Photonicsguy.ca

NeXt Cube

photonicsguy — 2011-12-08T19:53:50-08:00

From Lost Root Password If you've forgotten the root password, you'll need to follow the following procedure to reset it so you can login as root. This is most helpful to people who've just purchased a used NeXT but don't know what the root password is. Reboot the system. Immdeiately after the "Testing System" message is replaced with "Loading from disk", hold down the right command key and press the tilde (~) on the numeric keypad. You …

My Electronic Projects

photonicsguy — 2011-11-09T08:34:21-08:00

(Automatically generated list) Online * Digikey - Supplier of choice * Sparkfun - Great hobby site, Interesting components, I've ordered quite a few parts from them. * BatchPCB.com - Great hobby site for fabricating PCB's * Adafruit - Useful components & dev boards * PALtronics - Canadian supplier for Semitec components * Mercury Microwave - Canadian supplier for Lansdale Semiconductor components

Optical Calcite

photonicsguy — 2011-10-27T12:24:24-08:00

Calcite has two different indices of refractive depending on the polarization of the incident light. - Print to page for use in a demonstration.

sidebar

photonicsguy — 2011-10-27T12:23:01-08:00

* Home * Contact * Education * Outdoors * GPS * Bicycling Trips * Kayaking * Rideau Canal * Navy Island * MythTV DVR System Upgrade * Projects * Electronics * Sump pump Monitor * GPS * Barometric Pressure sensor * Tire Pressure Sensor * 7-segment display module * 50 Amp 5 Volt Power Supply * Current Sensor * Optical Mouse

Ulexite (Television Stone) - created

photonicsguy — 2011-10-27T12:22:28-08:00

Gadgets

photonicsguy — 2011-10-27T12:21:08-08:00

* Optical Calcite * Ulexite (Television Stone) * Laser Pens * Doped marbles

Bicycling Trips

photonicsguy — 2011-10-27T12:13:48-08:00

* Barrie Bicycling Trips * Niagara Falls to Niagara on the Lake * Welland to Port Colborne

Kayaking - created

photonicsguy — 2011-10-27T12:12:32-08:00

* Oshawa Kayaking * Rideau Kayaking

Sump pump Monitor

photonicsguy — 2011-10-27T12:05:21-08:00

Files sump.pl #!/usr/bin/perl use Device::SerialPort; use DBI; require 'sump.inc.pl'; # Set up the serial port # 19200, 81N on the USB ftdi driver my $port = Device::SerialPort->new($SERIALPORT); $port->databits(8); $port->baudrate($SERIALBAUD); $port->parity("none"); $port->stopbits(1); $count=0; $OldPump=-1; $port->read(255); if($dbh = DBI->connect('DBI:mysql:'.$database.":$host",$user,$pw)) { $sql="INSERT INTO `$database`.`pump` (`dt`,`status`) VALUES (CURRENT_TIMESTAMP , NULL);"; #pr…

Sump pump Monitor

photonicsguy — 2011-09-29T18:14:38-08:00

Sump pump Monitor

photonicsguy — 2011-05-05T21:17:04-08:00

Sump pump Monitor

photonicsguy — 2010-12-12T19:05:21-08:00

Sump pump Monitor

jeff — 2010-11-09T19:55:35-08:00

Sump pump Monitor

photonicsguy — 2010-11-06T17:58:19-08:00

Sump pump Monitor

photonicsguy — 2010-11-06T10:56:23-08:00

Sump pump Monitor

photonicsguy — 2010-11-06T10:53:49-08:00

Sump pump Monitor

photonicsguy — 2010-11-04T08:30:09-08:00

Sump pump Monitor

photonicsguy — 2010-10-23T10:26:19-08:00

Sump pump Monitor

photonicsguy — 2010-10-23T10:25:04-08:00

Sump pump Monitor

photonicsguy — 2010-10-23T09:57:45-08:00