Cansat 2023/2024: Difference between revisions
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MPU-6050 accelerometer and gyroscope and temperature. | MPU-6050 accelerometer and gyroscope and temperature. | ||
=== SD card reader === | |||
Lot of different versions and vendors. Use SD and SPI libraries. | |||
Revision as of 11:03, 5 November 2023
Introduction
Use
- Raspberry Pi
- TF03 Lidar
- Temperature Sensor
- Pressure sensor
The price is totally
Theory / Hypothesis
Hypothesis. We are able to detect
Raspberry Pi
- Raspberry Pi Zero 2W
- Raspberry Pi Pico
- Raspberry Pi Zero W
- Raspberry Pi Zero
Radio
APC220
Antenna
Inputs
- SPI. Serial Peripheral Interface
- I2C
- UART (Serial) Transmit: GPIO14, receive: GPIO15. We need more UART (Lidar and radio) USB UART (FTDI) is possible. https://www.dfrobot.com/index.php?route=product/product&product_id=147#.UOamLG-sh8E Raspberry Pi 4 supports 4 UART interfaces (https://forums.raspberrypi.com//viewtopic.php?t=244827).
Analog to digital converters.
Analog Inputs
Eg. MCP3008 analog-to-digital converter (ADC). See https://randomnerdtutorials.com/raspberry-pi-analog-inputs-python-mcp3008/ This requires soldering and a lot of wires.
PiMoroni IO Expander.
Temp
- DS18B20 + 4.7 kOhm resistor. DS18B20 is a digital
- DHT11 Temp and humidity sensor
- NTC and ADC
Pressure
Some Sensors available
Prefer a tubed version!
- MPRLS Ported Pressure Sensor: Attach a tube on it. I2C
- SCP1000 Pressure sensor breakout board
- BMP180
- GY-BMP280
- BME680
- MPS20N0040D Pressure Transducer
LidaR TF03
TF (ToF; Time of Flight). https://www.sparkfun.com/products/19421
- Range ~100 m
- Resolution ~0.01 m/ Accuracy 0.1 m.
- Frame rate 1Hz - 1000 Hz
- wavelength: 905 nm. Laser class 1 (IEC 60825)
- Angle 0.5 deg; Spot size @100 m 28x28 cm2.
- Current ˝200 mA. Power ~1W
- Dimensions 44x43x32 mm3.
- Weight 77g
- IP67
- Connector: Molex 1.25 or Molex SD-51021-007 (1.25 W/B) 7 pin or mh1.25-7p. Pin to pin pitch is 1.25 mm. Identity electrical connectors: https://core-electronics.com.au/guides/Identify-Electrical-Connectors/#Molex
See more
- https://cdn.sparkfun.com/assets/2/c/5/6/0/Benewake_10152020_TF03_100-1954064.pdf
- https://cdn.sparkfun.com/assets/4/e/5/b/5/PM-15180.pdf
Need to measure angle. Use an accelerometer
Laser safety.
IMU
MPU-6050 accelerometer and gyroscope and temperature.
SD card reader
Lot of different versions and vendors. Use SD and SPI libraries.
