Ruggeduino-XTR Technical Data

The Ruggeduino-XTR is based on our Ruggeduino-MINI SMALLS microcontroller board which is a Ruggeduino in miniature. We stepped things up even further and added a host of features including on-board integrated relays, VS1838 IR Remote Receiver, Piezo buzzer, extra connectivity options, and even more built-in protection.

Detailed Specifications

ATMEGA328P-MUR Microcontroller

Core Size 8-Bit

Speed 20MHz

Connectivity I2C, SPI, UART/USART

Memory 32KB (16x16) FLASH

EPROM 1K X 8

RAM Size 2K X 8

Data Converters A/D 8 X 10b

Operating Temperature -10C to +85C

16MHZ Ceramic Resonator

Omron G5LE-14 DC5 SPDT 10 Amp 5V Coil Switching Voltage 250VAC, 125VDC - Max

Omron data sheet found here

Switching Voltage Regulator- 3.5V - 30V DC Input / 5V 600mA Output

Micro USB Type B Connector

3.5MM Heavy Duty Screw Terminals

Audio Piezo 1-20V 4KHz Single Tone Transducer

Audio Piezo data sheet found here

IR Remote Receiver 45m sensing distance

IR Remote Receiver data sheet found here

Address Discrete Serial RGB LED data sheet found here

Schematics

Below are schematics which showcase the extra (XTR-a) features which makes the Ruggeduino-XTR novel.

Relay Outputs and Configuration

IR Recieiver, Buzzer, and Addressable LED

Applications

Below is a picture of the Ruggeduino-XTR integrated into a high-end piece of furniture to operate RFID locks. Note that the drawer has been removed for picture purposes.This board makes creation and installation of professional door-lock and drawer-lock projects easy. The board is designed to use a single power supply (6-30 volts) that matches your lock mechanism. Built-in diodes keep the XTR safe from back-EMF produced by inductive locks or motors.

You provide:

* Power supply (adapter or batteries)

* Lock mechanism(s)

* RFID Reader(s)

A provided library (github.com/chipguyhere/PulseCapture) allows you to connect one (or several) Wiegand or TTL Serial RFID readers to any of the 20 general-purpose I/O terminals. XTR's two built-in relays allow for switched power connection to two drawers or drawers without adding any additional relay packs. Alternatively, you can use one of the relays as a power control switch so that your lock project can run on a single set of batteries for months or years. *

* How to use the relay as a battery saver: The scenario is powering up the board via a switch, just long enough to unlock a door or drawer, and then allowing the board to completely power off, conserving the battery. Instead of powering through VIN/GND, power the board with batteries through Relay 2 GND/NO. Use a momentary pushbutton to put battery power to VIN to turn on the board. The sketch should immediately hold relay 2 closed, so the board can "do business" after the power pushbutton gets released, and then the sketch can release the relay to conserve batteries when the business is done. If done correctly, eight lithium AA cells might last years if used to power a lock that gets opened infrequently.

The built-in IR reader, LED, and beeper, allow for the coding of a basic user interface for adding and removing RFID users with the aid of an infrared remote control. This eliminates the need to hard-code the list of acceptable user ID's into the Arduino sketch.

Compatible hardware: nearly any RFID reader on Amazon that can produce a "Wiegand 26" or "Wiegand 34" signal, will work with the Ruggeduino XTR, simply by connecting the D0 and D1 wires to any two unused digital or analog I/O's on the XTR. Also, any RS232 TTL reader will work, through a single I/O pin on the XTR.

Dimensional Data

Ruggeduino-XTR is geared toward an advanced Arduino user with limited tech support available at this time. Please select MINI in the Arduino IDE to operate the board. Refer to our Ruggeduino-MINI SMALLs technical pages for general board details.