Hi, Indiegogo, we are ElecFreaks. We are proud to bring about the Dynamic Near Field Communication tag (DNFC tag), an invention that who especially tech nerds and DIY lovers have been expected for long. It greatly outstands among traditional read-only NFC tags because it’s readable and rewritable and it can communicate with various platforms, to
DNFC Tag: the Pre-Eminent NFC Tag that Interacts with MCU Continue Reading
Project Summary: We have designed an Oscilloscope using PC and Arduino Board. The signal is first of all fed to the Arduino Board where the analog signal is converted to a digital signal by the ADC which is then serially outputted to the PC and is read by the MATLAB software via the COM ports.
A PC and an Arduino: here’s your DIY Oscilloscope Continue Reading
A die photo of the interesting but little-known TL431 power supply IC provides an opportunity to explore how analog circuits are implemented in silicon. While the circuit below may look like a maze, the chip is actually relatively simple and can be reverse-engineered with a bit of examination. This article explains how transistors, resistors, and
Reverse-engineering the TL431 Continue Reading
Introduction The fundamentals to translating the analog world into the digital domain reduces to a handful of basic parameters. Voltage, current, and frequency are electrical parameters that describe most of the analog world. Current measurements are used to monitor many different parameters, with one of them being power to a load. There are many choices
Sensing Elements for Current Measurements Continue Reading
Note: this post about an electronics project has been sitting as a draft since 2011 so some of its content might appear outdated. Regardless, I’ve been using the device since then so I figured I should commit it to posterity. To my computer, its simply a USB keyboard, nothing less, but to me its a
keyMote: a simple wireless remote for computers Continue Reading
This is my first attempt at an instructable. I hope it helps someone else. Switches and Lights and fans, oh my… I bought a CNC machine some time ago and I was never happy with it. It used a traditional parallel port controller and of course no modern computers have those. So it was always
Raspberry Pi Alamode CNC Controller Continue Reading
Keep losing things? Want to share & track belongings with friends? Locate bags/keys in an instant? Scheduled to ship in JUNE! #FIND Kickstarter special pricing only during the campaign! MSRP will be $24.95 per FIND tag later. Back us now! Shipments scheduled in JUNE! What does the FIND tag do? The FIND is the best
FIND V2.0 – Never lose anything! Share or track via App Continue Reading
I got the idea for this circuit from one of my professors. That design wasn’t meant for passing frequencies high enough to be able to pass an audio file, e.g. 500Hz+, so I built this by modifying the carrier and signal frequencies, using only the Digilent Analog Discovery and the Analog Parts Kit. It should
FM Modulation/de-modulation Circuit Continue Reading
ICStation team introduce you how to DIY this temperature & humidity & smoke alarm system based on ICStation Mega 2560 compatible with Arduino.The working voltage of this system is DC5V.It can measure the current temperature, humidity and smoke. It can display real-time data by the 1602 LCD and can realize the sound and light alarm
DIY Temperature & Humidity & Smoke Detector Continue Reading
Welcome! For our Environmental Capstone class (senior thesis) for St. Olaf College we built a monitor that would effectively monitor how much water a shower uses. The idea behind this water monitor is that if you attach a piezo transducer (small microphone) to a shower pipe, you can calibrate the average of the vibrations while
Shower Monitor Arduino with LCD display Continue Reading
