WS2812-16X16 dot matrix open source

Introduction: 16X16 WS2812 dot matrix, PCB size 12cm*12cm, is already a quite compact version.
It uses a general 5050 package, which cannot fit within 10*10. In order to accommodate 16*16, the size is larger than 10cm.
There are only 15 104 capacitor filters on the designed board, which is not a big problem. For details, you can see the quibbles in my video: WS2812 lantern FAQs_bilibili_bilibili
The effect of dot matrix lighting is as shown in the picture: 16X16 dot matrix displays random symmetrical patterns_bilibili_bilibili
because I bought the highlight WS2812, so it’s really bright. In the video, the brightness value of WS2812 is only 2, yes, it’s single digits.
The current of WS2812 is 255, which is very powerful, but you are not using it for lighting. Just write a few dozen brightness and that’s about it.
Production cost:
PCB: Printed in JP, monthly card user
WS2812: I bought 1050 pcs at once, you can watch the video for details: [Unboxing] A plate of WS2812 lanterns, 1050 pcs_bilibili_bilibili
80RMB, 1000 pcs , so 256 lights, 20RMB, is the lowest price you can buy.
SMD 104 capacitor: This doesn’t cost much, so don’t forget it.
Pin header: Solder the pin header according to the situation, and make it into a pin header to prevent the pad from being pulled off.
 
Welding: This Teppanyaki is just fine, no big problem. It is recommended to cook the teppanyaki in batches. I am afraid that it will be too tiring to cook 256 at one time. I didn't do the steel mesh, I did it all manually and in 3 steps. If it's attached incorrectly, just dismantle it.
Component purchase link: [Tencent Documents] Electronic Studio Sharing Form https://docs.qq.com/sheet/DYm1tTUFlRWhkQVJt
 
There are techniques for drawing dot matrix. There will be a video to share later. Video address: Electronic Studio- Personal space_bilibili_bilibili
 
program code: What, you want a program? No, the underlying code of WS2812 lantern - suitable for all types of STC microcontrollers_bilibili_bilibili
 
Warm reminder: This PCB has a large number of WS2812. When using the microcontroller to control it, pay attention to the power supply. If it is a computer USB power supply, do not give it. The computer USB cannot bear the higher brightness. Can be connected to an external power supply for power supply.
Actual measurement: When the written brightness value is 120, the current is around 4A (single color and multi-color).
Multi-picture display