Besides on directly connected 7 segment with direct I/O port from microcontroller, we can also use the CD4511 (7 segment encoder) to help on decreasing the microcontroller I/O port and only required to send the binary data.
Nowadays, 7 segment has become the most popular display unit on market because it is cheap, easy to program and small. On market, we can found that there was 2 types of 7 segment which is common anode and common cathode. In this project, we are going to use 7 segment with common cathode and directly interface to microcontroller.
MD10C is an enhanced version of the MD10B which is designed to drive high current brushed DC motor up to 10A continuously. It offers several enhancements over the MD10B such as support for both locked-antiphase and sign-magnitude PWM signal as well as using full solid state components which result in faster response time and eliminate the wear and tear of the mechanical relay.
A photoresistor or light dependent resistor (LDR) is a resistance decreases with increasing incident light intensity. It can also be referred to as a photoconductor. In here, we going to do a simple connection of LDR and display the ADC and Voltage value on LCD.
Piezo buzzer, generally use as a sensor and actuator which are use to measure force, pressure , tools for positioning object and etc. As for this project, we are going to use it to generate a melody by applying PWM frequency to it.
Analog distance sensor which have a function that same as the Ultrasonic sensor which is use to measure range. But for this sensor, the output value are in centimeter(cm) and also the output are only given an analog value. To get the result, an mathematics formula are required to apply into our C-code for calculation.
There are many sensor to measure a range such as using Ultrasonic, Infrared and more. In here, we are going to experience how to measure a range using Maxbotic Maxsonar-EZ1 ultrasonic range finder which it will give the output value in inch.
Nowadays, there are many type of temperature sensor is come with different output form and also the temperature range such as thermocouple, thermistor, infrared, RTD. In here, we pick LM35 as our temperature sensor due to it have a linear output and also suitable for normal use like weather temperature measuring.