Two new/old China Displays/Add support for HX1230

[bobybobybob]

Hello Great Codemaster

do you know what Chip is used for that Mono 128x64 Orange Display? https://aliexpress.com/item/LCD12864-LCD-Screen-128-64-Screen-128X64-LCD-Screen-Shield-Electrum-LED-backlight-Send-application-C51/32848043619.html

I have random test some and U8G2_ST7565_NHD_C12864_1_4W_SW_SPI looks very good

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I have no luck with HX1230 get random work with u8g2

it has 96x68 Pixel 3.3V and is original maybe from nokia.

Some other Codemaster made it work https://www.instructables.com/id/HX1230-LCD-Simple-Arduino-NANO-Clock/

Maybe you can support that lcd with u8g2 too or maybe it is already support but i dont know the right name in the big list.

[olikraus]

The HX1230 looks like a PCF8812 controller:

https://github.com/olikraus/u8g2/wiki/u8g2setupcpp#pcf8812-96x65

[bobybobybob]

I have tested some random

not work : U8G2_SSD1322_NHD_256X64_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_SSD1327_SEEED_96X96_1_SW_I2C u8g2(U8G2_R0,
not work : U8G2_SSD1305_128X32_NONAME_1_4W_HW_SPI u8g2(U8G2_R0,
not work : U8G2_SSD1309_128X64_NONAME0_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_LD7032_60X32_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_UC1701_EA_DOGS102_1_4W_SW_SPI u8g2(U8G2_R0
not work : U8G2_UC1701_EA_DOGS102_1_4W_HW_SPI u8g2(U8G2_R0,
not work : U8G2_PCD8544_84X48_1_4W_HW_SPI u8g2(U8G2_R0,
not work : U8G2_PCF8812_96X65_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_PCF8812_96X65_1_4W_HW_SPI u8g2(U8G2_R0,
not work : U8G2_KS0108_128X64_1 u8g2(U8G2_R0, 8, 9, 10,
not work : U8G2_ST7565_64128N_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_ST7565_NHD_C12832_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_ST7565_NHD_C12864_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_ST75256_JLX256128_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_NT7534_TG12864R_1_4W_SW_SPI u8g2(U8G2_R0,
not work : U8G2_IST3020_ERC19264_1_6800 u8g2(U8G2_R0, 44
not work : U8G2_UC1638_160X128_1_4W_HW_SPI u8g2(U8G2_R2,

Background light flicker U8G2_SSD1606_172X72_1_4W_SW_SPI u8g2(U8G2_R0,
Background light flicker U8G2_SSD1607_200X200_1_4W_SW_SPI u8g2(U8G2_R0,

Mr. Chinese has release a chinese Dataguide but too much chinese i lever learned chinese language to understand it. Maybee you understand some of it https://cdn.instructables.com/ORIG/F4Y/Z9ZU/J76GKXJX/F4YZ9ZUJ76GKXJX.pdf

On backside the lcd there is chinese sign and maybe Korean sign and big hx1230 96 x 68

[olikraus]

Did you Test U8G2_PCF8812_96X65_1_4W_SW_SPI?

[bobybobybob]

Yes i tested all listed above and now again the U8G2_PCF8812_96X65_1_4W_SW_SPI u8g2(U8G2_R0, /* clock=/ 13, / data=/ 11, / cs=/ 10, / dc=/ 9, / reset=*/ 8); // Could be also PCF8814

The display has only CE and i have put CS and later DC on it with no reaction... ok little reaction.. the light flicker some rythmic.

Backside is

GND | BL | VCC | CLK | DIN | N/C | CE | RST
GND| +3.3V| +3.3V| 13 | 11 | | 9 | 8 No
GND| +3.3V| +3.3V| 13 | 11 | | 10 | 8 Only Backlight Flicker

Shall i destroy my LCD and look behind the LCD so I maybe can find an IC Name or other usefull information for you? I have only one. Order a new one take time but ofcourse it is not very expensive, sometimes a little cheaper than the good old 5110nokia

[olikraus]

well, i think there is too less of information, so adding support to u8g2 will be too difficult...

[bobybobybob]

I have a clue :-) I add some Pictures i have made and that is all additional information i can give you. The Backside of LCD is only some Doubletape taped. I have cut it off to make new View.

Maybe it is a litte usefull in future if that LCD get popular or nice Datapaper or help to identify the LCD

panel.
Then we close the topic and look forward to the future.. I will contact you again if I can bring something interesting to new experience.

I am very Happy that the 128x64 Orange Display work out the Box :-)

[olikraus]

I have ordered one of these displays from here:
https://de.aliexpress.com/item/HX1230-LCD-screen-better-than-5110-resolution-96x68-picture-text-display/32810394997.html

It will usually take 4 weeks to reach me.

