캡틴테크의 실전 기술서

Have you heard about 'Go'?, I don't mean you have to go out haha. 'Go' is kind a name of language which makes me feel happy in these-day. Go is made by 'Goolge' and a kind of compile language. Literally, Go has strong points like garbage collection and concurrency. A number of Developers have been struggling to handle memory and Java developers are getting increase due to this reason. However Go..

In terms of HTTP server, we used to utilize the server and find easily. But almost of http server is based on 'TCP'. I don't think the TCP is the best option for embedded system and I don't want to abuse port in my system. Therefore I have decided to use Unix Domain Socket for IPC. # HTTP Using CRUD method which are Create, Read, Update and Delete, we can handle and provide a web service. In add..

Since 2017, I started to make new project with Arduino and describe why I started it in previous article. How easy to make it is and what I can make with Arduino. In addition, I had joined in Hackathon to support for people who are into developing with Arduino. I was shocked how tremendous easy it is. If I think something to make up solution, I can make up with Arduino and others. Okay, here is ..

Today, I would like to describe how to control LED based on Web server. As you might know Arduino is lower specification than RaspberryPI which means it does not have storage area in order to keep their data. Arduino is more suitable to control prompt data like gathering sensor data. In my solution(Pet Feeder), I have been using EV3 brick for Pet Feeder and Arduino is for getting signal from Pet..

I was thinking how to connect between EV3 and Arduino without wifi and bluetooth because Arduino board doesn't have bluetooth module and wifi is working on when All devices are connected to AP. Of course I would like to use wifi module to Arduino in order to communicate but I wish the connection of Arduino and EV3 is possible to use I2C or SPI. Both are general communication way and no need to u..

In order to make 'Pet feeder' solution, I bought one of motors to open and close pet feeder door. I have been searching the web site to find out appropriate mechanical door for pet feeder and here is the list what types are there. # How to work for feeding. 1. Circle style If I press button to feed, food is falling out from the box it might be fed due to moving like circle type. http://nt.petpla..

Today, I would like to show a fundamental function while making solution. If you want to turn on and off a LED, how to make the code for that? we have 2 choices to make it which are 'falling mechanism' and 'ISR'. Here is detailed description what difference it has. # Falling mechanism. Once we need to set up the time how often it will be detected if you use falling mechanism. Assuming If we set ..

Since 2017, I would like to start new IoT Project based on Arduino hardware platform. So far I used to make IoT solution with RaspberryPI 2B and Windows 10 IoT core and finally uploaded my own project to Hackers.io site. Everyone can read and look at the project and take it to follow. By the way more people are interested in Arduino due to easiness. Therefore I decided to use Arduino in order to..