During the pandemic, there are various online competitions, one being V-Factor held by the Directorate General of Vocational. Although this competition was held online, the objective is to develop a full-scale functional product. With limited time and resources, Khrisna and I made a Health and Social Distancing band.
Health and Social Distancing band is a band that can alert its user when they are too close to each other while measuring the level of oxygen in its user. This problem comes from the Covid-19 protocol, where people should stand 1 meter from each other.
If the two users are not near, then the display on the band will indicate that it is safe and there is no alert.
When the two users are close to a distance of approximately 1 metre, the band will display a text to maintain distance and warn the user.
In addition, the device can also measure oxygen levels in the body by utilizing sensors.
To short things out, this is the directories of this project.
Because of the limited time and resources we have, we're not using any pcb board and simply just manually soldered it using jumpers of 24 AWG. Here are the componen used in this project
- Wemos D1 Mini chosen because of its small and compact factor, using its wifi capabilities to detect nearby user.
- Pulse/heartrate sensor used are: Max30102 that cost around $7-10
- Oled display is just a normal SSD106 I2C device.
The idea is just to detect if there is anyone close to 1 meter based on the RSSI level on the Wemos D1 Mini and alert using on the OLED and turn on the buzzer. For additional feature, we're using the Pulse rate sensor. The algorithm was made based on this flowchart
The RSSI level code is based on the @amansinghaljpr project on Github called So.Di Band, here is the link
https://github.com/amansinghaljpr/SO.DI-Band
The case itself printed using Ender 2 and ESun filament PLA is used during the manufacturing process. The case are divided into 2 different part just to make it easier to assembly. This case is designed for 20mm strap which you can easily found it commercially.
