Beginner: Which one is better, a Bluetooth module or a wireless data transmission module with a transmission distance of about 100 meters? Please give me some suggestions....
I got a STM32L151C8T6 board, powered by a 3.3V button battery. But the battery died. I used STLINK to power it, and it should be 3.3V, but when I measured it with a multimeter, it was 4.77V, and somet...
wince 5.0 arm9 ------------------------------------------ Now I need to use RS485. I want to modify the serial port driver directly. The transmit and receive switch of the 485 chip is controlled by a ...
What do you think of when you see this topic? A. Fly into the air like Superman and shout loudly. B. Buy a plane ticket and shout loudly during the flight. C. Design the image logo (LOGO) and slogan o...
When I use the emulator to debug the following program, it enters the interrupt very slowly, and I need to press full speed run and then stop, and repeat this several times before I can enter the SD24...
RF/Wirelessly
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