[bobybobybob]

Dear Codemaster,

I feel very ashamed to have compelled you to buy this LCD. Excuse me. But also thanks for your help for me and other users with great support and cordialiti.

[olikraus]

No issue. It is (A) very cheap and (B) I did this before with many other displays. ;-)

[olikraus]

display arrived... next step: implementation

[54696d21]

Politely asking Hi, can you estimate how long this will take? (I really like the backlight of this display and want to use it for a project that I have to hand in mid-February.) No pressure at all (I have also other displays) :)

[olikraus]

Well, yes... First I started to translate the chinese documentation. So here is the English version of the HX1230 command table:

Cmd	D/C	D7	D6	D5	D4	D3	D2	D1	D0	Description	Init Seq
Set Power	0	0	0	1	0	W3	W2	W1	W0	W=1111: On, W=1000: Off	0x02f
Set Contrast	0	1	0	0	B4	B3	B2	B1	B0	Contrast?	0x090
Set Invert Display	0	1	0	1	0	0	1	1	A0	A0=0: Normal, A0=1: Inverse	0x0a6
Set all Pixel On	0	1	0	1	0	0	1	0	A0	A0=0: Normal, A0=1: All On	0x0a4
Display Enable	0	1	0	1	0	1	1	1	A0	A0=0: Off, A0=1: On	0x0af
Set Page	0	1	0	1	1	0	Y2	Y1	Y0	Page 0<=Y<=7	-
Set Column Lo	0	0	0	0	0	X3	X2	X1	X0		-
Set Column Hi	0	0	0	0	1	0	X6	X5	X4		-
Set Scan Start	0	0	1	S5	S4	S3	S2	S1	S0	Start Line 0<=S<=63	0x040
Write Data	1	D7	D6	D5	D4	D3	D2	D1	D0

[olikraus]

done

I personally would say, that there are better displays: The contrast is still a little bit high and can not be reduced further (maybe i should test 3.3V power supply). There seems to be only one backlight LED in the upper left corner which leads to a little bit unbalanced backlight. But no doubt, price is great.

@bobybobybob
This is a three-wire SPI display module. So for U8g2, only the 3W constructors will work:

U8G2_HX1230_96X68_1_3W_SW_SPI u8g2(U8G2_R0, /* clock=*/ 13, /* data=*/ 11, /* cs=*/ 10, /* reset=*/ 8);

So from that perspective it was no wonder, that none of the other displays did work.

[olikraus]

please download U8g2 2.21.6 from here:
https://github.com/olikraus/U8g2_Arduino

Install via Arduino IDE (add zip lib menu). Will the HX1230 support work for you?

[bobybobybob]

I found out, out variable turning-resistor on VCC+GND exit to VCC Display it is possible to make little tuning on contrast. Is backlight active it is smaller range for contrast but also good.

[olikraus]

looks good :-)

[54696d21]

Thank you very much :) It works for me too. Except for rotation levels R2 and R3 (as constructor value), so rotating by 180 and 270 degrees doesn't work at all.

[olikraus]

Oh, then maybe I have to check the rotations. Thanks for the feedback.

[olikraus]

Thank you very much :) It works for me too. Except for rotation levels R2 and R3 (as constructor value), so rotating by 180 and 270 degrees doesn't work at all.

I checked this, for R2 and R3 some rows/columns are missing. i will do some further investigation.

[olikraus]

Fixed R2 and R3.

[bitbank2]

The commands to flip the HX1230 180 degrees are similar to other controllers: 0xc8 + 0xa1

[olikraus]

Is this a question or a bug report?

[bitbank2]

In your code repo, it appears that the flip180 logic for the HX1230 is commented out. I thought you would find it useful to know the 2 commands needed to implement it. (0xc0 & 0xa0 resets to normal).

[olikraus]

oh, I did not know this... I will test this...

[olikraus]

Excellent. Works without problem. Thanks a lot.

[mcauser]

@olikraus 3 additional commands for your table above:

Cmd	D/C	D7	D6	D5	D4	D3	D2	D1	D0	Description	Init Seq
Flip Horizontal	0	1	0	1	0	0	0	0	N/R	Normal 0xa0, Reverse 0xa1	0xa0
Flip Vertical	0	1	1	0	0	N/R	0	0	0	Normal 0xc0, Reverse 0xc8	0xc0
Software Reset	0	1	1	1	0	0	0	1	0	0xe2	-

If you flip both horizontal and vertical, it's effectively a rotate 180 deg.

If you don't use the RST pin (connect to VCC), you can perform a reset in software with 0xe2.

[olikraus]

Great, thanks for the additional commands.