raspberry pi python book

Environment: Raspbian-stretch (2018-06-27)Raspberry Pi: 3 generation B Type1, Raspberry Pi equipment, need to be in the field can also have independent networking capabilities, it is necessary to use the Internet of Things module.The SIM868 communication module for micro-snow is used here, such as:2, will SIM868 insert

logic. Yesterday my wife read the Rpi.gpio document, one hours and dozens of lines of code can be achieved by the Raspberry Pi car through the infrared detector tracking operation. It's something that no other language can do or that's hard to do. Video stamp here: Raspberry Pi Infrared Tracking trolley

linux applications. the reason is very simple. perl is fading out, ruby is not powerful, shell is not enough, php is not suitable, and java is not explained. I remember that the Redhat 7 character interface installer was written in python, which was almost the first time I heard about python. it was very powerful, easy to use, and easy to modify and adjust. Don't waste time and energy on things unrelated

For those who already have a certain Linux Foundation, Raspberry Pi should be very simple and natural to learn. In their eyes, Raspberry Pi is a simple, cartoon version of Linux. However, it is not easy for me to compile, compile, and run a simple program for a person or beginner who is familiar with the Microsoft tech

) {});}); Yes, just the three lines of code ... 1th, 2 line to all the buttons (button) bound a click of the event, the third line calls the jquery post method to send This.id (the ID of the clicked button), sent to "/cmd" This path, at this time, our Python code of the second route to work, Received the ID of the clicked button on the webpage, and printed out the "pressed button: XXX" Of course, here are a few if statements to judge, you can follow

障碍时直行 if (in_left == GPIO.LOW): down() time.sleep(1) turn_right() time.sleep(1) n = n - 1 continue if (in_right == GPIO.LOW): down() time.sleep(1) turn_left() time.sleep(1) n = n - 1 continue if (in_right == GPIO.LOW in_left == GPIO.LOW): down() time.sleep(1) turn_right() //如果两侧都有障碍，就右转（个人喜好） time.sleep(1) n = n - 1 continuestop()