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board707 / DMD_STM32

STM32Duino library for RGB, Monochrome and Two-color led matrix panels
GNU General Public License v3.0
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Connection question on Parallel Monochrome example #122

Closed xuniuer closed 3 months ago

xuniuer commented 3 months ago

Hi there,

I now test library with RP2040 PICO to drive P10 monochrome panel. Here is a question about row1, row2 as follows -- 7, 8:

#if defined(ARDUINO_ARCH_RP2040)
#if defined(DMD_PARA)
#define DMD_PIN_A 1
#define DMD_PIN_B 2
#define DMD_PIN_nOE 14
#define DMD_PIN_SCLK 15

// These pins must be consecutive in ascending order
uint8_t pins[] = { 6, 7, 8 };  // CLK , row1, row 2
#else
#error Monochrome_SPI mode unsupported for Rasberry Pico RP2040
#endif
#endif

As the example says, it's for ACROSS 1, DOWN 2 connection of two parallel panels. How do you make the connection which I could not figure out?

I know it's described in wiki, but the diagram link seems to be broken.

Thanks in advance.

board707 commented 3 months ago

Hi Sorry, I don't understand, what is your issue... How many panels do you want to connect?

xuniuer commented 3 months ago

Hi, thanks for your attention. In fact I want to connect 14 panels (P10, monochrome) together to gen a big matrix. I know the library is already flexible to support my requirements, such as connection schema and DMD_Monochrome_Parallel . I have checked your wiki to confirm it. Here just want to confirm cable connection for example of dmd_monochrome where two panels are paralleled. If I should connect DMD_PIN_A, DMD_PIN_B, OE, SCLK and CLK to panel#1 and panel#2 at the same time, then, separately, connect 6 - row1 to panel#1, connect 7 - row2 to panel#2, just defined in example source code.

---- Replied Message ---- | From | @.> | | Date | 08/12/2024 15:23 | | To | @.> | | Cc | @.>@.> | | Subject | Re: [board707/DMD_STM32] Connection question on Parallel Monochrome example (Issue #122) |

Hi Sorry, I don't understand, what is your issue...

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board707 commented 3 months ago

I want to connect 14 panels

What is configuration of your big screen? Is it 7 panels wide and 2 rows high?

xuniuer commented 3 months ago

Sorry for late to reply because of frequently broken connection to github from China mainland.

My screen is as big as your guess. I have tested it by using one chain on RP2040 pico. Thanks.

Plus, I wonder if the library could support a RGB screen with 240x160 resolution?

board707 commented 3 months ago

I have tested it by using one chain on RP2040 pico. Thanks.

Hope you solved the problems with parallel connections.

I wonder if the library could support a RGB screen with 240x160 resolution?

No, that would be too good :) The tested maximum is 256x64. I planned some improvements, but I don't think it will be more than 256x128 in nearest feature.

xuniuer commented 3 months ago

Thank you!

I planned some improvements, but I don't think it will be more than 256x128 in nearest feature.

Sounds great already! I will have more tries with the library.