Bathroom Odor Detector with BLE

The combination of Renesas’ ZMOD4410 indoor air quality sensor, HS3003 temperature and humidity sensor, and RA4W1 microcontroller (MCU) enables users to detect gases in the bathroom. Odor levels, temperature, and humidity values can be monitored through a handy device with BLE 5.0 communication. The RX23W or RA4W1 is a 32-bit MCU with Bluetooth® 5.0 Low Energy and is very suitable for IoT endpoint devices. All the power on the sensor board is provided by the ISL9001A high-performance LDO and Li-ion battery. The ISL9301 is a high input voltage charger with a power path management charger for single-cell Li-ion/Polymer batteries.

System Features and Benefits

• Renesas MCU with BLE 5.0 controls the system and wireless communication
• High-performance and high input voltage charger with low input voltage/high PSRR LDO
• The ZMOD4410 gas sensor module is a software configurable platform used for indoor air quality applications
• BLE 5.0 application controller with Arm® Cortex®-M4 core at 48 MHz MCUs with small 56-pin QFN packages, 512 KH Flash memory, and 96 KB SRAM, including segment LCD controller, capacitive touch sensing, USB full-speed, 14-bit A/D converter and security features
• Fully-integrated high input voltage single-cell Li-ion battery charger with power path management function
• 300 mA output current and output voltage can be programmed from 8 V to 5.5 V (T_J= -40°C to +125°C)
• High-sensitivity and long-term stability enables the customer to release product families via SW changes, international accepted definition of indoor air quality (IAQ), calculation of estimated carbon dioxide (eCO2)
• Highly-accurate, fully-calibrated relative humidity and temperature sensor