Gallery, Projects and General > Project Logs |
UV LED Exposure Unit |
<< < (2/3) > >> |
BigBore:
That's pretty slick! I like it. :thumbup: Ed |
Stilldrillin:
Gotcher! ........ Now....... ::) That`s a bit clever, innit? :thumbup: I only understand things that rotate & move about a bit..... Thanks Chris! David D |
raynerd:
Well that is more than I understand !! Second attempt just now... certainly not perfect but I think I need to improve the contrast of my artwork for that but I think this would be useable! |
Brass_Machine:
That's pretty neat Chris. The video I saw on doing photosensitive boards... the guy printed 2 of the particular board he was doing and lined them up one on top of another to help make sure everything that's supposed to be black, was. look for my link to the video. It may help you a bit. Eric |
raynerd:
Eric, thanks for the reply. I didn`t see this until now when I have just come to update and that method would work really well. A much better idea than going over with a fine sharpy like I am currently doing. I know some people put it through the printer twice however when I try that it moves a fraction and just looks aweful! I will try that next time for sure... I watched the video and it was very helpful but that little tip imparticular was good. I had an interesting evening last night. I gave this another go but using my own art work for a simple binary dice that I designed a few months ago when I was just getting to grips with EasyPIC6, Microcontrollers and Mikro C. It is only simple, you press a button and it gives you a 'random' number between 1 to 6, displaying it in binary. It also has a simple circuit so with little effort I could make it on a one sided PCB layer with no jumpers. I really need to learn how to use the polygon tool to make a ground mask but I couldn`t get it to work and was despirate to give the pcb making process a try...another 'something' for next time. This was the design. I`m sure it could be a better layout. I started off during the last week learning how to use CADsofts EAGLE but I found it a real PITA. I must have clearly been using it incorrectly but I found the schematic layout fine but actual laying traces seemed so rigid, I just couldn`t get it to do what I wanted it to! I then tried the free version of Proteus, - Proteus Lite and it was excellent. It only took me a few hours and I had nearly designed my board: I then printed it off, exposed my copper board it for 3 minutes in my UV box, developed for 1 minute and started etching: Then to the part I had feared. I actually thought I was going to leave it there as I didn`t have a drill that could run at 5000rpm or great. I came across this which had been given to me at a shop clearance, it came in a little box with tiny drill bits and I knew the guy who owned it made pcb’s as he had a UV exposure unit (didn`t know what that was at the time!). It says 10.5v on the front so I plugged it in DC 10v and expected it to fly around – it went quite slow, relative to what I was expecting and certainly not 5k RPM!! Anyway, I couldn`t go any further as I had no drill stand, then I realized it was small enough to clamp in my milling machine. With little effort a 0.8mm drill bit went straight though and was very accurate. I experienced no snapped drill bits or wandering holes. The only issue was that the drill had very very little torque and consequently grabbed twice and got stuck so I had to twist it off. Here is the board with components soldered. You don`t get a peak at the back side now as my soldering has a little to be desired! It got late when I had finished and need to re-programme the PIC with the correct port for the button and then should give it a test. I may have done something wrong on the board design but the concept of making a PCB at home has worked! Next time I need stronger tracks but as I mentioned above, I think doubling up the artwork transparency will help a great deal as there are currently clear areas of the track that are not sharp enough. Practice I guess.. Chris |
Navigation |
Message Index |
Next page |
Previous page |