The Aussie Pinball Arcade
Aussie Pinball Forums => Archived Threads => Homepin => Topic started by: Homepin on September 13, 2012, 09:23:33 PM
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At Pinfest 2012 I was asked by several people about the possibility of re-making Hankin pinball boards. I had given some thought to this previously but dismissed the idea as I didn't think there would be enough interest or need for them. Seems I was wrong (how surprising <.>) so we have started with the MPU and will continue with both the driver and sound boards after we have the MPU running.
I have to say after meeting David Hankin and basically receiving his blessing to make these boards it would be un-Australian for me NOT to make them %.%
A reminder pic of David and myself discussing this very idea:
(http://www.homepin.com/test/davidmike2.jpg)
and a teaser screenshot of the basic board layout that we have started. We have decided to ditch the 5101 RAM mainly because the sockets are VERY hard to come by and a 6116 RAM is easy to get, cheap to buy and uses a standard 24 pin socket.
(http://www.homepin.com/test/early.jpg)
This is going to be a VERY limited run there is no doubt, so anyone interested might want to keep a close watch on this project and perhaps even express their interest? If you have any ideas for improvement to this board please speak up now while we are in the early stages.
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No mucking around, Mike - Great to see this opportunity arise *%*
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C'mon....jam it all inside an FPGA chip ;-)
MM
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A little 'parts placement' progress
(http://www.homepin.com/test/early1.jpg)
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Niño said it, no mucking around, great work mate
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Onya Mike ^^^
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A little progress - header pins added and some IC pads changed to oval shape to add more copper to the finished pads for additional strength. Still a very long way to go but at least it starts to actually 'look' like something when all the parts are placed.
(http://www.homepin.com/test/early2.jpg)
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I have decided to 'go the whole hog' on this project and today I designed up a new heatsink for the 7805 regulator used on this and the driver board. I ordered it in gold anodised the same as the Bally rectifier board heatsinks - should look pretty flash IMO.
First picture is a scan of the supplier factories catalog - it is one of their many stock profiles:
(http://www.homepin.com/test/cat1.jpg)
This is my drawing to them specifying details and tapped holes - minimum order is 1000pcs so expect to see these pop up in other projects of mine %.%
As you can see there is an awful lot more work to re-creating these boards than many might realise......
(http://www.homepin.com/test/heatsink1.jpg)
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Is there enough demand for these Hankin boards Mike to justify all your hard work and time, or is it a matter of developing a working proto-type and a few brand new boards to start off with, then produce on demand ? Is tht the way you are approaching it ?
P.S - I take my hat off to you because you are extremely talented to be able to design and engineer all these boards, not to mention find and locate all the hardware, do the CAD drawings and then work out all the nuts n bolts. That takes patience and talent which you have in spades. Well done mate.
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Is there enough demand for these Hankin boards Mike to justify all your hard work and time, or is it a matter of developing a working proto-type and a few brand new boards to start off with, then produce on demand ? Is tht the way you are approaching it ?
P.S - I take my hat off to you because you are extremely talented to be able to design and engineer all these boards, not to mention find and locate all the hardware, do the CAD drawings and then work out all the nuts n bolts. That takes patience and talent which you have in spades. Well done mate.
I intend to get them working them make an initial batch of - - - maybe 10 finished boards. After that I will probably assemble them in small runs of 5 boards at a time as required. There are quantity issues, no matter which way I crunch the numbers it just isn't worth ordering less than 100 blank PCBs from the factory as the price goes through the roof for, say, 20 boards.
Same applies to practically everything else like the heatsinks etc etc. I actually know someone in Cairns with a Hankin and they asked me to repair it about 12 years ago - MPU was stuffed so I said "can't help you" - I am guessing there are a lot of Hankins sitting in garage corners with no love.
Might be a good time to snap them up at a good price - %.%
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Almost all the parts are placed now. You can see the newly created 'footprint' for the new heatsink on the bottom left and the input conditioning resistors in place along the right edge - just some caps to go here and we are almost there and ready to start laying tracks. For those who may not have seen an original Hankin MPU I have included a pic for comparison.
(http://www.homepin.com/test/early3.jpg)
(http://www.homepin.com/test/hankinmpu.jpg)
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OK - I love it when the tracks start going down, it starts to actually 'look' like something not just a bunch of bits.
The layout and re-design of this (and some other) Homepin boards is the result of the collective efforts of more than just me. We are a close team and some of the team like to remain in the background. These projects could never be made if it were all down to one person - there simply isn't enough hours in the day. I have been very fortunate to pull together a group of very talented electronic professionals who also happen to like pinball #*#
Here you can see the crystal in place (top left) - the CR2032 battery holder (bottom middle) - input conditioning caps down the right hand side and numerous (mainly power) tracks (thicker than signal lines). We will probably add a spot for a supercap later as there is plenty of space and it is very little extra work.
Green signifies copper on the top (parts) side of the board and red is the bottom copper.
(http://www.homepin.com/test/early4.jpg)
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What a talent you have just awesome there must be some Hankin owners out there dribbling? Also Mike what else did D Hankin say at pinfest about the pinball making days where they easy to sell? and so on I'd love to hear some storys.
