Measuring low resistances with a standard multimeter is difficult and very inaccurate. This device solves this problem and serves for accurate measurement of small resistances in the range of 0.1 ohm up to 50 ohms.
This Arduino radio receiver has an attractive look and nice features using an inexpensive color TFT / Arduino and fell componets.
It includes the indication of the frequency in large numbers in the style of vintage seven segments, two bargraphs for indicating the signal strength, selection of 7 BW filters for AM, indication of the wavelength of the band, 2 color themes, Stereo/Mono indication and 14 bands for coverage of LW / MW / SW / CB, ranging from 100kHz to 30MHz and the commercial 64-108MHz FM band.
In this tutorial I am going to show you how to build your own access control system with RFID and Arduino + Cloud logging of attendance.
It is a very good project for IoT beginners and enthusiasts, hope you like it.
A basic instructional video on automating a support release substrate added to print supports by utilizing a sharpie permanent marker. This method avoids a true dual extruder, and additional release filament. An ingenious way to release support material, while maintaining a proper connection to the object all while increasing surface quality with by increasing support! An improvement on the methods of Tumblebeer -(https://hackaday.com/2020/05/27/impro…). Big shout out to all that helped me thing through the software logic, and to those who helped me through the Z script portion (Sharktank72@reddit). Final print towards the end of the video.
In this video we describe how to make an interactive coffee table using ws2812b leds and an Arduino. Not only does this coffee table have WS2812b leds and can display cool light animations, but it doubles as an interactive coffee table that lights up when things get up close to it. It functions by creating a cluster of nodes made up of 2 IR emitters, 2 photodiodes, and 4 ws2812b leds. Upon program startup, each node reads a base value of the ambient light. When an object gets close to the node, Infrared (IR) light is bounced off the object and into the photodiodes. This causes the diodes to change voltage and thus lets the arduino know if something is close. The IR emitters and photodiodes basically act like a proximity sensor and anytime something gets close to it, the sensor will go off. Please comment with any questions you have and like the video if you enjoyed it. If you want to see more content like this one, consider subscribing.
A traditional metal detector can locate a burried item and give you a rough location of the object belw the ground
A pinpointer enables you to pin down an object’s location, make a smaller hole when digging, and extract the item. Also, it can be used as handheld metal detector used by emergency responders to conduct security screening of individuals at access control checkpoints.
This is a smart home kit from Keyestudio. It’s a really fun way to learn Arduino.
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!
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…