Meopta Axomat3 enlarger. +diy rgb led head (esp8266) + FADU F-stop Enlarger Timer App

[@pr395]

Really Cool project! Thanks for sharing. I just got an enlarger myself and was wondering: Is there any benefit of using LED other than the 12V portability ? Do you use the colours anytime ? As mine didn’t come with a timer controller I was wondering going the same path with a Relay Thanks!

[@RuslanIsubilov]

Thank you! Fadu app is really convenient application at least due test strip mode. I gave up from using other timers from moment I started use this app. The easiest way is adopt sonff wifi smart soccet or use wi-fi relay with arduino like base( esp-01). And use it like a regular timer with original enlarger lamp (example video - kzbin.info/www/bejne/aGe0nZuPg9SopMU) . But on current video I used led matrix with esp8266 board. It has one onedrawback - the blue spectral has pick at 460nm. And it's impossible to achieve maximum contrast on multigrade papers. I've solved this problem at next version of head. It uses COB LED with different spectrs .Here small note on russian about it with links to components: zen.yandex.ru/media/id/5d108abc9b067b00ae2ffa18/rgb-golova-ver-20-dlia-splitgreid-pechati-5eb32f73edf71008373a6f80 . But I changed LED layout for more uniform illumination, than I descibed in this note. And now I'm happy for this version and yes I use all 3 collors. green for soft contrast , blue for addinf strong contrast (on MG paperes) and red for paper positioning. Elso I tried color printig on led matrix version :) Any of described adoptions requires some basic electronics knowledge. Here you can find original manual: github.com/filmanddarkroom/FADU_Timer/tree/master/documentation Feel free to ask any questions.

[@pr395]

@@RuslanIsubilov Thank you so much for writing such a detailed answer Ruslan! Now I understand better and think It fits my needs perfectly. I have some electronics background myself (assembled an eBike recently and made my own battery and spot welder). Definitely will come back with more questions once I go through the links you've sent!! Have a great week.

[@pr395]

BTW do you have any info on using this for color print ? I saw you mention it once in your links and was wondering how good it is :) a video or pictures would be great

[@RuslanIsubilov]

Just saw your question. I tried it in color printing. Even made special mode for it, becose it needed mach more light in red. I think peak of paper sensitivity is on different wavelength than red in led matrix. And elso it can be different for other brends. I used old mitshubishi paper. But in overal - it usable. But I gave up on color printing due in routine color matching on photo.

[@mitchreyes6408]

Hey Ruslan! How did you connect the sonoff to your phone or the led head?

[@RuslanIsubilov]

Hi. Page of fadu timer project - www.film-and-darkroom-user.org.uk/forum/showthread.php?t=12132 . in this page zen.yandex.ru/media/id/5d108abc9b067b00ae2ffa18/komponenty-i-sborka-svetovogo-modulia-dlia-fotouvelichitelia-5d95cb02f557d000ae817be6 I described what I used in my modification. On russian, but I hope google.translate helps. If you have any futher questions,please ask, will be glad to help.

[@narenume]

Привет, пытаюсь воспроизвести твое устройство, но прошивка которая лежит на гитхабе не рабочая, вместо подключения к сети она создает точку доступа.Можешь пояснить что нужно исправить чтобы все заработало?

[@RuslanIsubilov]

Привет. моя прошивка? Оно, на сколько помню, создает точку доступа (в этот момент мигает). К ней надо подключится и настроить подключение к общей сети(домашний вайфай). После ввода учетных данных, оно должно перезапуститься и подключатся уже к файфай, при этом пока мигает к ней не надо подключаться или подключиться и использовать напрямую.. Но блин я так давно увеличитель даже в руки не брал, что точно и не помню. upd: ну и в описании видео оригинальный гитхаб Боба. Я под себя правил и на видео как раз правленая версия, github.com/rusuranu/fadu-timer-fork . Если еще будут вопросы, пиши в телегу в указанном канале в описании к видео, есть контакт - повспоминаю.

[@narenume]

@@RuslanIsubilov Огромное спасибо, все заработало! Теперь осталось корпус склеить и пробовать печатать.