A gas detector is a device which detects the presence of various gases within an area, usually as part of a safety system. This type of equipment is used to detect a gas leak and interface with a control system so a process can be automatically shut down. A gas detector can also sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to leave the area. This type of device is important because there are many gases that can be harmful to organic life, such as humans or animals.
Almost every new hardware has some kind of connectivity available. Wireless connectivity has many advantages such as easy connection, no wires attached, no additional connectors and there for robustness (you would be surprised that for example micro USB connectors are declared to have only few thousand cable release cycles before subject to wear out).
In this example we will explain how to make your own IR system for remote control and you will see how that system can be applied for directing mobile robot (or similar processes).
System consists of transmitter and receiver. IR LEDs emit light on frequency that is detectable with commercial IR receiver. How system works? On picture you can see how is NE555 times used to modulate IR light at 36 kHz.
The usual method of bringing analog inputs into a microprocessor is to use an analog-to-digital converter (ADC). Here are some tips for selecting such a part and calibrating it to fit your needs.
For communication with outside world and other components microcontroller uses many different kinds of communication. Here you will find detailed explanation on how each of these communication protocols. Details of principles how the work, what you must know before you can use them. And when finished here you can go to tutorial sections for specific family and get complete example codes and detailed description on specific microcontroller family. These are UART, I2C, SPI, USB…
Basic functions that every device does are measurement and control. That is why it is important to know how to properly measure something and what sensor to use.. Here you will find explanations on these topics to help you with implementing hardware for your microcontroller project.
As previously mentioned Control is one of most important things in every project. Weather you need to control some DC motor using PWM, timer circuits with NE555, Using servo motors, Using PID regulation or any kind or regulation you will find useful articles here describing basic term from this are that you need to know before you can start making your project. Here are mentioned only few of areas this category of www.electronics-base.com covers. PLL frequency regulation… list is endless. When you get the basics you can get example codes written in microcontroller C compiles on tutorials page or find complete project with source code and all documentation in projects section of the site.
General descriptions not fitted in any specific category from field of electronics.
General explanations about microcontroller specific topics. What are GPIO pins, TTL levels, Reset circuit.. If you have just started to work with microcontrollers and do not have much knowledge about them than here are useful texts to read before you go to tutorials or complete projects section of www.electronics-base.com and continue learning about world of intelligent electronics.
This category contain articles about gas sensors, their principles of work. There are several common techniques of gas sensing, such as electrochemical, catalytic, infrared etc. Found out more information about carbon monoxide, carbon dioxide, methane, ammonia, hydrogen sulfide, LPG, oxygen and many more gas sensors. Explanation about common schematics and microcontroller usage are given. Visit http://www.electronics-base.com.