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2 Fix spelling of "Pololu", add links
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You haven't define what's the limit of your budget.

However, for cheap programmable robots you can use: the DFRobot 2WD Mobile PlatformDFRobot 2WD Mobile Platform and interface it with an Arduino Uno. You can also use a Polulu 3pi robotPololu 3pi Robot or even a PICAXE MicrobotPICAXE Microbot which is already equiped with a front bumper

Look a this for more kits: 47 Programmable Robotic Kits

You haven't define what's the limit of your budget.

However, for cheap programmable robots you can use: the DFRobot 2WD Mobile Platform and interface it with an Arduino Uno. You can also use a Polulu 3pi robot or even a PICAXE Microbot which is already equiped with a front bumper

Look a this for more kits: 47 Programmable Robotic Kits

You haven't define what's the limit of your budget.

However, for cheap programmable robots you can use: the DFRobot 2WD Mobile Platform and interface it with an Arduino Uno. You can also use a Pololu 3pi Robot or even a PICAXE Microbot which is already equiped with a front bumper

Look a this for more kits: 47 Programmable Robotic Kits

1
source | link

You haven't define what's the limit of your budget.

However, for cheap programmable robots you can use: the DFRobot 2WD Mobile Platform and interface it with an Arduino Uno. You can also use a Polulu 3pi robot or even a PICAXE Microbot which is already equiped with a front bumper

Look a this for more kits: 47 Programmable Robotic Kits