====== VREL Raspberry-Arduino  ======

Arduino based remote lab can be included into DistanceLab environement via Raspberry programming server.

Reccommended hardware set:
  - Raspberry Pi Model B ver 3
    * Power Supply
    * Case
    * SD card
  - HD Webcam C270 - Logitech
  - Arduino Uno (or clone)
  - 1610 LCD shield with analog pinout (e.g. [[https://www.ittgroup.ee/en/arduino-shields/114-lcd-keypad-shield-for-arduino.html|Itead Keypad Shield]])
  - Temperature sensor with voltage divider (e.g. [[https://www.ittgroup.ee/en/sensors-and-accessories/697-thermistor-ntc-10k.html|Thermistor NTC 10K]] + [[https://www.ittgroup.ee/en/wires/751-voltage-divider-for-resitive-sensors-10k.html|voltage divider wire]])
  - Small servo motor (e.g. [[https://www.ittgroup.ee/en/motors-gears-and-wheels/479-servo-micro-360-deg-fs90r.html?search_query=servo&results=53|Servo micro]])
  - USB cable between Raspberry and Arduino

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===== Set-up and connection =====

  * Install default Rasbian from raspberrypi.org and establish internet connection for Raspberry Pi
  * Connect webcam to Raspberry Pi USB port
  * Connect Arduino to another Raspberry Pi USB port
  * Mount LCD shield on the top of Arduino and connect temperature sensor and servo motor to analog inputs
  * Point camera to view Arduino LCD (check focus - C270 would approx. 40 cm)
  * Make sure that Raspberry ports 22 and 8080 (you can use whatever open port you want for webcamera) are accessible from outside of organization network
  * Send ip address and Raspberry credentials to developer (ITT Group contact person)