What is the PCB? As far as Printed circuit board is concerned, it is a board which is used in electronics. It has many pathways or signal traces to support and electrically connect many electronic components with one another. Moreover, this board is designed with fiberglass or any other laminate material. What are the different […]
What is a PCB? Pros & Cons of Major PCBD Types Continue Reading
We were struck by how attractive [mircemk’s] Arduino-based frequency counter looks. It also is a reasonably simple build. It can count up to 6.5 MHz which isn’t that much, but there’s a lot you can do even with that limitation. The LED display is decidedly retro. Inside a very modern Arduino Nano does most of the
EASY FREQUENCY COUNTER LOOKS GOOD, READS TO 6.5 MHZ Continue Reading
A beach is always a relaxing summer vacation destination, a great place to hang out with a drink and a book or take a swim in the ocean. For those who need a more active beach-going activity with an electronics twist, though, metal detecting is always a popular choice too. And, of course, with an
ARDUINO FINDS TREASURE Continue Reading
A radio receiver is always a fun project. [Jayakody2000lk] decided that his new superheterodyne design would use an Arduino and it looks like it came out very nicely. The system has four boards. An off-the-shelf Arduino, a Si5351 clock generator board (also off-the-shelf), and two custom boards that contain the IF amplifier and mixer. The receiver started
ARDUINO BECOMES SUPERHET WITH A LITTLE HELP FROM FRIENDS Continue Reading
[JanHerman] knows that tuning musical instruments is all about precision and that precision is measured in a logarithmic unit called a cent. A cheap tuner unit might be accurate to 1.5 cents which sounds good until you look at one for ten times the price and find it is accurate to 0.1 cents. So you
ARDUINO PIANO TUNER IS PITCH PERFECT Continue Reading
This sketch is used by Exercise: Event-Loop Programming. Full Source Code The full code is all in one file EventLoopDemo.ino. // EventLoopDemo.ino : demonstrate generation of two simultaneous square waves at different rates // The example program generates audio-frequency square waves at different // pitches on pins 4 and 5 to demonstrate a simple event-loop control structure
Arduino Sketch Event Loop Demo Continue Reading
A traditional early project for someone discovering a love for electronics has been for many years a metal detector. This would mean a few transistors back in the day, but today it’s more likely to involve a microcontroller. [Mircemk] has an example that bends both worlds, with a single transistor oscillator and an Arduino. This type
A NO-CALIBRATION METAL DETECTOR Continue Reading
Nexperia announced the market’s fastest common mode filter (choke)/ ESD protection combination. The new PCMFxUSB3BA/C features the industry’s widest differential passband of up to 10 GHz 3 dB frequency and very high surge robustness of up to 7.5 A 8/ 20 µs. It is designed to suppress common mode and single-ended noise while minimizing the
To extract information from QR codes and use a Barcode & QR Code HAT and a Raspberry Pi Pico. Description To extract information from QR codes and (even create your own barcode & QR Code using Python), use a Barcode & QR Code HAT and a Raspberry Pi Pico. What Are QR Codes and How Do They Work?
Scan QR Codes with Raspberry Pi Pico Continue Reading
An interesting aspect of time-varying waveforms is that by using a trick called a Fourier Transform (FT), they can be represented as the sum of their underlying frequencies. This mathematical insight is extremely helpful when processing signals digitally, and allows a simpler way to implement frequency-dependent filtration in a digital system. [klafyvel] needed this capability
THE FASTEST FOURIER TRANSFORM IN THE WEST Continue Reading
