash=item2ed0260c41