https://www.photonicsguy.ca/ 2026-04-07T02:23:24+00:00 https://www.photonicsguy.ca/ https://www.photonicsguy.ca/_media/wiki/dokuwiki.svg text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/tirepressuresensor/code?rev=1415904614&do=diff Tire Pressure Sensor Code Return to Tire Pressure Sensor Project. ;############################################################################### ;# TITLE "Pressure Sense" ;# ;# Program : Pressure sensor using an MPX5700DP sensor and LCD display ;# Version :1.0 ;# Revision Date : ;# Author : Jeff Brown ;# ;# ;# ;############################################################################### ; radix hex #define RA0_… text/html 2016-03-09T02:48:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/mysensors?rev=1457491680&do=diff MySensor board After reading about the MySensors project, I decided to design a small circuit board to hold the Arduino and radio module. Status: * Nov 25th: I've assembled two working boards. Imgur photos * Nov 24th: I received the boards, Yay!! * Nov 7th, 2014: I'm waiting on the PCB's from text/html 2016-03-09T00:46:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/sumppump?rev=1457484383&do=diff Sump pump Monitor My parents have a cistern and a sump pump which would be useful to have some sort of water level monitoring. In the past, we would check the cistern level with a pressure gauge calibrated in inches of water. There was a rubber squeeze bulb which which would pressurize a plastic line which fed into the cistern, and the resulting level would be shown on the gauge. text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/stirlingengine?rev=1415904614&do=diff Stirling Engine Raw materials purchased: * Brass tube - 19/32×0.014 * Brass tube - 9/16×0.014 * Brass rod - 3/32 * Brass tube - 1/8×0.014 text/html 2021-07-06T14:15:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/t530?rev=1625580959&do=diff Lenovo T530 Laptop WiFi upgrade I successfully installed an Intel Dual Band Wireless-AC 7260 wireless card by modifying the whitelist in the BIOS. I've compiled this step-by-step guide with references as I had trouble finding a similar resource online. Living in Toronto, the 2.4GHz WiFi band is over saturated and my best wireless throughput was roughly 16Mbps, now with 5GHz Wireless AC, I get an average of 700Mbps. I decided not to upgrade to the latest BIOS and to attempt the whitelist modifi… text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/dgpsbeaconrx?rev=1415904614&do=diff DGPS-11 Beacon Receiver Si-tex DGPS-11 Beacon Receiver module mounted in a weatherproof housing. Wire Function Red+3A fused 10.8 to 31.2VDC OrangeRS-232C In WhiteRS-232C Out Black- Negative BlueTTL Out GreenData Ground BrownShield GroundHow can I tell if my WAAS GPS is giving me a corrected fix? Look for a "D" in your Latitude/Longitude readout. text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/sdgpslogger?rev=1415904614&do=diff SD GPS Track Logger Why? This is why:Bicycling Trips ICSP Connector Need a PIC18 chip with more memory, I'm using the PIC18F4685 with 96Kbytes of program memory. Microchip Mass Storage Class Firmware [Still not working] Still not working. Might be software or hardware, I'll need to check it on a digital oscilloscope. Correct clock rate (less than 400KHz). text/html 2014-11-13T22:37:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/7segdisplay?rev=1415918236&do=diff 7-segment display module [Working Display] Arduino library available on Github This was one of my first doublesided and surfacemount boards. I made this board using Eagle for layout and then I used BatchPCB to manufacture the board. The board operates correctly, however, if I were to revise it, I would use a larger SMT resistor than the 0402 size. The board will be controlled via I2C from a PIC microcontroller, initially for the pressure sensor and later for other projects. text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/gps?rev=1415904614&do=diff GPS Haicom HI-406BT 19200bps, 8N1 Serial Data PinWireDescription Blue3Vpk-pk serial data Orange3.3V Green3.3V Red0V Referenced to Ground Haicom website * [HI-406BT Manual] GPS Receiver Modules * Lowrance LGC-12S - [Owner's manual] * Earthmate Hyperformance GPS Receiver - Rockwell binary output only