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I/O Breakout Board

This document details the I/O breakout board design featuring the TI ADS1178 for precise calculations of airspeed, altitude, and temperature sensors. It outlines key calculations for sensor voltage references, detailing the analog output values used for airspeed, altitude, and temperature with various configurations. Furthermore, it covers digital peripherals including a Tyco Electronics GPS using UART, and an Analog Devices IMU over SPI, along with telemetry options. The manual override for multiplexer ICs and connections for Pitot-static probes are also discussed.

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I/O Breakout Board

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  1. I/O Breakout Board

  2. I/O Breakout Board

  3. TI ADS1178 V- Calculation Airspeed Sensor: (4.7V + .2V)/2 = 2.45V Altitude Sensor: ( 4.5V + .5V)/2 = 2.5V Temperature Sensor: (4.986V + .229V) / 2 = 2.493V I/O Breakout Board Vref Calculation Airspeed Sensor: (4.7V - .2V)/2 = 2.25V Altitude Sensor: ( 4.5V - .5V)/2 = 2.0V Temperature Sensor: (4.986V -.229V) / 2 = 2.38V

  4. Digital Peripherals: Tyco Electronics GPS – UART (NMEA) Analog Devices IMU – SPI Telemetry (P10231) – I2C, SPI, UART I/O Breakout Board

  5. MUX IC Manual Override: 2 – Quad 2 to 1 multiplexers I/O Breakout Board

  6. Molex 24 position connector Pitot-Static Probe (Airspeed) I/O Breakout Board Ram Air Pressure Stagnation (Static) Standard DSUB Connectors

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