It is believed that the first task for anyone learning Arduino or other microcontrollers is to light up an LED, similar to the ‘Hello World’ program in C language. This time, we will also try to light up an LED using the GPIO of the Raspberry Pi. 1. Understanding Raspberry Pi B’s GPIO GPIO (General-purpose … Read more
From the relevant information about the Raspberry Pi, we can see that there are two serial ports available: one is the hardware serial port (/dev/ttyAMA0), and the other is the mini serial port (/dev/ttyS0). The hardware serial port has a separate baud rate clock source, providing better performance and stability; the mini serial port has … Read more
The control of the servo generally requires a 20ms timing pulse, where the high level part of this pulse is typically within the range of 0.5ms to 2.5ms for angle control. For a 180-degree servo, the corresponding control relationship is as follows:0.5ms————–0 degrees;1.0ms————45 degrees;1.5ms————90 degrees;2.0ms———–135 degrees;2.5ms———–180 degrees;Please see the illustrative description below: The operating voltage … Read more