[align=left]Before, I used the IO port to simulate SPI to drive the OLED. After all, the speed of the IO port is slower than SPI, and there will be obvious delays when refreshing. It is much better to...
Recently, due to the epidemic, we have been closed twice in less than a month. The order backlog is serious and I want to find a patch welding factory for welding. Since the patch was done manually be...
[i=s]This post was last edited by strong161 on 2019-11-25 13:33[/i]Seeing that everyone is busy and I haven't posted for a long time, I will also post a10th anniversary post. This board has historical...
I came across a circuit: a pnp transistor controls the position of a common anode digital tube. The problem is that the collector of the s9015 is connected to the power input, which doesn't make sense...
China's 3G is quiet, WiMAX is the focus 2006-7-11With the rapid development of communication technology, wireless replacing wired has become an inevitable trend, and 3G and WiMAX have become hot topic...
The kawaii-mqtt package is a cross-platform MQTT client based on the socket APIThe MQTT client based on the socket API has a very simple API interface, implements the QOS2 quality of service with very...