Just4Fun's Postbag

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Just4Fun
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Just4Fun's Postbag

Post by Just4Fun » Sun Feb 12, 2017 7:07 pm

Hi all,
it seems I've missed a new forum section... :mrgreen:

So here are my two cents:

Mini thermal printer:
F1.jpg
F1.jpg (81.27 KiB) Viewed 963 times
payed 17$ from here: https://www.aliexpress.com/item/JP-QR20 ... 70343.html
but in the meanwhile seller added 2$ more...

It seems that there are 3 differet HW versions. This one works at about 7V@1.5A and has RS232 and TTL (3.3V) serial connector. It works also at 5V, but with 7V the print quality is definitely better...

and a 6" e-ink display (without controller):
F2.jpg
F2.jpg (78.84 KiB) Viewed 963 times
payed about 12$ here: https://www.aliexpress.com/item/Free-sh ... 62860.html
but now the same seller wants 50$!!! :shock:

Anywhere it can be found from others sellers for about 13$...

Now I have to find a connector... :| (and the time to study how to use it...)

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BennehBoy
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Re: Just4Fun's Postbag

Post by BennehBoy » Sun Feb 12, 2017 7:26 pm

E-ink screens could come in quite useful for relatively static information... I've a few broken kindle's kicking about that I could canibalise :D
-------------------------------------
https://github.com/BennehBoy

zmemw16
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Re: Just4Fun's Postbag

Post by zmemw16 » Sun Feb 12, 2017 8:15 pm

BennehBoy wrote
E-ink screens could come in quite useful for relatively static information... I've a few broken kindle's kicking about that I could canibalise :D

1st i sat on it - cracked screen as a result. that was 2011
replacement for that one - packed too much on top and tightened bike bag strap - cracked screen, also 2011
the third one died before xmas, power switch i suspect - i now have a spare screen, nothing to move it to.

now i'm using a voyager and a next gen kindle, interface took me awhile to adapt to, now i quite like it

stephen

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RogerClark
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Re: Just4Fun's Postbag

Post by RogerClark » Sun Feb 12, 2017 10:08 pm

That screen looks really interesting, shame its not on a pcb

Adafruit used to sell one for $40, but it looks like its discontinued

https://www.adafruit.com/products/1346

I womder what people would pay for the same screen on a pcb, perhaps $15 or $20 ?

Of course we'd all like it for $5 or less, but I guess the cost of the raw screen isnt that cheap

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RogerClark
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Re: Just4Fun's Postbag

Post by RogerClark » Sun Feb 12, 2017 10:10 pm

Yikes.

I just noticed the new price.

Thats crazy. no one is going to pay $50 for that when the adafruit one was only $40

edit

found this one for $14

https://www.aliexpress.com/item/Free-Sh ... 68bfd4e771

Edit 2.

Looks like it could be hard to drive that display, it may need high voltage drivers (40V) according to this spec


https://developer.mbed.org/media/upload ... 1-rd02.pdf

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RogerClark
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Re: Just4Fun's Postbag

Post by RogerClark » Mon Feb 13, 2017 2:14 am

IN case its any use with the e-ink display, I found this

https://github.com/PetteriAimonen/ED060SC4_driver

It includes schematic for generation of the negative and positive voltages and also includes a STM32L4

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Just4Fun
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Re: Just4Fun's Postbag

Post by Just4Fun » Tue Feb 14, 2017 11:12 am

Thanks Roger,
here is an other datasheet (ED060SC4 v.2): http://essentialscrap.com/eink/ED060SC4V2.pdf

I am not sure is the LB060S01 is exactly the same.

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RogerClark
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Re: Just4Fun's Postbag

Post by RogerClark » Tue Feb 14, 2017 8:32 pm

Just4Fun wrote:Thanks Roger,
here is an other datasheet (ED060SC4 v.2): http://essentialscrap.com/eink/ED060SC4V2.pdf

I am not sure is the LB060S01 is exactly the same.
None of the data sheets seem to have the software interface to the screen, they just seem to contain the electrical connections and timings.

There must be a programming data sheet for them.

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Squonk42
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Re: Just4Fun's Postbag

Post by Squonk42 » Wed Feb 15, 2017 6:16 am

I found this:
http://essentialscrap.com/eink/

EDIT: It is not obvious, but the titles on this page are actually links to other pages on the same website and contain a lot of information. Plus, this is for STM32 :)

EDIT2: At the bottom of these pages, you can easily miss the "comments" section. This CSS is really bad.
Last edited by Squonk42 on Wed Feb 15, 2017 6:41 am, edited 1 time in total.

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RogerClark
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Re: Just4Fun's Postbag

Post by RogerClark » Wed Feb 15, 2017 6:26 am

So. It looks like this is a link to the programming manual for the display

http://essentialscrap.com/eink/S1D13521B01_Spec.pdf




BTW.
The github repo I found was also STM32

https://github.com/PetteriAimonen/ED060SC4_driver

(Albeit STM32L4)

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