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-   -   Midtone Machines film processor (http://www.rangefinderforum.com/forums/showthread.php?t=170159)

Larry Cloetta 12-05-2019 06:49

Midtone Machines film processor
 
Not sure if this has been posted before, but here is a (another) potential new film processor. Out of New Zealand from an aerospace engineer who apparently recognizes the primacy of good midtones, always a good sign.

As always, the odds are stacked against anyone developing, manufacturing, and marketing a viable and superior processor in todayís market, but this project seems better thought out than the Filmomat, to me at least.

Only posting in case someone might find it interesting, as he doesnít seem to have much exposure here.
There are internal links on the homepage which gives more information on the thinking behind the design.

One always hopes for the emergence of the better, and/or more affordable mousetrap.

http://midtonemachines.com/

CharlesDAMorgan 12-05-2019 06:53

Intriguing! I love things like this.

davidnewtonguitars 12-05-2019 07:22

Thanks for finding this Larry.

This guy is serious! My best to him, and subscribing.

Andrew Burns 12-07-2019 10:54

Hey all I'm the 'creator' of Midtone Machines, got word that there was a thread here talking about it so I made an account. Thanks for the interest! If you have any questions I'm happy to answer them in the thread.

Currently designing two PCB's to act as an interface between the arduino controlling the whole thing and all of my motors, sensors etc. I was considering soldiering on with the mess of wiring I currently have but eventually decided to not waste time and go to the design solution I intend to end up with, it will take more time in the short term but I'll end up ahead in the long term.

lynnb 12-07-2019 13:49

Hi Andrew, great to see this project. Hope all goes as smoothly!
Regards,

Andrew Burns 12-08-2019 15:13

New update on my website:
http://midtonemachines.com/news/pcb-design/

Nearly finished with the custom PCB design I'm going to use to replace the current rats-nest of wires and bring the machine closer to the final production version.

Larry Cloetta 12-08-2019 15:21

Thanks for the update, seems to be moving right along.

Keep up the good work.

shawn 12-08-2019 15:27

Looks great. Just a thought, on your breakout board make sure you have it on standoffs or some other way of raising it up. Don’t want an accidental leak submerging it.

Shawn

Andrew Burns 12-08-2019 22:06

Quote:

Originally Posted by shawn (Post 2928191)
Looks great. Just a thought, on your breakout board make sure you have it on standoffs or some other way of raising it up. Donít want an accidental leak submerging it.

Shawn

Yep it's going to be on standoffs, you're right I've thought about the possibility of leaks and so I'll be making sure that everything electronic that isn't fully sealed is well above the base plate. I might also look at some kind of splash cover for it in case there's a spraying leak (although I think that's less likely, the pipework will hardly deal with any pressure).

Andrew Burns 01-18-2020 22:48

New blog post is up, PCBs are finished and working fine, also put together a quick laser-cut MDF body shell for prototyping that IMO looks pretty good.

http://midtonemachines.com/news/fini...nd-dummy-body/

Larry Cloetta 01-19-2020 02:01

Thanks for the update.

Ambro51 01-21-2020 15:01

Anything viable to ease home processing contributes to a resurgence in film. Good Work.

Andrew Burns 01-26-2020 14:49

Another update, new custom PCBs are in and they've done a great job clearing up all the wiring mess, a much better solution for production. A few niggles with the pinch valves are holding me back a bit but I've still had the machine pumping water in and out of the developing tank with the agitation motor going. Again pretty close to being able to develop B&W film right now but I'd rather iron out all of the bugs before that.

http://midtonemachines.com/news/pcbs...-and-more-cad/

nbagno 01-26-2020 15:01

Throwing this out there as someone who has used a JOBO for a number of years. There will be water spilled on the machine, that's a guarantee. If you haven't already, consider a gasket around the LCD bezel and any other place spilled water can land on the machine. Jobo had a retrofit to add o-rings abound the control knobs. Cheers!

Andrew Burns 01-26-2020 17:04

Quote:

Originally Posted by nbagno (Post 2938293)
Throwing this out there as someone who has used a JOBO for a number of years. There will be water spilled on the machine, that's a guarantee. If you haven't already, consider a gasket around the LCD bezel and any other place spilled water can land on the machine. Jobo had a retrofit to add o-rings abound the control knobs. Cheers!


Fair point, a flat rubber gasket around the LCD and a little rubber boot over the joystick would probably be quite easy to implement and could save a lot of hassle if there's an accident. I've already spilled a fair bit of water into the machine itself so far during development so I know how likely it is...

Andrew Burns 02-01-2020 19:32

Just a short video update for today, showing the LCD screen and user interface that you'll use to operate the machine. Also the developing tank filling and draining with water while the agitation motor operates.

http://midtonemachines.com/news/short-video-update/

Andrew Burns 02-22-2020 12:39

Another update, new company logo, some new website banners, shout-outs to people who have been talking about my machine and some more progress:

http://midtonemachines.com/news/new-...-and-progress/

The machine is now fully capable of processing B&W film, frankly I'm starting to run out of things to do on it which means I'm going to have to turn my attention to more 'boring' things like working out how much they cost to make and marketing/selling them...

Andrew Burns 04-04-2020 17:11

New blog post up and new name for the machine, it's now officially the Chromabox-4


I'm struggling with my ancient 3D printer while in isolation so I'm looking for suggestions for when I'm able to shop online again, let me know if you have an idea of what printer I should get!


http://midtonemachines.com/…/pinch-valves-heaters-and-names/


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