1. Tiltmeter, Compass,Temperature modules for the PPM

2. 2 Dual Axis Inclinometer Measurement Range +/-25° Digital Output Signal via I2C Accuracy ±0.1 ° Resolution 0.02 ° Dimensions W x D x H 25 x 25 x 16 mm Tiltmeter The NS-25/DQL2-IXA is a small board inclinometer based on dual axis tilt sensor, which works based on the conductivity principle. This microprocessor controls the inclinometer with a linearized and temperature compensated angle output signal via I2C.

3. 3 Precision Compass: 0.5 degrees nominal heading accuracy 0.1 resolution Roll & Pitch full rotation (<1 degree (0-60 degrees)) Tilt-compensated (electronically gimbaled) Hard and soft-iron compensation routines 3 Axis Honeywell Magneto Resistive Sensors 3 Axis ST Accelerometer for Roll and Pitch Angle Measurement (Full Range) Design uses 24 bit A/D converter 50 MIPS processor supporting IEEE floating point math TTL Serial version (19200bps default) - software CD is included! Baud rate programmable: 4,800 to 115,000 baud Low Power Circuit Consumption: 3.3V - 5V @ <30ma High data update rate to 40HZ Support for True or Magnetic North output 0.12 x 0.6 x 0.6 inches Tilt compensated compass (Ref.)

4. 4 Tilt compensated compass (a) Description: The HMC6343 is a solid-state compass module with tilt compensation from Honeywell. The HMC6343 has three axis of magneto, three axis of accelerometer, and a PIC core running all the calculations. What you get is a compass heading over I2C that stays the same even as you tilt the board. Solid-state (and many classic water based) compasses fail badly when not held flat. The tilt compensated HMC6343 is crucial for those real-world compass applications. Features: I2C interface 2 degree heading accuracy All in one compass solution Compass heading and tilt outputs Dimensions: 0.8x0.8"

5. 5 Tilt compensated compass (b) Description: The LSM303DLH is a triple axis accelerometer combined with a triple axis magnetic sensor. This breakout board uses the LSM303DLH to give a you the data you need to feed into a microcontroller and calculate tilt-compensated output. Features: +- 2/4/8 g dynamically selectable full-scale +-1.3 to +- 8.1 gauss magnetic field full-scale 16-bit data out I2C interface Embedded self-test

6. 6 Temperature module I2C module for Temperature sensor (PT1000) Route I2C bus within the DOM pole pin strip 1 VDD Supply Voltage +6... 24 V DC 2 GND Ground 3 SDA Serial Data I2C 4 SCL Serial Clock I2C 5 V_TEMP Temperature Voltage Output 6 GND Ground Platinum temperature sensors are divided into A and B classes. These specify the dependence of allowable temperature error ΔT of the real temperature T. Error limits of class in °C: Class A: ΔT = ± (0.15 °C + 0.002 · T) Class B: ΔT = ± (0.30 °C + 0.005 · T) 1/3 Class B: ΔT = ± (1/3 · (0.30 °C + 0.005 · T)) 1/10 Class B: ΔT = ± (1/10 · (0.30 °C + 0.005 · T))

7. 7 Temperature module I2C module for Temperature sensor (PT1000) Route I2C bus within the DOM pole pin strip 1 VDD Supply Voltage +6... 24 V DC 2 GND Ground 3 SDA Serial Data I2C 4 SCL Serial Clock I2C 5 V_TEMP Temperature Voltage Output 6 GND Ground Platinum temperature sensors are divided into A and B classes. These specify the dependence of allowable temperature error ΔT of the real temperature T. Error limits of class in °C: Class A: ΔT = ± (0.15 °C + 0.002 · T) Class B: ΔT = ± (0.30 °C + 0.005 · T) 1/3 Class B: ΔT = ± (1/3 · (0.30 °C + 0.005 · T)) 1/10 Class B: ΔT = ± (1/10 · (0.30 °C + 0.005 · T)) INTERESTING...BUT, DO WE REALLY NEED IT FOR THE PPM ? INSTEAD USE SYSTEM TEMPERATURE (A) ELECTRONICS (INSIDE THE FPGA MODULE) (B) CENTRAL LOGIC BOARD MAY HAVE IS THERE A CALIBRATION REQUIREMENT TO MEASURE TEMPERATURE ANYWHERE ELSE IN THE DOM ? INTERESTING...BUT, DO WE REALLY NEED IT FOR THE PPM ? INSTEAD USE SYSTEM TEMPERATURES (A) ELECTRONICS (INSIDE THE FPGA MODULE) (B) CENTRAL LOGIC BOARD IS THERE A CALIBRATION REQUIREMENT TO MEASURE TEMPERATURE ANYWHERE ELSE IN THE DOM ?

8. 8 Sensors board layout in progress Sensors PCB hosting Tiltmeter, compass (if needed multiple Temperature sensors) to interface with Central Logic Board –Definition of interface (mounting, power, readout) is in progress Next talk on readout firmware for sensors