12864 LCD from fish8840

Other Hardware Displays
1

Hello, boght my self http://www.ebay.com/itm/12864-LCD-Transistor-Tester ,but allmost imidiatly coocked with charged cap :frowning: , disided to salvage part, and realised that lcd is not regular pinout and library is based on arduino 1.0. Can anyone help with powering up LCD (pins: GND, VCC, SID, SCLK, RS, RPST, CS )

2

Were you ever able to get this lcd working? I've got one from a fried transistor tester as well that I'd like to re-use.

3

Just thought I would post some information on this display after looking up the exact same thing as the two users above. I dug down into the rabbit hole and uncovered that the display used in the tester I received (which I also fried :frowning: ) uses a fairly common display driver called the ST7565. with that information in hand, I looked up the u8g2 lib to see if it supported the display and sure enough, it's supported.

From what I have seen online, these displays are NOT 5v tolerant and should be driven at 3.3V power, and logic levels. However, I'm currently doing the exact opposite using an Arduino UNO with 5v logic and power and it seems to have no adverse effect on the panel. I can't guarantee longevity of it though, might fry sooner or later..

On my particular board, the 6 pins are labeled:

  • GND
  • VCC
  • SID
  • SCLK
  • RS
  • RESET

I have wired GND -> GND on my UNO along with VCC -> 5V.
I then wired:
SID -> Pin 11
SCLK -> Pin 13
RS -> Pin 9
and RESET -> Pin 8.

U8g2 supports a few different variants of the ST7565 type boards (16 different ones!), and so I also went and sorted through all of them to see which one worked correctly for this particular panel. Some were inverted colors, others flipped text, and some I don't even know what. In the end though, this is the right board line for u8g2, with the correct pins as I have described above:

U8G2_ST7565_64128N_F_4W_SW_SPI u8g2( U8G2_R0, /* clock=/ 13, / data=/ 11, / cs=/ 10, / dc=/ 9, / reset=*/ 8 );

Now I am happily driving this honestly very good display with ease on the Arduino UNO :slight_smile: 8) 8)

Anyways, Happy Hacking and Merry Christmas!

4

I have same problem, after using about 3 years my fish8840 is damaged because of the charged capacitor connected to the input.

I changed the atmega328p chip. Burnt the chip with the hex file provided in karl-heinz.
The display is blank and display remains on.
I also tried to check the display with the information provided in this forum with u8g2 library but does not work.
Please help me

5

Hi Nickld
I followed your instruction but it did not worked for me.
What do you mean by arduino pin? I think it should digital pin of arduino (13,11,10,9and8)

8

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