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Category Archive for: ‘Reviews’

3.2″ TFT LCD Touch Screen on Arduino Due

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I got myself a 3rd party Arduino Due to complement the 3.2″ TFT LCD because the Arduino Mega is simply too slow. At RM 75, it is half the price of the original Arduino Due. It works just the same and has the identical Atmel SAM3X8E ARM Cortex-M3 CPU. The best thing about it is it’s red in colour,  which makes it …

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3.2″ TFT LCD Display (ILI9481)

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In this article, I’ll be testing out the 3.2″ TFT LCD Display with the ILI9481 controller. I’ve also decided to make my own interfacing circuit instead of buying a shield. At the back of the LCD are the pinouts and the SD card slot which can be used to load images. I will be using an Arduino Mega 2560 as the …

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Rotary Encoder 500ppr Resolution

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In this post, I’ll be reviewing the B-106-23983 Rotary Encoder. It is made by ESB and has a resolution of 500 pulse per round. This is a high-end rotary encoder and is used in critical automated applications. It is mostly found in industry machines rather than consumer electronics. It costs RM 350 as stated in the cytron website. Below are …

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HC-SR04 Ultrasonic Sensor on PIC

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HC-SR04 is a very common ultrasonic sensor and it is normally found in Arduino kits or projects. The library for this sensor is widely available for the Arduino platform but not for PIC. I’ve been asked to help to write a simple PIC code to interface with the ultrasonic sensor. It’s actually very simple by referring to the timing diagram. …

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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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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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