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Tricorder-RaspberryPi

The most advanced Tricorder device from Star Trek yet implemented. If you ever ask yourself “is the sky more red at sunset?”, “how clean is my air?”, “how bright is my TV?”, “what flower is this?”, “how hot is this object?”, “how busy are the airwaves?”, and seek the answer in real-time, beautifully visualized 8-bit color, then this is the device for you.

Docs

https://tricorder-raspberrypi.readthedocs.io/en/latest/

https://shivamkundan.godaddysites.com/tricorder

Software

C (Arduino IDE),
Python,
GUI: Pygame,
Machine Learning: TensorFlow
Linux commands and tweaks

Hardware

List of parts

This project contains an incredible number of components. Pretty much every environmental sensor that is commercial off-the-shelf.

Currently, the components use through-hole pins that are soldered manually using a soldering iron. Next step is to acquire Surface Mount Device (SMD) soldering/handling hardware which will drastically reduce the size, weight, and volume of the sensors.

The following is a list of parts used in the design. Note that almost every sensor senses more than one quantity, with some even having separate x,y,z channels for each (such as the IMU). This is why its difficult to say how many sensors are utilized, since the count is dependent upon what one considers to be a sensor.

Type Model #
Single board computer RaspberryPi 4 1
Touchscreen display Pimoroni Hyperpixel Square 1
Microprocessor w/ BT Adafruit ESP32 Feather V2 1
Aux OLEDs Generic 128x64 2
Printed Circuit Boards JLCPCB 2-layer 4
Digital sensor boards Multiple 14
Analog sensors Multiple 5
Software Defined Radio (SDR) Dongle + 'DVB-T' antenna RTL2832U w/ R820T tuner 1
I2C active extender & terminator Adafruit LTC4311 1
I2C bi-directional isolator Adafruit ISO1540 1
IR-CUT Camera + IR blasters Generic 1
N-Channel MOSFETs Generic 3
Bidirectional voltage shifter Generic 2
Buck-boost convertor Adafruit Powerboost 1000 1
Battery monitor & fuel gauge Adafruit LC709203 1
Lithium-polymer battery (for sensors+MCU) Adafruit 2500mAH 1
Battery bank w/ passthrough for raspberry pi 10,000mAH 1
Neopixels (i.e., RGBW LEDS) Adafruit Neopixel Stick 8x-5050 ~4500K 1
Magnet for optical/IR camera Adafruit magnetic pin back 1
Assorted resistors, switches, etc. --- 1

List of Sensors

After much experimentation and pondering, I try to buy Adafruit's version of parts whenever possible because of their incredible libraries.

Sensor Type
AS7341 10-channel photo spectrometer Digital
LTR390 UV sensor Digital
TSL2591 infrared + visible light sensor Digital
HTU31D temperature + humidity sensor Digital
BMP388 barometric pressure sensor Digital
SGP30 volatile organic compunds + CO2 sensor Digital
MLX90640 IR thermal camera Digital
MAX9814 electret microphone amplifier with auto gain control (noise) Analog
Modern Devices Rev. C wind speed sensor Analog
BNO055 9-DOF absolute orientation inertial measurement unit Digital
PMSA003I particulate matter (dust) sensor Digital
DFRobot Geiger counter (ionizing radiation) Analog
Garmin LIDAR-Lite V3 optical distance sensor Digital
BN880 GPS/GLONASS/Beidou positioning sensor Digital
INA260 voltage, current, power sensor Digital
Force-Sensitive Resistor (FSR) - Alpha MF02A-N-221-A01 (weight) Analog