Hi,
I just purchased a round eink display from here: https://www.aliexpress.us/item/3256805614938694.html?spm=a2g0o.order_list.order_list_main.4.53961802TqvRjk&gatewayAdapt=glo2usa
The seller does not have a datasheet and so far I am unable to find out much about the driving the display other then it is SPI and has what appears to be 23 pins based on the diagram from the seller.
I contacted eink but no response (yet)
Any help is appreciated
ET011TT2 Outline.pdf (86.6 KB)
https://www.panelook.com/ET011TT2_E%20Ink_1.1_EPD_overview_34916.html
No datasheet found.
Hi,
I have a response from EInk on the ET011TT2...the datasheets confidential, but they might provide if I bought the display from them. Problem is the display is no longer available for purchase and is discontinued...so catch 22.
I have looked at other boards that use EInk displays...such as Adafruit, but none are 23 pin.
I have sample code so do not need datasheet for the commands etc, but with a 23 pin connection be non-standard I really need a wiring diagram or a way I can look/probe at the pins to put together my own circuit. Has anyone done this before?
Any help is very much appreciated.
Thanks
Mark
Did they send a driver and/or a library?
You have the datasheet.
You have sample code.
You want help.
You won't share.
k.
EInk does not have anything and does not want to help me as far as I can see.
I have a sample driver and/or a library from Epson website: EInk ET011TT2 Demo Board and Software
Additional demo/library has been developed and available on GitHub at: GitHub - prashnts/betty-epd: e-Ink Display Driver for masses.
I do not have a datasheet and I bought the display from Aliexpress and the seller does not have a datasheet either.
I am looking for the datasheet and not having any luck.
I am trying to figure out how to wire up the 23 pin connection on the display.
Any help on figuring out best way to wire up the display is appreciated.
Archive.org has "old" information... maybe "too old" for this... but I only find things on Archive.org when I go to the site (versus standard search engine).
Hi, really happy to find someone being confused with this display too.
Here is what I get so far:
ET011TJ1 looks very similar with ET011TT2, and in ET011TJ1 datasheet it shows the pin definition, but somehow the Reference Circuit in ET011TJ1 datasheet shows ET011TJ1 uses the same connector 'FH35C-23S-0.3SHW(50)' as ET011TT2, while actually ET011TJ1 never use it.
I have tried the Reference Circuit and got a pcb, it seems won't work at all.
I will try it on a new pcb, hope it works.
Hope you can figure it out and help me too:>
Just email me if you want: sunxianrun@foxmail.com
Hi,
Thanks for any information you can find. The 23 pin connection is really messing things up.
I did find the datasheet for the ET011TT6 which is supposed to be the successor of the ET011TT2. Can be downloaded here: ET011TT6
This one uses 20 pins 
Any more information you can find would be very welcome.
EInk really do not want makers using their displays and hence will not publish datasheets.
I will let you know I received some information from someone who I cannot be revealed (NDA), They provided the following pin out....but again it was 24 pin...not 23
Here you go. I can't provide you with anymore detail than this. Please note that I have not tested this pinout personally, but it is the best information I could find.
Pin# Signal Description
1 VCOM driving voltage
2 VGL Negative Gate driving voltage
3 VDL Negative Source driving voltage
4 VGH Positive Gate driving voltage
5 VDH Positive Source driving voltage
6 NC Keep Open
7 VDDDO Core logic power pin
8 VSS Ground
9 VDD Power Supply
10 SDA Serial data pin (SPI)
11 SCL Serial clock pin (SPI)
12 CSB Chip Select input pin
13 DC Data / Command control pin
14 RST_N Reset
15 BUSY_N Busy state output pin
16 BS Bus selection pin; L: 4-wire IF. H: 3-wire IF. (Default)
17 TSDA I2C Interface to digital temperature sensor Date pin
18 TSCL I2C Interface to digital temperature sensor Clock pin
19 VSHR Positive Source driving voltage for Red
20 RESE Current Sense Input for the Control Loop
21 GDR N-Channel MOSFET Gate Drive Control
22 VSS Ground
23 FL+ LED+
24 FL- LED-
I find another pin definition on a file in EInk ET011TT2 Demo Board and Software
And this is totally different with ET011TJ1, and no Reference Circuit, I have no idea how to use pins like PREVGL, P07, etc. But considering no matter what connector the display uses the ic will always be the same , so there won't be too many changes on wiring.
Pin# Signal Description
1 VCOM driving voltage
2 VGL Negative Gate driving voltage
3 VDL Negative Source driving voltage
4 VGH Positive Gate driving voltage
5 VDH Positive Source driving voltage
6 NC Keep Open
7 VDDDO Core logic power pin
8 VSS Ground
9 VDD Power Supply
10 SDA Serial data pin (SPI)
11 SCL Serial clock pin (SPI)
12 CSB Chip Select input pin
13 DC Data / Command control pin
14 RST_N Reset
15 BUSY_N Busy state output pin
16 BS Bus selection pin; L: 4-wire IF. H: 3-wire IF. (Default)
17 TSDA I2C Interface to digital temperature sensor Date pin
18 TSCL I2C Interface to digital temperature sensor Clock pin
19 VSHR Positive Source driving voltage for Red
20 RESE Current Sense Input for the Control Loop
21 GDR N-Channel MOSFET Gate Drive Control
22 VSS Ground
23 FL+ LED+
24 FL- LED-
and I am sure that the 8#pin is VSS Ground, and the order of spi pins wont change，so I guess just 9#pin and 22#pin are not defined clearly，let me try it，hope it works.
Hi sunxianrun,
Should you ever figure this out please let me know. I am not actively researching right now as I have a lot of home remodeling going on....but after that I will give it a go again.
Thanks
Mark
Luckily, it works with the following Signal Description ：
1 VCOM driving voltage
2 VGL Negative Gate driving voltage
3 VDL Negative Source driving voltage
4 VGH Positive Gate driving voltage
5 VDH Positive Source driving voltage
6 NC Keep Open
7 VDDDO Core logic power pin
8 VSS Ground
9 VDD Power Supply
10 SDA Serial data pin (SPI)
11 SCL Serial clock pin (SPI)
12 CSB Chip Select input pin
13 DC Data / Command control pin
14 RST_N Reset
15 BUSY_N Busy state output pin
16 BS Bus selection pin; L: 4-wire IF. H: 3-wire IF. (Default)
17 TSDA I2C Interface to digital temperature sensor Date pin
18 TSCL I2C Interface to digital temperature sensor Clock pin
19 VSHR Positive Source driving voltage for Red
20 RESE Current Sense Input for the Control Loop
21 GDR N-Channel MOSFET Gate Drive Control
22 VSS Ground // remove this pin
23 FL+ LED+
24 FL- LED-
But this display is not that good as I thought， it does not support fast refresh. And I can’t change the waveform like other E-INK displays. The only thing I can do is to set different Vcom so that the black pixels could be darker，while even I set it to 4V which is the highest Vcom，it still looks bad. The images displayed on this screen have noticeable artifacts and noise. I speculate that this type of screen display technology lags behind the current e-ink displays, hence it has been phased out.
Hi ,
Did u try it？If u get some methods to let it work better，please let me know. I am wondering if I got a defective display.
Hi,
Have not tried it...but my problem is my display has 23 pins...so not sure what to do what to do with 24 pins.
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