Whats the fastest micro-controller that pretty much cab be programmed similar to an arduino out there that can operate sensors e.t.c?

hello i have A0 to A5 pins free on my arduino uno. can i use them to control 2 HCSR04 sensors or do i need to upgrade to Arduino MEGA? Thanks.

Which one of the two is better? i use hcsr04's and they work great. The parallax pings cost $29 and the hcsr04's cost $2.50 on ebay. What is the main reason for the huge price gap? is it because of manufacture quality or are the parallax pings better?

2ma is great.  i will let you know how i go.

two work fine on my current robot.  I am to up the ante by using my arduino on a larger system which may require as much as 8 on my offroading one. I will also have 2 temperature sensors to monitor my mootor driver temp and switch the fan on when needed.

I am thinking of putting a 5v regulator with a common ground to power up my sensors. any thoughts? i have a 5v 1amp regulator gathering dust.

i have the zenethink ZT180 v2

i am thinking of doing this:
http://www.ubergizmo.com/2011/08/diy-android-powered-tank/

or this:

http://www.dfrobot.com/community/2012/01/iphone-controlled-robot-powered-by-dfrobot-a4wd/  but using android

i would say first start off with a simple electronics setup with e.g led timers, buzzers, line follower robots that don't need programing (buy them as kits so that you have experience with circuit board components.

after you are familiar with that start off with basic arduino stuff with sensors e.g ultrasonic sensors, leds resistors ad prototype boards.

some electronics kits
http://www.ebay.co.uk/itm/Electronic-Dice-Electronics-Project-Kit-/290697365810?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item43aee9c932

http://www.ebay.co.uk/itm/Electronics-Kit-Pocket-Transistor-Radio-/221034487745?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item3376ae9fc1

http://www.ebay.co.uk/itm/Electronics-Kit-voice-changer-kit-/370550035946?pt=LH_DefaultDomain_3&hash=item564680d5ea

http://www.ebay.co.uk/itm/PICAXE-Simon-Says-Project-Electronics-Kit-/120998522275?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item1c2c12eda3

some arduino kits

http://www.ebay.co.uk/itm/Starter-Kit-Breadboard-Jumper-Wires-LEDs-Resistors-etc-without-Arduino-/120947620583?pt=UK_Sound_Vision_Other&hash=item1c290a3ae7

http://www.ebay.co.uk/itm/Arduino-UNO-R3-Starter-Kit-Proto-Board-jumpers-LEDS-USB-Lead-More-/281058082814?pt=UK_Computing_Other_Computing_Networking&hash=item41705dfffe

http://www.ebay.co.uk/itm/Standard-Starter-Kit-4WD-Robot-Car-DFRobot-Pirate-Robotics-Platform-with-Arduino-/160950348690?pt=UK_Computing_Other_Computing_Networking&hash=item2579636b92

good luck

They are geared 25mm motors. each with a stall torque of 1.85A (tested and proven) with the second one do i just for example connect 1a and 1b to lets say pin 9 on my arduino uno? how would i interface the second one with arduino uno and would it be easier to use than the first one?

Hello everyone. i am planning on building a 4wd object avoidance bot and because of the chinese new years coming up, there will be some bad delays. (im in Australia) I have located an online shop from india (i have bought from them before) and as i was reading the manual it gave hints that i can control it via servo library on two of the pins it says "pwm1" and "pwm2"
Here is the motor driver:
http://robokitsworld.com/index.php?main_page=product_info&cPath=73&products_id=176

Here is the manual.
http://www.robokits.co.in/documentation/2A_Dual_Motor_driver.pdf

as for price range im willing to pay $6 for each as this is a budget build.

Here is the second one i just found.
http://robokitsworld.com/index.php?main_page=product_info&cPath=73&products_id=15
can i control this one with servo library too?

Any thoughts? Thanks guys

more details on the dc motor. You have a wide array of motor drivers to control your dc motor:

esc's using the servo library
http://www.ebay.com.au/itm/320A-Brushed-Brush-Speed-Controller-ESC-For-RC-Car-Truck-Buggy-Boat-1-8-1-10-1-8-/360501023580?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item53ef89135c&_uhb=1

Motor drivers.
http://www.ebay.com.au/itm/NEW-L298-Based-Stepper-Motor-Driver-Board-Arduino-L298N-Controller-Module-/251103703466?pt=AU_B_I_Electrical_Test_Equipment&hash=item3a76f271aa&_uhb=1

your choice.

Yes esc's work with arduino and servo library. You can power your esc with a lipo and power the arduino through the bec.

are you using rechargeable batteries? If you are not that its a 90% chance thats why. i have run motors on rechargeable batteries and non rechargeable batteries and found out that they had more torque on rechargeable batteries.

they are 25mm geared motors they pull 50ma no load @12v. max efficiency current is 350ma and stall current is 1.7A. its going to be 4wd

okay thanks just what i wanted to know. Im new to this so i will update you on how i will go.

hello i asked a question before about using rc car esc's instead of motor drivers.  all was working well until i discovered that the brake function in the esc was interfering when i was using the servo library to control the esc when i have the object avoidance code running. so i thought that would it be possible to wire two arduino motor controllers in parallel to increase current output?

here are the motor drivers:

http://www.ebay.com.au/itm/L298N-DC-Stepper-Motor-Dual-H-Bridge-Drive-Controller-Board-Module-for-Arduino-/190779229320?pt=AU_B_I_Electrical_Test_Equipment&hash=item2c6b540488&_uhb=1#ht_5248wt_1037