arduino obd2

After a reincarnation, hardware development and hardware entrepreneurship were pushed to the front-end of history. For low-end and elementary hardware enthusiasts, open-source hardware with the core of Arduino and 81 single-chip development boards is becoming increasingly popular. More and more people are involved, and related hardware and peripheral modules are getting cheaper. In addition, with the creation of various maker spaces, a hardware module

is more popular with startups. According to data analysis, Mozilla RUST and Facebook's HACK in the second half of 2017 will also be able to squeeze into the forefront of the rankings. 2017 rankings are expected to rise in the language:r--Today, the world is growing in demand for statistical data and data analysis, and if you find that your work is increasingly linked to r, it is not impossible for R to be the most sought-after language of the 2017. once matla--becomes the core language of mathe

[dispbuf_len]; /** * Set cubieboard's gpio port-D pin I/O mode: Input/Output */ Void pinmode (unsigned int pin, unsigned int io_mode) { If (setup_ OK! = Sunxi_gpio_set_cfgpin (pin, io_mode )) { Printf ("failed to config gpio pin \ n "); } } /** * Set cubieboard's gpio port-D pin value (low/High) */ Void digitalwrite (INT pin, int HL) { If (sunxi_gpio_output (pin, HL )) { Printf ("failed to set gpio pin value \ n "); } } /** *

simplifies the HTTP protocol and provides only four rest Methods: Put, get, post, and delete, unlike HTTP, coap simplifies the HTTP protocol. As for why it is rest, let's take a look at the articles on Iot system design on this page. The advantage of using UDP for coap is that HTTP is not a feasible option for the network of IP addresses with limited resources. It occupies too many resources and too much bandwidth. For embedded devices such as IOT, this is a top priority. Coap uses a binary h

the selected device, modify the configuration file, and then open the minicomcom() {ports=`ls /dev/ttyUSB*`select port in $ports;do if [ $port ]; then echo "You select the choice '$port'" port=${port##*/} sed -i "s/\(pu port .*\/dev\/\).*/\1$port/" /etc/minicom/minirc.ttyUSBx exec minicom ttyUSBx [emailprotected] break else echo "Invaild selection" fidone}Introduce this function in ~/.BASHRCecho 'source ~/.myminicom.sh' >> ~/.bashrcsource ~/.ba

Original link: https://www.arduino.cc/en/Tutorial/Knock Percussion detectionThis tutorial shows you how to use a piezoelectric sensor to detect vibrations, such as knocking, tables, or other solid surfaces. A piezoelectric sensor is an electronic device that generates voltage when it is physically deformed by vibration, sonic, or mechanical strain, and similarly, when you apply a voltage to a piezoelectric transducer, it vibrates and produces tones. Piezo components can be used to play tone

. Later, you also need to learn about the version control concept of Git, such as how to submit code, how to manage branches, and how to control versions. This should be combined with how to manage and submit code among team members. Git concepts------- Github is a server that provides the Git code version management service. What are the benefits of using version control and code hosting? We can browse our code and documentation (for example, arduino