OT MK1 Love Thread

Elektron Gear Octatrack
#11

So I just used a device like this:

I pulled the ground pin from the header on the display and just wired this thing in there. There is an ISP header close to the display so I just tapped the 3.3V there

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#13

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#14

Hi! These voltage regulators is what I think i may be missing.
My screen illuminates but there are no graphics!
Is this what the technician you hired ended up putting in?
Do you reckon you could snap some shots (front and back) of the UI board please?

This is the screen I got, I think it might be the same as yours:

#15

@ alien_brain

What lcd module did you actually use (part number would be helpful)? Did you use step up converter only to Vdd only or to Vee too? How about contrast voltage? Many questions :smile: I know but would be great to know.

#16

@ matthismeyer

Did you manage to make it work? This is module is one of my candidates for the project.

#17

I managed, but had to delegate it to a competent electronician.
Had done it for my machinedrum but Octatrack was way more complicated as you need the step down voltage converter mentioned in this thread (got it on amazon)
It bugs out sometimes and the screen freezes but works fine after a restart.
I got the screen from Adafruit.

#18

*step up

#19

Thanks for the reply. Well replacement in MD is fairly easy indeed. Did you use step up only on Vdd?
I am asking as I am a bit confused about Vee 3.3 negative voltage used in the original module (pin 18). How about the contrast adjustment after your mod? Is it fixed or adjustable?

#20

It appears ET was sent home, he’ll be back in 999 years :sweat_smile:

Summary

02

This is one cool modification though. Probably works on many devices with screens like this. Got me wondering what screens could be replaced in my setup with some nice monochrome goodness :smiley:

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#21

you are right. seems like a dead end :slight_smile:

i did this one

and

and a few others

but these were fairly easy ones. essentially swaps.

i am thinking of upgrading A4 and OT with lcd negatives. oleds i guess would require a micro controller to “translate” the instructions, which is beyond my spare time capacity to learn.

1 Like
#22

The Yamaha looks awesome with that display. So crisp!

#23

it does indeed :slight_smile:

#24

Im afraid I can’t help any further… my skills are limited to soldering :slight_smile:

#25

I just finished a screen mod for my MK1. Much better experience compared to old one.

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58377688_396625617840142_3673062710213345280_n.jpg2048Ă—1286 287 KB

7 Likes
#26

Nice. i like red knob / crossfader too. Any tutorial for the screen? :slight_smile:
I’d like a red one too…

#27

Yep, especially the red knob. My muscle memory with the OT is still not there where it should be, so the level knob gets too often in the way when I want to operate the parameter encoders.

I’ll guess an other cap on it which feels differently whould help heavily.

(No, @sezare56, not the mouse trap thing. I like my fingers how they are :wink: )

1 Like
#28

Its a shame you went with red/blue as they dont harmonize well together.

#29

Highly recommended! A mouse ate one of my knobs!
00
I use that knob for LEVEL. A different texture / form is interesting too.

1 Like
#30

Anyone know if this would work as a upgrade/replacement screen?

#31

I don’t think so, it’s a non-trivial bit of soldering to do the screen replacement, someone did it in the past though Customising LCD display - #48 by selsiusx