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Forum Index : Microcontroller and PC projects : Home-made single-side Maximite Board

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Sumit

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Joined: 13/09/2011
Location:
Posts: 23
Posted: 04:02pm 22 Sep 2011
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Here is my first attempt to a home-made single sided maximite board using the quick 'n' easy toner transfer method. It has some vias as expected but I think that is OK for a home-made design. It was built in under 2 hours including soldering and firing up the MMBASIC. It did not boot for the first time because I used capacitor "C5" as electrolytic. ITS VERY IMPORTANT TO USE A TANTALUM CAPACITOR FOR C5. Everything works as good as it was meant to be. Here are some pictures....










1.Back Side
2.Front Side
3.Front Side with PIC32
4.PIC32 adapter for easy replacement and soldering.

Images may seem bad due to reflections.Edited by Sumit 2011-09-24
 
Geoffg

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Joined: 06/06/2011
Location: Australia
Posts: 3194
Posted: 09:38pm 22 Sep 2011
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Wow, that is amazing.

Did you make the carrier board for the PIC32? The tracks need to be very close together which is difficult on a handmade board.

Also, what is the silver thing on the underside of the board? A shield? Bluetooth?

Geoff
Geoff Graham - http://geoffg.net
 
elproducts

Senior Member

Joined: 19/06/2011
Location: United States
Posts: 282
Posted: 10:16pm 22 Sep 2011
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I think that's the SD card socket.
www.elproducts.com
 
Bryan1

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Joined: 22/02/2006
Location: Australia
Posts: 1344
Posted: 10:29pm 22 Sep 2011
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Wow that does look great for a homemade board WELL DONE, I did have a go at making my own on a kiwacan tqfp board but I couldn't get mplab to see the board and yes I did use an electro for C5. I do have some tantalums now so I might have to have another go at it.

Cheers Bryan
 
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5078
Posted: 11:02pm 22 Sep 2011
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Yeah I agree, very good work Sumit.

Glenn
The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ
 
sparkey

Senior Member

Joined: 15/06/2011
Location: Australia
Posts: 819
Posted: 11:44pm 22 Sep 2011
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i argree with others ..where did you get the cct board that holds the pic and have yo made full use of all the pins that are actully avaliable from the chip point of veiw
technicians do it with least resistance
 
Ray B
Senior Member

Joined: 16/02/2007
Location: Australia
Posts: 219
Posted: 12:53am 23 Sep 2011
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Sumit, don't worry about the vias you did this on single sided board.

What PCB design program did you use ?
I'm just getting into Eagle and my first project is a MaxiMite I/O board extending all of the 26 pin connector out onto the board then have some I/O circuitry like MAX232, LCD connector etc. Something to replace what I currently have working on protoboard.

One challange I have is using on a single sided board (my home brew choice) restricted by the free version of Eagle to a 80 x 100 mm board to have most of the 26 I/O connector pins traversing the board to an "exit" 26 I/O connector so I could in theory daisy chain boards. This will result in a lot of vias.
Another option would be to have vertical daughter boards for the plug in options.

When I have something usable I'll publish the source files on this forum to encourage others.
RayB from Perth WA
 
Sumit

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Joined: 13/09/2011
Location:
Posts: 23
Posted: 01:47am 23 Sep 2011
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Thanks to everybody for the appreciation !!

I made the PIC32 adapter board using EAGLE version 5. I had to make my own device library because EAGLE does not have a PIC32 device library by default. For that, I had to edit the TQFP64 libraries from other devices eg. LPC2148 from NXP, that has the same package. It took some time but the effort is worth it. This enables me to re-design the main board without much effort since I already have the PIC32 "adapters" easily made.
 
haiqu

Senior Member

Joined: 30/07/2011
Location: Australia
Posts: 152
Posted: 03:55am 23 Sep 2011
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I just have to marvel at that, Sumit. Quite an achievement indeed.

Rob
unzip, strip, touch, finger, grep, mount, fsck, more, yes, fsck, fsck, fsck, umount, sleep
 
Dave Everett
Regular Member

Joined: 24/06/2011
Location: Australia
Posts: 43
Posted: 03:57am 23 Sep 2011
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  Sumit said   Here is my first attempt to a home-made single sided maximite board using the quick 'n' easy toner transfer method.


That's great work mate.

While I have played with the toner method in the past, I find it too wasteful of toner. I use a photo etch process now and I have found my UV box works great with paper artwork, much better than acetate that I used to use.

I regularly do 8mil traces and 8 mil gaps and always get perfect boards.

Dave Everett
 
jman

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Joined: 12/06/2011
Location: New Zealand
Posts: 711
Posted: 06:04am 23 Sep 2011
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Hi Sumit

Well done with the homemade PCB
I have used the same method with good success


Regards

John

 
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