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All Posts Tagged Tag: ‘arduino’

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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PID Line Following Robot

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Previously, I’ve made a Bluetooth Controlled Robot (read post). By adding a line sensor to the robot, I’ve managed to create a simple line following robot and utilize the ever popular PID algorithm to navigate the robot. You can read more about my DIY line following sensor here and how I made it. Now it’s time to mount this line following …

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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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Interfacing with Rotary Encoder

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Rotary encoder or rotary switch are mechanical sensors that can track the direction and distance of a rotation movement. It is commonly used as digital volume knobs (where the rotation is endless, unlike a potentiometer). More advance types of rotary encoders are used on robots to track the distance of its’ movement. I got this rotary switch breakout board from …

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PCD8544 Nokia 3310 Graphical LCD

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Remember the good old Nokia 3310? For display, it’s using a Philips PCD8544 Graphical LCD. It features a whopping 84 x 48 pixels of resolution to ensure true clarity when playing Space Impact or Snake II 😀 Apparently now you can buy a module with this graphical LCD on it for around RM 10 shipped from China. Well, if you …

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