Raspberry Pi

Simple things used in every Project

Raspistill

raspistill -w 2592 -h 1944 -o name.jpg

Take a photo and send it to an external server Template:GithubDownload

<script src="https://emgithub.com/embed.js?target=https%3A%2F%2Fgithub.com%2Fpytorch%2Fpytorch%2Fblob%2Fmaster%2Ftorch%2Fnn%2Fcpp.py&style=github&showBorder=on&showLineNumbers=on&showFileMeta=on"></script>

Finding the IP address

The SSH is disable by default after 2016. Below is show how to enable without using keyboard.

Use nmap -F 192.168.8.1-254 to fast scan all devices in the local network. The default passwords are listed at Raspberry pi default login-password.

Try ping raspberrypi.local.

Enable ssh

On another computer, mount the Raspian boot SD card, navigate to the boot folder cd /Volumes/boot, create a blank file called ssh touch ssh. That's all.

Using the Raspian GUI: Preferences -> Raspberry Pi Configuration -> Interfaces -> SSH.

Using the terminal: sudo raspi-config or use systemctl:

sudo systemctl enable ssh
sudo systemctl start ssh

Project Ideas

• Bluetooth LE & Polar Heart Beat Monitor
• Camera piano
• Controlling CD Drive motor
• Info TV/ Dashboad
• Microscope and photo stacking
• Online thermometer with local backup
• Sound spectrum
• Weather station --- Raspberry Pi

Peripherals

• Analog sensors https://www.rototron.info/raspberry-pi-analog-water-sensor-tutorial/
• Camera
• Dissolved oxygen meter https://www.instructables.com/Plotly-Atlas-Scientific-Graph-Real-Time-Dissolved-/ https://elexhub.com/product/gravity-analog-dissolved-oxygen-sensor-meter-kit/ https://how2electronics.com/dissolved-oxygen-sensor-arduino-interfacing-tutorial/ https://atlas-scientific.com/circuits/ezo-dissolved-oxygen-circuit/# https://atlas-scientific.com/probes/dissolved-oxygen-probe/
• Laptop Keyboard: https://raspberrypi.stackexchange.com/questions/5007/using-an-old-laptop-keyboard-with-raspberry-pi https://www.youtube.com/watch?v=AKWheG8wKxM
• Temperature, pH

Sensors

• MG-811 MG811 CO2 Carbon Dioxide Sensor For Arduino UNO R3 Raspberry Pi
• CCS811 CO2 Carbon Dioxide Detector Air Quality Monitor Meter Sensor for Arduino
• MQ-2 Kohlenmonoxid Sensor CO Gas-Sensor, Rauch-Sensor, Raspberry Pi, Arduino
• CJMCU MICS 6814 Kohlenmonoxid Stickstoff Sauerstoff Sensor Co No2 Nh3 Arduino
• MH-Z19 IR infrared Carbon Dioxide Gas Sensor For Air CO2 Concentration Monitor
• Environment Sensor HAT für Raspberry Pi Zero 2 W WH A 3 Model B Plus 4 2GB 8GB
• SCD30 Air Quality Sensors Module for CO2 and RH/T Measurements I2C PWM Modbus

Bluetooth

Setting up the Raspberry Pi.

Raspberry Pi and EV3-G

Raspberry Pi and Ev3Dev

Erase the SD card

Use camera to format the SD card, or see https://www.raspberrypi.org/forums/viewtopic.php?t=204167 .

Bluetooth on Raspi 3

sudo apt update
sudo apt upgrade
sudo apt-get install python-bluez
#sudo apt install bluetooth pi-bluetooth bluez blueman

sudo nano /etc/systemd/system/dbus-org.bluez.service. Modify ExecStart=/usr/lib/bluetooth/bluetoothd –C

sudo sdptool add SP

sudo reboot

sudo apt-get install bluetooth bluez libbluetooth-dev
sudo python3 -m pip install pybluez