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Smart Crutch Reference Design
Renesas’ smart crutch integrates a heating element to the handle LED lighting
Renesas’ winning combination smart crutch provides auto alerts, such as GPS tracking, whether a user has fallen, heart rate, and more, via the NB-IoT module. The smart crutch integrates a heating element to the handle LED lighting. Additional features include IoT functions for auto-SOS, cloud/app monitoring, real-time positioning, track and monitoring, and other location-based services (LBS).
This reference design features a microcontroller (MCU), temperature/humidity sensor, light sensor, sensor module, and power products.
Features
- RA4M1 32-bit MCU provides rich communication and a touch sensor
- Features the ISL29035 light sensor, OB1203 sensor module, and HS3003 high precision temperature/humidity sensor
- Includes a high-efficiency charger and low quiescent current (IQ) power
- RA4M1 MCU
- Arm® Cortex®-M4 with floating point unit (FPU) offers a segment LCD controller and CTSU built on a highly efficient low power process and is supported by an open and flexible ecosystem concept
- Flexible software package (FSP) built-on FreeRTOS and is expandable to use other RTOS and middleware
- ISL9205D Li-ion battery chargers
- High-performance charger for single-cell Li-ion/polymer batteries, charge current from 50 mA to 900 mA
- ISL91127 buck-boost regulators
- High-efficiency buck-boost regulator can deliver at least 2 A continuous output current (VOUT = 3.3 V) over a battery voltage range of 2.5 V to 4.35 V.
- ISL29035 light sensors
- Integrated ambient and infrared light-to-digital converter with I2C (SMBus compatible) interface
- OB1203 sensors
- Multi-channel digital RGB/ambient light, proximity and photoplethysmography sensor
- HS3003 sensors
- Highly accurate fully calibrated relative humidity and temperature sensor
RA4M1 Microcontrollers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | R7FA4M1AB3CFL#AA0 | IC MCU 32BIT 256KB FLASH 48LFQFP | 4447 - Immediate | $3.95 | View Details |
|  | R7FA4M1AB3CFM#AA0 | IC MCU 32BIT 256KB FLASH 64LFQFP | 5065 - Immediate | $4.78 | View Details |
|  | R7FA4M1AB3CFP#AA0 | IC MCU 32BIT 256KB FLSH 100LFQFP | 370 - Immediate | $5.11 | View Details |
ISL9205D Li-ion Battery Chargers
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | ISL9205DIRZ | IC BATT CHG LI-ION 1CELL 10DFN | 525 - Immediate | $1.77 | View Details |
| | ISL9205DIRZ-T | IC BATT CHG LI-ION 1CELL 10DFN | 0 - Immediate | $0.88 | View Details |
ISL91127 Buck-Boost Regulators
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | ISL91127II2AZ-T7A | IC REG BUCK BOOST 2.1A 20WLCSP | 25 - Immediate | $1.99 | View Details |
| | ISL91127IIAZ-T7A | IC REG BUCK BOOST 2.1A 20WLCSP | 0 - Immediate | $1.99 | View Details |
| | ISL91127IINZ-T7A | IC REG BCK BST 3.3V 2.1A 20WLCSP | 535 - Immediate 750 - Factory Stock | $1.99 | View Details |
|  | ISL91127IRAZ-T7A | IC REG BUCK BST ADJ/1V 2A 20QFN | 11900 - Immediate | $2.66 | View Details |
| | ISL91127IRNZ-T7A | IC REG BUCK BOOST 3.3V 2A 20QFN | 451 - Immediate | $2.66 | View Details |
OB1203 Sensors
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | OB1203SD-C4R | SENSOR - BIOMONITOR SENSOR I2C | 0 - Immediate | $3.30 | View Details |
| | OB1203SD-C4V | SENSOR - BIOMONITOR SENSOR I2C | 0 - Immediate | $1.70 | View Details |
HS3003 Sensor
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
|  | HS3003 | SENSOR HUMIDITY 90% RH SMD | 2833 - Immediate | $2.96 | View Details |
Published: 2020-09-09
France