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Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
@ lpfthings
have you ever tried controlled wood burning with High Voltage? - it creates very fine detail, and the pen is not as heavy as a soldering iron - even if you only did that on accident, I thought you might find it interesting
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
hydraliskdragon wrote ...
Hey DaJJHman, what type of camera are you using to capture those water droplet photo's?
Casio EX-FH20 in the 40 FPS mode - I have been successful using a film camera, a canon AE-1, and a homemade flash setup but I wanted instant results in this case...
the Key to such photos is not so much the camera as it is the setup of the scene - placement of two different colors, proper and even lighting, proper dropping of the drop (I have made several that were not strait!), and stillness of the water...
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
I decided to make a circuit board for my segments I got. Sadly, Seeing these are from goldmine, They never said it was ++ input, and the segments are -. This makes it hard because usually, I put a microcontroller ports (+) to each segment. Then I use transistors to turn on/off each segments ground pin. Sadly, these are flipped. I have to use Transistors to change the 7 segments, and use ports to change what one lights up.
This was my first double sided PVC. I created the board from scratch in eagles, Printed to high gloss photopaper, Matched it by holding a light behind it, Taped then stapled it together. Then I slipped a copper clad into the pouch I made (taped 3 sides of the design) and Iron it. I put my Iron to linen, Pushed down hard for 30 secs, light tip rubbing, 30..tip..30..tip..30..30..and flipped. It came out flawless, So much ironing that it was a mess! The holes were less than 1/8 of a mm off because the staples I put to hold the board, caused the design to miss-match :'( But hey, still lines up, still works! Pictures! I don't make boards often, I understand if this isn't the compact way to do it :(
Thats going to take a lot of outputs from your microcontroller, have you considered using multiple shift registers? Im currently driving three 7 segments using only 3 outputs from my PIC thanks to them.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
Killa-X wrote ...
I decided to make a circuit board for my segments I got. Sadly, Seeing these are from goldmine, They never said it was ++ input, and the segments are -. This makes it hard because usually, I put a microcontroller ports (+) to each segment. Then I use transistors to turn on/off each segments ground pin. Sadly, these are flipped. I have to use Transistors to change the 7 segments, and use ports to change what one lights up.
This was my first double sided PVC. I created the board from scratch in eagles, Printed to high gloss photopaper, Matched it by holding a light behind it, Taped then stapled it together. Then I slipped a copper clad into the pouch I made (taped 3 sides of the design) and Iron it. I put my Iron to linen, Pushed down hard for 30 secs, light tip rubbing, 30..tip..30..tip..30..30..and flipped. It came out flawless, So much ironing that it was a mess! The holes were less than 1/8 of a mm off because the staples I put to hold the board, caused the design to miss-match :'( But hey, still lines up, still works! Pictures! I don't make boards often, I understand if this isn't the compact way to do it :(
-Flash Shows under layer.
I have an I/O Expansion Board from a Dual Core Arduino Beta Testing Project - it has two output resisters, and two for input - registers are in place, it just needs a few support components like caps and, optionally, a resistor network - I'll send it to you if you want, as I don't think I will be using it any time soon the registers are as follows: 2x MC74HC595AN and 2x CD4021BE
there are 15 pages in that thread, and I don't have time to sift through at the moment, but the expansion board design should be within the first few pages IIRC
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
big5824 wrote ...
Thats going to take a lot of outputs from your microcontroller, have you considered using multiple shift registers? Im currently driving three 7 segments using only 3 outputs from my PIC thanks to them.
Usually Even when I use to run 8 segments, I connected all 7 led inputs together and used transistors to tell which one to light. So it would be like telling them to all be 8, light 1. all be 5, light 2. etc but at a high speed...But I do have over 32 outputs total so
DaJJHman, Not sure if boards made for that programmer will be the same as me using AVR chips.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042
Killa-X wrote ...
big5824 wrote ...
Thats going to take a lot of outputs from your microcontroller, have you considered using multiple shift registers? Im currently driving three 7 segments using only 3 outputs from my PIC thanks to them.
Usually Even when I use to run 8 segments, I connected all 7 led inputs together and used transistors to tell which one to light. So it would be like telling them to all be 8, light 1. all be 5, light 2. etc but at a high speed...But I do have over 32 outputs total so
DaJJHman, Not sure if boards made for that programmer will be the same as me using AVR chips.
it's not a programmer, it is an I/O expansion board for microcontrollers based off of Shift Registers - it just takes one of your PIC/AVR/whatever outputs and expands it to as if you had extra addressable outputs...
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