Jacek Fedorynski has recently created an air mouse, a device that attaches to a hat and functions like an actual mouse. Hat mouse, you ask? Instead of controlling it with hand movements, it requires you to use your head. Based on Adafruit’s Feather nRF52840 Sense, this air mouse works by reading accelerometer, gyroscope and magnetometer data, and connects via Bluetooth to run on Windows, Mac and Linux.
This is a video that shows the initial calibration procedure for my DPB program. This was all done in C#, and using an Arduino pro-Mini as the data gatherer from an Accelerometer. More information: Head over to rcgroups and do a search for dynamic propeller balancer for the thread and a lot more info…
In this episode of DIY or Buy we will be having a closer look at a commercial tachometer (RPM Meter) and test it in order to find out that it is pretty much unusable. Afterwards I will show you how a 3€ IR distance sensor works and how we can use it to build a proper DIY tachometer that functions properly. Let’s get started!
Eric Paré is experimenting with Matrix-eseque effects using 15 Raspberry Pi Cameras and Xangle Camera Server software.
Bullet time photography allows a single instant in time to be captured by multiple cameras, enabling one to “spin” around the subject virtually after the fact. It’s perhaps most recognizable from The Matrix film, and more recently Eric Paré has been experimenting with the technique using an array of 15 Raspberry Pi Camera v2 modules and the Xangle Camera Server software package.
As seen in the video below, Paré is by no means a stranger to bullet time, having created some stunning effects with more expensive and physically larger digital cameras. The Pi Camera’s tiny size, however, allows 15 of them to be stuffed very closely together, for what is his best density ever on a multi-camera rig.
Keeping track of how hot your CPU is running can be quite boring, as staring at a list of changing numbers gets old, quickly. That’s why Sebastian from the website There Ought to Be has created a cube with three faces that display CPU usage and temperature statistics. He was inspired to design this when he attended the 36th Chaos Communication Congress and saw the smaller cubes that people were building and using to show particles reacting to changes in the cube’s position. Rather than also making his cube battery powered, Sebastian wanted a stationary device that can plug into the wall, which allows for far more LEDs to be used.
Hello Guys I have Prepare a Tutorial Video on How You Can make a LPG gas Leak Detector Device using MQ-2 sensor and display the data on LCD In this Video I have Used MQ-2 Sensor with Arduino to Receive the Data from the sensor . MQ Sensor senses the air and send and sends it to the Arduino and the data is printed to the LCD Display .Then when the gas level crosses its threshold the light and buzzer are turned on and Alert is Displayed
A complete tutorial to make an Air Quality Monitor with logger on SD CARD with an ESP32. The system monitors CO2, Ozone, Formaldehyde, PM2.5, Temperature and Humidity. A Graphical User Interface made with Raspberry and Qt shows realtime data connecting to ESP32 on Bluetooth.
Source code on https://github.com/vigasan/AirQuality…
A few months ago, some researchers published a paper called SEFR: A Fast Linear-Time Classifier for Ultra-Low Power Devices. It’s possible to run it on a regular Arduino Uno – more ever, to train the machine learning model on the device itself. Simply put, SEFR (which got its name from a related algorithm called semi-supervised ensemble learning guided feature ranking method) calculates a hyperplane between different classes of data with their average values.
Needless to say, as one who sucks at math, I have became very, very interested in this algorithm.
Phoenix CNC’s Hayri Uygur has launched a CAN bus add-on with built-in 1.3″ full-color IPS display panel, designed to offer at-a-glance monitoring of various vehicle functions and wireless connectivity to a phone or tablet.
“This is the newer version of my initial CAN Gauge Micro,” Uygur explains, “[with] more features than before: Dual info screen with speed and RPM; Speed screen with speed warning; RPM screen with shift light; Coolant temperature; Engine oil temperature; Intake air temperature; Ambient air temperature; Throttle position; Voltmeter; Fuel economy; Vacuum, boost/turbo; Air-fuel ratio; O2 sensor voltage, bitmap edited according to your cylinder number; Gear indicator.”
Gearbox and water pump are not new things in this channel, but I was thinking to make the best, most powerful, and insane soo far what I have ever done. Well, here it is. Gearbox with eight engines what is driving water pump what is attached at the front.