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Advanced flight computer software for high-powered rockets based on the Teensy platform. 4 programmable pyro outputs, Mach immune flight events, air-start & two-stage capable w/ tilt-sensing safety features, GPS & live telemetry. High-rate data logging at 1600 samples per second. Compatible with a wide variety of commercial sensors.
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SparkyVT/HPR-Rocket-Flight-Computer
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*NOTE: I get many messages expressing interest in this system. I plan on offering an Arduino programmable filght computer with open source code by mid-2024. Until then, there are 5 hardware options to use this code. Scroll to the bottom to view the 5 options. My website is not yet running, but you can contact me at https://www.rocketryforum.com/members/sparkyvt.810/ HPR Rocket Flight Computer Original sketch by SparkyVT NAR #85720, L3 TRA #12111, L3 --------DESCRIPTION---------- This flight computer is designed for rockets 38mm in diameter or greater, and will fit inside a 38mm tube coupler. Dimensions are 4.0in x 1.25in x 0.5in, antenna configuration may add more length It has similar capability as a TeleMega, but without a smart-phone app or advanced interfaces Flight-tested on multiple M-and-N powered supersonic flights to over 34K feet and Mach 2.3. For large or high-power projects, a commercially avialble backup computer is strongly recommended. --------FEATURES---------- Full-featured dual deploy/multi-stage/airstart rocket flight computer capable to 100,000ft or more Tilt-sensing lockout for ignition of second stages and/or airstarts Live telemetry over 433MHz or 915MHz LoRa (433MHz: USA amateur 70cm band, EUR licencse free) (915MHz: USA licence free) 4 high-current pyro outputs with continuity checks Advanced MEMS sensor package: GNSS, accelerometers, gyroscope, magnetometer, barometer, and LoRa radio High Data-Capture rate: approximately 50,000 samples per second recorded to SD card --1600Hz 3-axis digital 24G and 100G accelerometer data logging --1600Hz 3-axis digital 2000dps gyroscope data logging --1600Hz of flight events & continuity data logging --1600Hz of sensor-fuzed speed & altitude --100Hz of pitch, yaw, roll rotation --40Hz of of magnetic data logging and magnetic roll --30Hz-100Hz of digital barometric data logging (Altitude, pressure, temperature) --30Hz of main battery voltage (1400Hz during pyro events) --20Hz of LoRa telemetry output (time, event, acceleration, speed, altitude, rotation, GNSS position, signal strength) --5Hz-25Hz of GNSS data logging (chip-dependent data rates & constellations) --Separate data file for each flight up to 100 flights --Optional separate GNSS NMEA capture file for plotting in Google Earth, UBLOX NEO-M9N configurtion approved for TRA altitude record attempts Simple, easy-to-use configuration interface through the SD card --User Selectable Flight Mode: Single-Stage, Two-Stage, Airstart, or Booster --Configurable Apogee delay --Optional Audible Battery Voltage report at startup --Optional Magnetic Switch Startup & Shut-down --Preflight audible reporting options: Perfectflight or Marsa --User selectable telemetry frequency & power settings --8 configurable servo outputs (4 powered, 4 un-powered) --User selectable inflight brownout recovery Mach immune, sensor-fusion based apogee event Barometric based main deploy event Audible pre-flight continuity report Audible Post-flight max altitude & speed report Mount in any orientation, automatic orientation detection with built-in self calibration mode Bench-test mode activated w/ tactile button; user configurable status messages over USB Serial Report in SI or Metric units Compatible with Teensy 3.2, 3.5, 3.6, 4.0, 4.1 --Connect any sensor to any available I2C or SPI bus --Create your own custom hardware setup with configurable pins for continuity, firing, and servos --Connect UBLOX GPS unit to any available HW Serial port --------FLIGHT COMPUTER COMPONENTS---------- Microprocessor: Teensy 4.1, 3.5, or 3.6 (compatible with provided PCB file) or Teensy 4.0/3.2 (no PCB file provided) IMU: LSM6DSOX (recommended), LSM9DS1, LSM6DS33, MPU6050, or LSM303 & L3GD20H combo Magnetometer: LIS3MDL (recommended), LSM9DS1, or LSM303 100G Accelerometer: H3LIS331DL (recommended), ADXL377, or ADXL377 & ADS1115 combo Pressure Sensor: MS5611 (recommended), MS5607, MPL3115A2, BMP180, BMP280, or BMP388 (Note: BMP280 & BMP388 incompatible with telemetry due to EMI) GNSS: UBLOX M6, M7, M8, M9 (NEO footprint supported in PCB file) or Adafruit Ultimate GPS LoRa Telemetry: RFM96W or RFM95W, both capable of TX on 433MHz or 915MHz (433MHz USA: Amateur License Required, EUR: License Free) --------GROUND STATION COMPONENTS---------- MCU: Arduino Nano 33 BLE Telemetry: RFM96W 433MHz (USA: Ham License Required, EUR: License Free) or RFM95W 915MHz (USA: License Free) GPS: Ublox SAM-M8Q (optional) IMU: Sparkfun LSM9DS1 breakout LCD: 20X4 Sparkfun LCD SD Card: Adafruit SD Card breakout board Antenna: 433Mhz 5-element Yagi (Ham Only) or 900Mhz (License Free) --------ADDITIONAL LIBRARIES REQUIRED---------- TinyGPS++ SDfat and/or SD ----------------HARDWARE OPTIONS---------------- OPTION 1: Assemble the unit yourself. Purchase a Teensy 4.0 or 4.1 and integrate the system with commercially availble sensor breakout boards. If you want to use high-current pyro outputs, then it is up to you to develop the continuity and firing circuitry. I have threaded standoffs and screws that are a perfect fit for the Adafruit breakout boards. OPTION 2: Contact me for a custom Teensy breakout board and add your own sensors. The breakout includes a Teensy 4.1, integrates 4x high-current pyro outputs, and 6 easy-to-use terminal blocks to integrate into your high-power rocket. Includes Qwiic connector to easily integrate your custom sensor package over I2C. Optional UBLOX SAM-M8Q integrated GNSS. OPTION 3: Contact me for a fully-functional Frankenstein-board. This integrates all sensors breakout boards onto a single main board that is 4.0 x 1.25 x 0.5 inches. Comes fully assembled, pre-programmed, calibrated, and tested. Configurations will vary, but quality will not. OPTION 4: Try your hand at assembling the Frankenstein-board yourself. This is a single bare-board with no breakouts attached. You will need to reflow the GNSS chip and hand-solder approximately 30 components. Instructions included. Contact me for for a bare-board. OPTION 5: Contact me for a fully assembled and tested ground station. Includes ground unit with 2 radios and 20x4 LCD mounted in a custom form-fitting box.
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Advanced flight computer software for high-powered rockets based on the Teensy platform. 4 programmable pyro outputs, Mach immune flight events, air-start & two-stage capable w/ tilt-sensing safety features, GPS & live telemetry. High-rate data logging at 1600 samples per second. Compatible with a wide variety of commercial sensors.
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