While adulations were still being showered on his work on the MORPHESP 240, Dr. Philippe Cadic (@Sulfroid on twitter), recently shared progress on another project called the RFL-Watch, via his twitter handle which is usually loaded with reports on the progress of his projects. Based on the RAK4260, the RFL-Watch is a wearable LoRa communicator device which at the […]
MEET THE RFL-WATCH: LORA-BASED TEXT COMMUNICATOR Read More »
Introduction Our final project is a NES-style chiptune player that changes its playback tempo in response to heart rate measurements from the user. The chiptune player successfully generates four individual channels: pulse, triangle, noise, and delta modulation. After audio mixing through a hardware circuit, the resulting mono signal sounds as intended, with no waveform clipping
Chiptune Mega Mega Read More »
Introduction “A device that pitch-shifts voice in real time” For our final project, we attempted to implemented a real-time vocal pitch shifter. The system was designed to work as follows: a user speaks into a microphone, their vocals are processed using a pitch shifting algorithm, and the resulting signal is output through speakers. All of
Real-Time Pitch Shifter. Read More »
Introduction This project visually displays the frequency content of an audio signal using an 8X3 grid of LEDs. A microphone and amplifier collect analog audio input which is sampled digitized using the MCU’s analog-digital converter. The samples are buffered and and a 32 point discrete cosine transform is performed in real time to obtain 32
Frequency Visualizer Read More »
Introduction For our final project, we have decided to use the microcontroller provided to make a device which would measure body fat percentage of one’s body. The basic principle behind this project is known as bioelectrical impedance analysis. This technique uses a small alternating current flowing between two electrodes attached to skin surface to determine
Bioelectrical Body Fat Analyzer Read More »
INTRODUCTION This project implements a real-time scrolling spectrogram-style visualization of an audio signal. We successfully displayed the frequency spectrum content in real time using a 4-bit grayscale scrolling display on any NTSC television. The frequency spectrum of an audio line-in input or mic input is calculated and displayed in real time using two ATmega1284 microcontrollers
REAL-TIME SCROLLING SPECTROGRAM Read More »
Analog Devices’ LTC7804 offers low Iq, small solution size, and PassThru™ operation for up to 99.9% efficiency ADI’s LTC7804 is a low IQ, 3 MHz PassThru operation capable synchronous boost DC/DC switching regulator controller that operates up to a 40 V input voltage. Its low quiescent current extends operating runtime in battery-powered systems. Spread spectrum frequency
LTC7804 40 V 3 MHZ BOOST CONTROLLER WITH SPECTRUM FREQUENCY Read More »
Rohde & Schwarz (R&S) released the SMCV100B, a signal generator that covers 5G NR extended FR1 frequency range up to 7.126 GHz. It leverages the R&S WinIQSIM2 simulation software, which supports common cellular and wireless connectivity standard. This includes standards for IoT and Wi-Fi. Working within the automotive industry, the R&S SMCV100B is suitable for end-of-line testing of radios
ROHDE & SCHWARZ RELEASES NEW SIGNAL GENERATOR Read More »
ATmega32 – 8 Bit AVR Microcontroller The AVR microcontrollers are based on the advanced RISC architecture. ATmega32 is a low power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. AVR can execute 1 million instructions per second if cycle frequency is 1MHz. Key Features: 32 x 8 general working purpose registers. 32K bytes
Types of AVR Microcontroller – Atmega32 & ATmega8 Read More »
High Performance Fixed Frequency PLO at 9.25 GHz Z-Communications, Inc. announces a new RoHS compliant fixed frequency phase locked loop model SFS9250C-LF operating in the X-band. The SFS9250C-LF is a simple to use plug and play PLO allowing for quick integration. It is designed to produce a fixed signal at 9250 MHz while locked to
NEW PHASE LOCKED OSCILLATORS AVAILABLE IN TAPE AND REEL PACKAGING Read More »
