Measure something: add a sensor to a microcontroller board that you have designed and read it.
Group Assignment
Probe an input device(s)'s analog and digital signals view page
Learning Outcomes
Demonstrate workflows used in sensing something with input device(s) and MCU board
Individual Assignment
Input device is a piece of hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, digital cameras and joysticks. In this week we need to design a PCB with a Sensor and Vishualize the data to a computer.So for my final project PCB I need a sensor to monitor human presence , so I choosed an Ultrasonic sensor.
In my project the ultrasonic sensor is used to monitor the presence of human within a area. If there is a human within the confined area, then the reflected wave will reach the receiver side of the sensor.
ULTRASONIC SENSOR (HCSR04)
The HC-SR04 ultrasonic sensor module uses sonar sound to determine distance to an object like bats do. It offers excellent non-contact range detection with high accuracy and stable readings in an easy-to-use package. From 2cm to 400 cm or 1” to 13 feet. Its operation is not affected by sunlight or black material (although acoustically soft materials like cloth can be difficult to detect). It comes complete with ultrasonic transmitter and receiver module.
For designing the PCB circuit I used AUTODESK EAGLE. I used ATtiny44 as the microcontroller, I also included a 2x2 Pin Head for I2C communication for future so that I can use this same board for Embedded Networking and communication week.