Understanding PCB cost is crucial for effective budget management. Key factors include core materials, board specifications, and design complexity like fine lines and advanced vias. Quality standards such as IPC Class, testing requirements, and especially order quantity also significantly influence the final price, allowing for better project planning and cost optimization.
The image is mainly about the difference between the work principle of WS2812 and WS2813 LED strip. The most obvious difference is: when the led one of the WS2812 was broken, it will affect the other led working, but the WS2813 will not appear above situation.
If you don’t know the WS2812 or WS2813, please allow me to introduce them to you.
Generally speaking, WS2812 has two versions: WS2812 and WS2812B. WS2812B is an upgraded version of WS2812. They are an integrating control circuit and the intelligent external control LED source of the light-emitting circuit, which looks similar to the 5050LED. It internal included intelligent digital port data latch and signal reshaping amplification drive circuit. Also include a precision internal
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The free item I would like to recommend today is SIM808 GPRS/GSM+GPS+Bluetooth Shield . This is one of hottest products on our site. Except for popular ESP8266
Sharing bicycle went viral in China’s top cities, like Beijing, Shanghai, Shenzhen and Guangzhou. The idea of sharing bicycle is really awesome. It can brings lot of convenience to the local resident and improve the traffic effectively. And at the same time, it encourage a healthier way of travel, instead of going out by car or by bus, you can exercise by riding the sharing bicycle. And the price of renting is very low, the expensive cost is 0.14$ per half hour.
The two biggest company of sharing bicycle is OfO and Mobike. Both of the bicycle are put into mass production to seize the market share.