Dublin, 11th August 2017 – Shimmer would like to inform users that of August 2017 we will be shipping a new revision of our Shimmer3 GSR+ unit. The revision change concerns the kinematic sensors on the Shimmer3 GSR+ Board. A detailed overview of the changes from the original to the existing board can be seen below. The new revision will be fully compatible with all our current software offerings.
For queries or further information relating to this revision changes please email info@shimmersensing.com.
Overview Of Updates
| Original GSR+ Revision | New GSR+ Revision | |
| Wide-range Accelerometer | STMicro LSM303DLHC | STMicro LSM303AHTR |
| Range | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g |
| Sensitivity | 1631 LSB/g at ±2g | 1671 LSB/g at ±2g |
| Numeric Resolution | <=12-bit | 14-bit |
| Typical Operating Current | 110 µA (at 50 Hz) | <=162 µA |
| Low Noise Accelerometer | Kionix KXRB5-2042 | Kionix KXTC9-2050 |
| Range | ±2g | ±2g |
| Sensitivity | 600 mV/g (±18mV) | 660 mV/g (±20mV) |
| Numeric Resolution | 12-bit | 12-bit |
| Typical Operating Current | 500 µA | 240 µA |
| Noise density | 45 µg/√Hz | 125 µg/√Hz |
| Magnetometer | STMicro LSM303DLHC | STMicro LSM303AHTR |
| Range | ±1.3, ±1.9, ±2.5, ±4.0, ±4.7, ±5.6, ±8.1 gauss | ±49.152 gauss |
| Sensitivity | 1100 LSB/gauss at ±1.3 gauss | 667 LSB/gauss |
| Numeric Resolution | <=12-bit | 16-bit |
| Typical Operating Current | 110 µA (at 7.5 Hz) | <= 200 µA |
| RMS Noise | no data available | 3 mgauss |
| Gyroscope | Invensense MPU9150 | Invensense MPU9250 |
| Range | ±250, ±500, ±1000, ±2000 dps | ±250, ±500, ±1000, ±2000 dps |
| Sensitivity | 131 LSB/dps at ±250 dps | 131 LSB/dps at ±250 dps |
| Numeric Resolution | 16-bit | 16-bit |
| Typical Operating Current | 3.9 mA | 3.2 mA |
| RMS Noise | 0.06 dps | 0.1 dps |
| Pressure/Temperature Sensor | Bosch BMP180 | Bosch BMP280 |
| Range | 300 – 1100 hPa | 300 – 1100 hPa |
| Pressure Resolution | 1 Pa | 0.16 Pa |
| Temperature Resolution | 0.1°C | 0.01°C |
| Typical Operating Current | <= 32 µA at 1 Hz | <=24.8 µA at 1 Hz |
| RMS Noise | 3 Pa | 1.3 Pa |
