Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Back to basics – pull-up resistors

If you start dealing with microcontrollers, you will definitely face the term ‘pull-up’ resistor. This is not a resistor type, but rather its purpose. As name already states it pulls something up. A1RONZO have written very explanatory tutorial where he goes through almost all aspects of pull-up resistors including typical circuits on AVR microcontrollers, how to calculate its value and how to deal with internal and external pull-ups. If you are just starting to learn interfacing and programming microcontrollers, be sure to read through and understand whey they are there. Continue reading

Multiple Arduino Microcontrollers with I2C

You’re always want to challenge yourself doing something extraordinary than the dull, boring projects? How about figure out the ways to connect the multiple Arduino microcontrollers with I2C? Is it sounds interesting enough? You might probably asking, “You must be kidding, isn’t it? It’s a piece of cake to connect the multiple Arduino microcontrollers with I2C!” Well, in order to prove that you’re capable to handle this project, then let’s jump into the project straightly! First thing first, you’ll use I2C to connect several Arduinos together to combine their power. Oh, by the way, do you know the definition of “I2C”? (Hold on a second, it has nothing to do with the Y2K! lol) I2C is the short form of “Inter Integrated Circuits”, where is one of the well-known multi master serial computer bus technologies. It has been widely being used in different systems, especially to connect the peripherals of low speed data transmission. Phillips was the company that invented this I2C, but is used in many electronic applications in nowadays. Let us back to the main topic. If you’re… Continue reading