Hi Raquel,

My firmware has been working with LK204-25 version 1.23 or early for over three years without any problem, over 200 units with LK204-25 have been sold. The MCU communicates with LK204-25 via I2C bus either as software controlled master transmitter when sending string to LK204-25 display ...

Hi,

For LK204-25 v1.23 version (user manual rev1), it is clear defined the keypad interface on page 17. For example, column 2 and row 1 are for 'B'... We use C2-C5 with R1, and it has been working in product for years.

With new v2.0 version, If you look at page 42 of <<LK204-25 technical manual ...

Hi, Henry,

A few mothes ago, I sent following issue to the forum and got response from you, now can I ask again, is that version available ? thanks

Daniel

Daniel write:
If I set the backlight off, when I power off LK204-25 and power on again,
backlight returns to ON, Can I save the settings ? so ...

Hi,
We are using LK204-25 in our product. We use it in power on and power off mode. I realize there is short wair after power on before you can send char to the LCD via I2C bus, it seems to me about at somewhere between 200ms and 500ms. I have two questions about that.

(1) If there is start up ...

Hi,

We find some LK204-25 display company logo when it is powered on. However
we use LK204-25 at power on and power off mode, so it is a bit pain every time when we want display information we will see logo first, can you please tell me how to get rid of it ? I am sure you have some software to ...

Hi,Herry,

"In about 4 months we will be releasing a new version of the display, and it will feature that ability"

"new version of the display", You mean the new version for LK204-25 or another product ? Thanks

Daniel

Hi,

If I set the backlight off, when I power off LK204-25 and power on again,
backlight returns to ON, Can I save the settings ? so I power on Lk204-25, its backlight is till OFF. Thanks

Daniel

Hi :

We use LK204-25 in our product as human interface via I2C bus, both display and keypad. however, we miss the key press somtimes, we have to press (a bit hard) same key again.

Because LK204-25 has a built-in CPU and buffers key press, our software has been designed quite simple to access key ...