Voice Changer project can be used to transpose or distort one’s voice by encoding the sound appearing at the Microphone input. This project is built around AP8072 IC. Specifications Supply input : 6 VDC @ 200 mA Output : Speaker, 8 Ω / 0.5 W Audio amplifier type LM386...

diycrap.blogspot.com has build a SWR and power meter based on Arduino Nano and LCD display: First of all, this SWR meter in this article is not exactly homebrew, as I based the circuit on the schematic in the excellent book Arduino Projects of Amateur Radio. Although I bought the...

There's a new FPGA development board on Kickstarter. It's called the Nandland Go Board, and it aims to be an inexpensive, easy-to-use FPGA development board to learn about how FPGAs work and what they are capable of. This board is unique because it provides a lot of options for...

Modulowo DuoNect™ is a universal solution for rapid prototyping and production that allows easy connection of expansion modules, such as sensors, controllers, buttons, analog and digital IC, GPS, Bluetooth, WiFi (and more) for platforms, such as, Intel® Edison, Raspberry Pi,...

This reference design is a power management of Xilinx ZedBoard using MMPF0100 Power Management Integrated Circuit (PMIC). A PMIC is an IC for managing power requirements of the host system and is commonly used in a system-on-chip (SoC) device. On the other hand, the Xilinx ZedBoard, a...

The Tiny Mic Preamplifier based is based on a single transistor amplifier design. It amplifies the output of the electret condenser microphone. Good choice for Karaoke. Specifications Power supply: 5 ~ 9 VDC @ 2 mA Provides standard audio signal PCB dimensions 26 mm x 56...

a1ronzo @ learn.sparkfun.com explains us the importance of pull-up resistors and when and why they are used in digital circuits. Pull-up resistors are very common when using microcontrollers (MCUs) or any digital logic device. This tutorial will explain when and where to use pull-up...

Maurizio @ dev.emcelettronica.com tipped us with his latest article on how to measure Resistance Temperature Detectors over long distances. There is a multitude of process parameters nowadays that need to be measured in the industrial environment (temperature, pressure, humidity,...