/** \file * * This file contains special DoxyGen information for the generation of the main page and other special * documentation pages. It is not a project source file. */ /** \mainpage OB's Quad-Relay outlet control using a Teensy2++ * * \section Sec_Compat Project Compatibility: * * The following list indicates what microcontrollers are compatible with this project. * * \li AT90USB1286 * * \section Sec_Info USB Information: * * The following table gives a rundown of the USB utilization of this project. * * * * * * * * * * * * * * * * * * * * * * *
USB Mode:Device
USB Class:None
USB Subclass:None
Relevant Standards:USB Standards
Supported USB Speeds:Low Speed Mode, Full Speed Mode
* * \section Sec_Description Project Description: * * Firmware for a Teensy2++ AVR-based miniboard to control four relays, using the * same protocol used by the commercially available Silver Shield PM power outlets * ( http://sourceforge.net/projects/sispmctl ) sold for some time. Because this * project mimics the original device, it can be controlled using the "sismpctl" * package included in many Linux distributions - including router-orientated * versions such as OpenWRT - to control the board's relays. * * Relays 1 to 4 are respectively wired to pins C4, C5, C6 and C7 of the Teensy++ V2, * which are the PORTC bits 4 to 7 of the AT90USB1286. The relays MUST be wired through * a transistor, and a diode must be added in antiparallel on the relay's coil pins to * protect the transistor from back EMF generated from the relay when the coil is turned off. * The transistor base pin is wired to the Teensy data port through a 10K resistor. A * LED may be also be added as a relay status indicator on each channel. * * The Relay coil will be driven by the transistor, but the power will come from * the 5V from the PC's USB port: Be careful in choosing the relay to avoid overloading * the PC, as the maximum current used MUST remains under ~450mA @ 5V. * * The author's tested relays are 2 Finder 32.21.7.005.2000, coil il 125ohm, which can * handle 5A @ 250VAC. Be careful to use proper isolation if high voltages are manipulated. * The author used Hotglue to isolate all parts of the PCB in contact with high voltage. * * See http://www.pjrc.com/teensy/ for the Teensy2++ website. * * * * * * * * * * * * * * * * * * * * * * * * * * *
Signal:AVR Port:
Relay 1PORTC, Pin 4
Relay 2PORTC, Pin 5
Relay 3PORTC, Pin 6
Relay 4PORTC, Pin 7
Teensy2++ Yellow LedPORTD, pin 6
* */