The DOF10W is a sophisticated sensor
platform with ten Degrees Of Freedom (DOF). The DOF10W combines a
3-Axis Accelerometer (ADXL345), 3-Axis Rate Gyro (L3G4200D), 3-Axis
Magnetometer (HMC5883) and a Barometer (BMP085) on a single PCB that can
attach to a Wasp Data Logger. All four MEMs sensors are digital with
either an SPI or I2C interface.
The Accelerometer is capable of 4mG
resolution over a +-16G range. The Rate Gyro has three ranges -
250, 500 and 2000 deg/sec with a low range sensitivity of 17mdps. The
Magnetometer has eight ranges with a nominal resolution of 10mGauss.
The Barometer has an absolution accuracy of 8meters and a resolution of
Truly a unique combination of sensors.
Source code is provided that configures all the sensors and allows the
creation of a 10 DOF data logger when combined with either a Wasp, WaspARM
or WaspX embedded processor.
o 10 Sensors
integrated on one PCB
o 3-Axis Accelerometer
o 3-Axis Rate Gyro L3G4200D
o 3-Axis Magnetometer HMC5883
o Barometer BMP085 with 8m accuracy and 0.8m resolution
o All digital sensors
o 0R resistors
connect INT outputs to control processor
o Example application included for rapid application development
o 1.8-3.6VDC power input
o Extremely Small form factor (1.50x1.15 in)
The DOF10W is an extremely compact embedded IMU sensor platform for mobile
data acquisition, instrumentation and remote monitoring applications.
The DOF10W is an all digital implements with no requirement for AD
3-Axis accelerometer is an Analog Devices ADXL345. The ADXL345 has
four programmable acceleration ranges- 2G, 4G, 8G and 16G set by the
ADXL345 operates from 2.2
to 3.6Vdrawing 140uA so the Wasp should not be powered higher than 3.6V when
the accelerometer is installed. The accelerometer has a sensitivity of
4mG over the full 16G range, a bandwidth of 3500Hz (XY) 150Hz (Z),
non-linearity less than 1% and a cross-axis sensitivity less than 1%.
The accelerometer is oriented
with the X+ on the long axis of the PCB toward Port A connector J1, Y+ on
the short axis of the PCB toward Port B connector J2 and Z+ pointing up out
of the board.
3-Axis Rate Gyro
3-Axis Rate Gyro is an STMicroelectronics L3G4200D. The
L3G4200D has three
programmable gyro ranges- 250, 500 and 200dps set by the ATmega644.
The L3G4200D operates from 2.2 to 3.6Vdrawing
6mA so the Wasp should not be powered higher than 3.6V when the
accelerometer is installed. The Gyro has a sensitivity of 17mdps
(250dps setting), a bandwidth of 350Hz (XY) 150Hz (Z),
non-linearity less than 1% and a cross-axis sensitivity less than 5%.
3-Axis Magnetometer is a Honeywell HMC5883. The
HMC5883 has eight
programmable gauss ranges- 0.88G, 1.3G, 4G and 8.1G set by the ATmega644.
The HMC5883 operates from 2.2 to 3.6Vdrawing
100uA so the Wasp should not be powered higher than 3.6V when the
accelerometer is installed. The
Magnetometer has a
sensitivity of 2mG (1.3g setting), a bandwidth of 350Hz (XY)
150Hz (Z), non-linearity less than 1% and a cross-axis sensitivity less than
The following products can be used with the DOF10W:
AVR Embedded Processor Data Logger
ARM7 version of the Wasp
USB 2.0 Peripheral based on the AT90USB162
4x12 Monochrome LCD with onboard ATmega168 and optional 3-axis Accelerometer