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All Posts Tagged Tag: ‘robot’

Bluetooth Mini Robot

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Got another new robot kit and decided to create a bluetooth controlled robot with it. It’s from DFRobot and it’s called the MiniQ. Here it is assembled. Created a simple circuit on a donut board with a L293 H-Bridge and Arduino Nano. It is powered by a 2 cell Lithium Polymer battery. Typically each cell provides 3.7V so that amounts …

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L298N Dual-Channel 2A Motor Driver

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I’m working on a new project which has two 12V DC Geared motors. Below are their specifications. Its’ rated current is 410mA but if it is stalled, it requires a whopping 1.8A. Stall current is the highest current that the motor will consume when the load is too much (causing the motor shaft to stop turning). When choosing a suitable …

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Arduino + Visual Basic : PWM Control

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Pulse Width Modulation or PWM allows the microcontroller to mimic analog control by turning the voltage on and off very quickly. The Arduino has an 8 bit PWM built-in, which means it has up to 256 levels of control. ( 2^8 = 256 ). These 256 levels of control actually determines the percentage of the ON duty cycle over the …

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Bluetooth Controlled Robot

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Recently I’ve bought a robot base kit from eBay for around RM 50. Similar ones sold here will cost around RM 100. The kit comes with the robot base, two motors with gearbox, two wheels and some mounting accessories. The tamiya motor with gearbox. It’s rated at 230rpm @ 6V. The wheel with matching key slot as the gearbox shaft. …

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Line Following Sensor (DIY)

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This is my attempt to create a simple line following sensor on my own. These sensors can be easily bought but it can be quite expensive considering that the components on it are quite simple. It’s been some time since I’ve played with passive components and analogue design. I will be using the humble op-amp (operational amplifier) to compare the …

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