A contactless thermometer, as its name suggests, is a device used to measure the body's temperature by bringing the body closer to the thermometer, up to a distance of three meters.
Making this thermometer is done for two reasons: first, to obtain an A in Kuliah Kerja Nyata (KKN), and second, to utilize it at the village hall as a first-stage screening device for COVID-19.
Technologies Used 🧑💻
The Arduino microcontroller was used to create this thermometer, which is popular among IoT (internet of things) activists.
The specifics of the technology applied in this thermometer are as follows:
- Ultrasonic hc-sr04
- LCD Display 1602 16x2
gy-906 temperature sensor
The primary goal in creating this device was to measure body temperature. Therefore, a temperature sensor that can be detected in real time is essential. Sadly, this sensor still detects objects even when nobody is in front of it.
Ultrasonic hc-sr04 sensor
An ultrasonic sensor, hc-sr04, is needed to solve the problem of a temperature sensor that still detects objects even when nobody is in front of it. This sensor works by detecting movement at a maximum distance of 3 meters.
This sensor is required to reduce needless detection, so the gy-906 temperature sensor will only turn on when it detects an object at a distance of no more than three meters.
When motion is detected, a buzzer plays a sound to let the user know that the device has caught up the movement.
Display temperature data
Users may determine whether their body temperature is normal or not by looking at the data shown on the 1602 16x2 LCD.
The Arduino IDE is used to write code in the C programming language. This software can make writing easier because the code can be directly uploaded to the Arduino board.
Put Arduino on the case
It would be nice if a case was put to hide the many cables so that the device looked clean.
The following are the results of the device that has been made and installed at the village hall in the Sidoarjo area.
What I Learn 💪
In the process of making this device, I learned a lot about cable wiring and how to use it. I'm also learning how to code on arduino.