Peter
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What a talent you have just awesome there must be some Hankin owners out there dribbling? Also Mike what else did D Hankin say at pinfest about the pinball making days where they easy to sell? and so on I'd love to hear some storys.
Peter
I only had about 5 mins with David and we spoke mainly about the boards I was re-creating (across the range) and that I would likely be re-making Hankin boards "if that was OK with him" - to which he replied "that would be great".
Then Bruce (AMD) dragged him away to the bar.... %.%
I'm pretty confident I will have a couple of the Hankin boards finished in time for Pinfest next year and I hope David pops in again. I will get more time with him then I am sure after I have proven that I can do the job. If he doesn't drop in I will try and have a private meeting with him.
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Nice work again Mike ^^^
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A bit more progress showing a tidying up of the supply rails. I have also asked the board house if they are able toi include the correct Hankin logo on the finished board for me as modern PCB programs don't 'easily' allow for fancy fonts - in the 'olden days' it didn't matter as boards were silk screened so you could use any graphic. These days of CAD aren't quite so good.
(http://www.homepin.com/test/early5.jpg)
(http://www.homepin.com/test/NAMELOGO.jpg)
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Maybe a bit of font vectorising for you Mike?
Welcome to my world... just done CAPT FANTASTIC for cab stencils and no two letters are the same due to the hand drawing done back then, so no shortcuts permitted
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I like it when a plan starts to come together - tracks being laid down - now we are moving close to having a board....still needs a LOT of tweaking and legends but not too shabby all the same.
(http://www.homepin.com/test/early6.jpg)
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brilliant work as usual ^^^
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Hey Mike Im no tech but its looking good How is things back at home in the rain forest
I didnt tell David my Ap Name Maybe I should of :lol Howzat
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Not much to comment on here - just some more connections going down.
(http://www.homepin.com/test/early7.jpg)
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Getting there.................................
(http://www.homepin.com/test/early9.jpg)
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(http://www.homepin.com/test/early10.jpg)
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This is an Awsome thing your doing mike keep up the great work. Sadly all my empire strikes back boards are working and in great condition but u never know when something will fail and cook a board
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Getting close now - adding the finishing touches and confirming a few things that are different between the actual board and the schematic.
(http://www.homepin.com/test/early11.jpg)
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Still waiting on a couple of caps to finish this and test it but almost there now
(http://www.homepin.com/pics/first_hankin_mpu.jpg)
Old next to a brand new one
(http://www.homepin.com/pics/o_n_hankinn.jpg)
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magic ^^^
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Great work, Mike !
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Good one Mike ^^^
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Fantastic
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Well the couple of missing caps finally showed and I was able to crank up this new board. I was a little unsure about the correct jumpers to use for 2716 but after sorting that out the board fired right up on the bench $#$
Changes:
Nice gold heatsink with better thermal properties
Addition of a 10A plug and socket for 12V connection (bottom left - green) Doesn't have to be used but improves reliability if you do.
Replacement of the memory ni-cad with a CR2032 or provision for supercap
Addition of an 'on board' test switch for entering test mode (center right)
Many legends with almost all parts marked on the board with their value as well as part number.
Replacement of IC4 - the 5101 RAM with a more common 6116 - (much cheaper and easier to get)
Use of Genuine, 100% original NOS Hankin masked ROM for IC2
I am waiting on a friend to loan me his (non working) Hankin Empire Strikes Back machine so I can run it up in the game before putting them up for sale.
(http://www.homepin.com/pics/hankmpuready.jpg)
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Been following this thread with much interest *%*
Awesome work Mike ^^^ ^^^
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Congrats Mike .. great work ^^^
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this is great work !!!!!!!!!!!
v
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where are all the leds that r****n dog put on their boards near the test points that really serve no purpose? !@#
Where are all the custom SMD I.C.s that you cant buy that p**led put on their boards? !@#
Why are all the traces so thick? !@#
Why do you have Machined I.C. sockets fitted to the main I.C.s ? do you expect us to replace components instead of buying a whole new board if something in our machine causes one of these components to fail? !@#
%.% %.% %.% %.% %.% %.% %.%
Well done Mike. I have repaired an after market pinball board made by every modern company except for home pin !@# i really can't understand why? :tumble:
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I have repaired an after market pinball board made by every modern company except for home pin !@# i really can't understand why?
The answer is very simple - all of the replacement board companies are businesses out to make maximum profit - there is nothing wrong with that BUT it means they cut corners and use switching power supplies and surface mount parts because they can assemble their boards by machine.
All well and good BUT they don't produce a product that will last or can be repaired easily, if at all!
All Homepin boards are hand assembled by qualified electronics engineers who are ALSO pinball enthusiasts - it makes a BIG difference. Homepin is a hobby business and it is not the intention to maximise profits but to make replacement boards that will outlast the originals. There isn't a lot of point buying a replacement board if, when it gives trouble, you have to throw it away and buy another - madness!
Thank's for the vote of confidence in my work.