https://www.photonicsguy.ca/ 2026-04-06T20:35:26+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/reference/flukemeter?rev=1415904614&do=diff Fluke 189/187/89-IV/87-IV Remote Interface Specification Archive of http://www.cfa.harvard.edu/~thunter/manuals/RemoteSpec89_18X.htm Retrieved October 2009 from Internet Archive, dated September 13th, 2006. Technical Note Fluke is providing this information to those few customers who would like this information. We give this information with the understanding that Fluke will not provide any additional support on this information. This means that our Product Support Service will not be able t… text/html 2017-11-12T18:33:58+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/archive/nslu2?rev=1510511638&do=diff Embedded Linux computer with 1-wire net Linksys NSLU2 running Debian Linux off of flash memory, polls a 1-wire net every 5 minutes and records the data (temperature and humidity) to a remote SQL server. 1-Wire PIC18 Microcontroller PIC18F4523 reading an ADT7410 temperature sensor via I2C. text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/wet610n?rev=1415904614&do=diff WET610N telnet <ip_address> 1111 system telnetd telnet <ip_address> root password: wlan Serial boot log 38400,8N1 3.3V logic U-Boot 1.1.4 (Jun 19 2008 - 14:02:55) U-Boot code: 00000000 -> 0001C1F0 BSS: -> 00021498 CPU Clock: 200 MHz 1.8V Vdd Output: 1.793 … text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/electronics/voip/dvg-1120?rev=1415904614&do=diff DVG-1120 9600 Baud, 8N1 Serial Port Pinout RJ9ColourFunctionPin1BlkGround2RedRX (Data to Computer)3Grn4Yel?ColourFunction-BlkRedTX (from computer)GrnRX (To Computer)YelGround Commands CommandFunctionspy 16 *Show Debug info for SIPnwdbg bridge off text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/dvr?rev=1415904614&do=diff MythTV DVR System Upgrade Hardware * Intel Celeron Dual Core E1200 CPU Allendale * Intel Desktop Board DG35EC * Product Guide * Integrated graphics with DVI out - Not used * Four Sata connectors * Gigabit Ethernet * 2x1024MB PC5400 RAM * Masscool Socket 775 CPU Cooling Fan * Cooler Master computer case * Nvidia 7300GT PCIexpress video card text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/arduino/udev?rev=1415904614&do=diff Making custom udev entries # udevadm info -a -p $(udevadm info -q path -n /dev/ttyUSB0)| grep ATTRS{serial} ATTRS{serial}=="A9KJB1T5" # create a file in /etc/udev/rules.d/ SUBSYSTEMS=="usb", ATTRS{serial}=="A9KJB1T5" , KERNEL=="ttyUSB?", SYMLINK+="sump", GROUP="dialout" text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/logger?rev=1415904614&do=diff Data Logging Software Perl program is on it's way, writing it now. LiveGraph - Excellent graphing software written in Java, I use it as a frontend. Perl Script Install sudo cpan -i Device::SerialPort sudo cpan -i DBI sudo cpan -i LWP::Simple sudo cpan -i Time::HiRes text/html 2023-12-11T15:47:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/esphome/vindriktning?rev=1702309669&do=diff Vindriktning Ikea air particulate sensor RX pin on ESP-01S header is pin 5 Serial testing Configure serial port: stty -F /dev/ttyUSB0 speed 9600 cs8 -parenb Value of 250µg/m³: echo -en '\x16\x11\x0b\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x00\x00\xb2' > /dev/ttyUSB0 text/html 2016-03-07T00:08:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/vintage/nextcube?rev=1457309293&do=diff NeXT Computer Model# N1000 Serial# AAK0000565 * [Memory error message] * [Boot message] * [Desktop] * [Nameplate] * Not shown - NeXT laser printer * Not shown - AUI to 10baseT Ethernet adapter 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/panelmeter?rev=1415904614&do=diff Panel Meter Interface Components * Panel Meter * [MCP41050] * [LM321] * [MAX5487 Digital Pot] * [12-bit DAC with SPI Interface] 1mA Full scale meter 94 Ohms coil resistance 5K Ohm resistor @ 5V = 1mA MCP4821 Pin No.SymbolFunction1VddSupply (2.7 to 5.5V)2CSChip Select3SCKSerial Clock Input4SDISerial Data Input 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] text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/notes?rev=1415904614&do=diff Notes APC Environmental card AP9512TH IC1LM35Temperature SensorIC2LM358NDual OpampIC3LM78LVreg, 5VBP1[TDK CHS-UGR]Humidity Sensor AP9612 IC1ADC08348-Bit Serial I/O A/D Converter with Multiplexer OptionIC2MM74HC14NHex inverting Schmitt triggerIC5P87C521 Controller PCF8574 - 8-Bit I/O Expander for I2C-Bus text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/arduino/lcd?rev=1415904614&do=diff LCD Display MJKDZ I2C board from eBay. Notes: * eBay search for board * * I2C address is actually 0x20, not 0x27 * I'm using the New LiquidCrystal library * Need pull-up resistors on SDA and SCL lines (A4 & A5 pins) Test Code #include <Wire.h> #include <LiquidCrystal_I2C.h> #define lcdAddr 0x20 // set the address of the I2C device the LCD is connected to // create an lcd instance with correct constructor for how the lcd is wired to the I2C chip LiquidCrystal_I2C lcd(lcdAddr, 4, … text/html 2016-12-11T20:47:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/projects/chip?rev=1481489238&do=diff C.H.I.P Computer Headless Setup * Connect CHIP to your Linux computer via USB * Run minicom -D /dev/ttyACM0 to connect to CHIP via a serial console * Login to chip, username: root, password: chip * Run nmtui, a console based wireless configuration tool 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/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