Photonicsguy.ca https://www.photonicsguy.ca/ 2026-04-06T20:34:48+00:00 Photonicsguy.ca https://www.photonicsguy.ca/ https://www.photonicsguy.ca/_media/wiki/dokuwiki.svg text/html 2016-03-09T02:48:00+00:00 Anonymous (anonymous@undisclosed.example.com) MySensor board 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 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) Ferrofluid https://www.photonicsguy.ca/projects/ferrofluid?rev=1415904614&do=diff Ferrofluid Followed the directions from here. View some pictures here, <html> <table style=“width:194px;”><tr><td align=“center” style=“height:194px;background:url(<http://picasaweb.google.com/f/img/transparent_album_background.gif>) no-repeat left”><a href=“<http://picasaweb.google.ca/photonicsguy/Ferrofluid#>”><img src=“<http://lh6.ggpht.com/_o8vuO8ku2Bo/R3CmoXghZGE/AAAAAAAADVI/zftZMUTQdNU/s160-c/Ferrofluid.jpg>” width=“160” height=“160 text/html 2014-11-13T18:50:14+00:00 Anonymous (anonymous@undisclosed.example.com) Transmission Holograms https://www.photonicsguy.ca/projects/holograms?rev=1415904614&do=diff Transmission Holograms Exposure Need <m>110 \mu Jcm^-2</m> on holographic plate. Measured <m>0.3 \mu Wcm^-2</m> with power meter. <m>{110 \mu Jcm^-2}/{0.3 \mu Wcm^-2}=367s=6 minutes</m> Assuming measurement error with power meter, shortening the exposure time, text/html 2014-11-13T22:37:16+00:00 Anonymous (anonymous@undisclosed.example.com) 7-segment display module 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.