More information about huidu WF series

[Jimmmy-y]

When I received this board,
I was surprised to see that it had an ESP32 built in.
I thought it could be used as a development board,
so I searched for it.

Related URL
#433
https://github.com/kreier/huidu_hd-wf4
https://github.com/mrfaptastic/HD-WF1-LED-MatrixPanel-DMA

WF2 and WF4 are driven by ESP32-S3.
(WF1 is ESP32-S2)
This product can run up to 768 x 128
(probably up to 1280 x 256)

This board worked great with the LED module below.
P2
https://ko.aliexpress.com/item/4001321148041.html
P2.5
https://ko.aliexpress.com/item/1005006612553395.html
P2.5 OUTDOOR
https://ko.aliexpress.com/item/1005005020479938.html

Datasheet
WF1
https://huidu-cn.oss-ap-southeast-1.aliyuncs.com/eData/File/Specifications/Single_color/WFX_series/HD-WF1%20Specification%20V0.1.pdf
WF2
https://5.imimg.com/data5/SELLER/Doc/2021/8/HR/TA/BA/134227014/huidu-hd-wf2-led-controller-card.pdf
WF4
https://yuchip-led.com/wp-content/uploads/2021/08/HD-WF4-Specification-V6.0.1.pdf

[mrcodetastic]

Good Intel.

WF2 and WF4 are driven by ESP32-S3.\n(WF1 is ESP32-S2)\nThis product can run up to 768 x 128\n(probably up to 1280 x 256)

You will not be able to drive such large resolutions using this library unless you reduce the colour depth to like 3bits.

From whatever software that ran on the ESP32-S2 / WF1 version, it only have 4 bit colour and bigbanged the GPIO.

This library uses 24bits per pixel colour depth by default which uses a lot more memory and therefore reduces the effective resolution you can drive with a good (aka. Low visible flicker) refresh rate.

[harissutanrafiq]

So the goal is to drive two parallel sets of panels by alternating the LAT between them?

That's like a bit of a library rewrite...

Yes right sir

And still noise

[harissutanrafiq]

Ahh this what i want, its possible we just need 2 LAT Pin

@harissutanrafiq Using a different LAT pins and common color channels (R1R2G1G2B1B2) on two HUBs seems to be completely pointless as for me. As I mentioned in #661, this method doesn't provide any advantages comparing with traditional daisy-chain connection.

So the goal is to drive two parallel sets of panels by alternating the LAT between them?

@mrcodetastic It absolutely useless, I think. The MUST HAVE condition to parallel driving of two panel sets is using a two sets of color channel (R1R2G1G2B1B2) pins. By using two LAT pins we can only address two sets of panels sequentially.

But why chinese Huidu controller using two channel ?

for speed it is not so good, but for effectiveness this pin saving is very useful. I think for 4bit color the difference is not so visible.

[board707]

or speed it is not so good, but for effectiveness this pin saving is very useful

What is the effectiveness in that case?
I don't want to argue with you, connect the panels as you like. I just don't see any point for myself in using this approach.

[harissutanrafiq]

or speed it is not so good, but for effectiveness this pin saving is very useful

What is the effectiveness in that case? I don't want to argue with you, connect the panels as you like. I just don't see any point for myself in using this approach.

Ah ok sir, any way thanks for your fast response. And i love your lib using dmd rgb stm32 👌

[harissutanrafiq]

or speed it is not so good, but for effectiveness this pin saving is very useful

What is the effectiveness in that case? I don't want to argue with you, connect the panels as you like. I just don't see any point for myself in using this approach.

Just update my project, it works now