text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/tirepressuresensor?rev=1415904614&do=diff Tire Pressure Sensor The pressure is determined by the formula, <m>P=0.145* Parts Part# Description Source Cost MPX5700DP-ND0-101.5PSI Pressure sensorDigikey$16 2 Ft 1/4ID hoseHome Hardware$1.50 2 crimp style hose clampsHome Hardware$1.60 text/html 2016-03-09T03:23:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/3d/openscad/start?rev=1457493795&do=diff OpenSCAD Endcap Endcap for a clear plexiglass tube to hold an LCD display module <HTML><BR CLEAR=“ALL” /></HTML> Drive Pulley Pulley for a drive belt for a Kodak Slide projector <HTML><BR CLEAR=“ALL” /></HTML> text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/405nmlaser?rev=1415904614&do=diff 405nm Laser Diode Blue, Violet, almost Ultraviolet really. I made a driver board and just need to finish the heatsink and mount it in a case. I bought a translucent blue project box from Hammond that I'll be mounting the laser in. * 405nm (Blue) Laser text/html 2014-11-13T21:23:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics?rev=1415913830&do=diff My Electronic Projects ~~PAGEINDEX=:projects:electronics~~ (Automatically generated list) Suppliers 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 text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/ulaser?rev=1415904614&do=diff U doped Laser Excited-State Absorption in Fluorescent Uranium, Erbium, and Copper-Tin Glasses PREPARATION AND PROPERTIES OF POTENTIAL GREEN LASER MATERIALS CONTAINING EXAVALENT URANIUM Fluorescence Spectra of Uranyl Ion in Various Environments Heavy-element chemistry at Los Alamos Factors affecting the threshold for laser action in CaF2 crystals doped with uranium and other host lattices - No access Uranium-doped calcium fluoride as a laser material - No access Q-Switching Spectral Bleac… text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/cardreader?rev=1415904614&do=diff Magtek Card reader MAGTEK 21045002 MagStripe card reader. [Datasheet] Single Track, only reads Track 2 2.7 to 5.5VDC When no card is present all pins are high. When a card is present pin 5 goes low and remains that way for 140ms after the entire card has been read. text/html 2014-11-13T22:12:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/dualpressuresensor?rev=1415916744&do=diff Barometric Pressure sensor Dual pressure sensor board [PIC18F1320 Datasheet] RX on pin 3 TX on pin 2 Power ON 98.97 kPa, 742.3 Torr ; 0814,0521 98.97 kPa, 742.3 Torr ; 0814,0521 98.97 kPa, 742.3 Torr ; 0814,0521 Reference Barometer - MPXAZ4115A text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/ioboard?rev=1415904614&do=diff IO Board 16 Bit Digital input, 16 Bit Digital Output. Outputs 16 Relays Inputs [HP3700] 16 socketed Optoisolators, rated for 5 to 240 Volts, AC or DC. Pinout Relay boardSignal NamePin#PinSignal NameGndGround B1 #A1 -I/O CH CKI/O channel check; active low=parity error text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/protoboard?rev=1415904614&do=diff Prototyping breadboard idea * Polyswitch * 12V * 5V * 3.3V * Serial level converter * Reset switch * ICSP port text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/relayboard?rev=1415904614&do=diff Relay board SPDT JW1FEN relays from an old UPS. Matches closest to Digikey Part# 255-1114-ND [JW Relay datasheet] [Schematic] [Board layout] <HTML><BR CLEAR=“ALL”></HTML> OptoRelay Board G4PB16 - G4 16-channel I/O Module Rack * G4 ODC5 - G4 DC Output 5-60 VDC, 5 VDC Logic * G4 OAC5 - G4 AC Output 12-140 VAC, 5 VDC Logic text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/serialconverter?rev=1415904614&do=diff Serial Converter MAX233CPP * Uses no external caps Cable Pinout Pin Wire Colour Description 1 N/C 2 Black RD (Data to PC) 3 Brown TD (Data from PC) 4 N/C 5 Red Ground 6 Orange DSR 7 Yellow RTS 8 Green CTS 9 N/C S Shield text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/electronics/usbserial?rev=1415904614&do=diff USB Serial Adapter FTDI FT232RL Digikey Part# 604-00043-ND Prolific USB Serial Adapter Drivers: <http://www.prolific.com.tw/eng/downloads.asp?ID=31>, [Local copy] 3.3V Logic WireFunctionYellowDCDBrownGroundOrangeRX (To ComputerPurpleRTSRedTX (From computer)BlueCTSGreenRI??GreyDTR Reference * [PL-2303 Datasheet] * [PL-2303 Product guide]