In this blog, we intend to develop an application that is built on RASBERRY PI using java and computer vision APIs. It will detect the hand gesture and consequently pass the signals to IR device which will then perform appropriate home automation. OpenCV and JavaCV are the core part of computer vision APIs. IR device is used as a base for communication between the two.
ForewordI've recently been developing a few ESP8266 based IoT projects and found the core processor was struggling to carry out all the tasks I needed it to manage, so I decided to distribute some of the less important activities to a different microcontroller(s) in this way freeing up the ESP8266 to get on with its job of being an IoT device.
by Peter Boxler : Native Raspberry Pi does not have an On/Off switch and there is no easy way to shutdown the Pi while keeping the filesystem intact. This Intelligent Power Switch allows just that: Power-On the Pi by pressing a pushbutton and also properly Power-Off the Pi with another press on the same button.Read More
Using an Arduino as an HID, Evan Kale turned a “gently used” analog mixer into a computer interface. Older audio equipment may not have the interfaces that you need to make totally electronic music, but they can be very well-built, so are perhaps worth salvaging. In the video below, Kale salvages potentiometers from an old mixer, then […]
In order to be able to upload Arduino sketches directly to the ATtiny84 over USB without the need to use a programming device, Shawn Hymel, an electrical engineer at Sparkfun Electronics, had published a guide showing how to install the micronucleus bootloader, which supports virtual USB (V-USB), onto an ATtiny84 using Arduino. The Atmel AVRRead More
In this tutorial we'll be writing our first bash script for Raspberry Pi. We'll create a directory to keep this and future scripts, write the actual script, and set it up as something that can be executed from the shell. Scripts are an incredibly powerful tool to have in your toolbox. In essence, a script is just a sequence of commands that you could otherwise have entered into the shell.
I recently installed an air-source heat pump for water heating system. Usually, they cost around 10000 EUR/USD, but I got used and Chinese made one for just 500 EUR/USD. As you probably know you should never buy used heat-pump, fridge etc., just because owner bought a new one. Usually, they do not break often and if they do or they have some other problem, only then the owner would sell it (if he is evil..). Anyway, I did not consider this and was willing to risk.
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