Smart Watch: Proof of Concept

As a part of a freelance project, I was asked to create a Proof of Concept (POC) for a COVID-19 Smart Watch. The watch can measure temperature, pulse rate, blood oxygen level (SpO2) and has Bluetooth connectivity.

Client Requirement:

Interface temperature sensor,pulse rate and SpO2 sensor with a Microcontroller and display their values on the IPS display with interactive screens.

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Temperature Sensor Interfacing:

TMP117 - Temperature Sensor

• The TMP117 precision temperature sensor by Texas Instruments was used to measure temperature.

• The sensor is interfaced with an Arduino UNO and the I2C communication protocol is established between the sensor and the MCU.

• The display module is also interfaced with the Arduino UNO via SPI.

• An interactive animation, of mercury rising in a thermometer, plays as the MCU processes the data received from the sensor before displaying it on the LCD.

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Pulse Rate + SpO2 Sensor Interfacing:

OCareM1 - Pulse Oximeter Sensor

• The OCareM1 module pulse oximeter sensor by Taiwan Biophotonic Co. (tBPC) was used to measure pulse rate and blood oxygen level (i.e. SpO2).

• The sensor is interfaced with an Arduino UNO and the I2C communication protocol is established between the sensor and the MCU.

• The display module is also interfaced with the Arduino UNO via SPI.

• An interactive animation, of a beating red heart, plays as the MCU processes the data received from the sensor before displaying it on the LCD.

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