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This project is a little VU meter and spectrum analyzer using an op-amp, an Arduino and a 16×2 char lcd.
AVR VU meter and spectrum analyser – [Link]
Jeri Ellsworth has produced the first two in a series of A to Z electronics videos, sponsored by Adafruit. Here are A is for Ampere and B is for Battery.
Ampere is a unit of measurement for current and was named after André-Marie Ampère. [via]
Jeri’s A to Z Electronics - [Link]
Make writes: [via]
With the Solar TV Remote project from MAKE Volume 25, you’ll never have to replace your remote control’s batteries again. Instead, just leave it in the sun to charge up! This project is fairly easy and you may already have most of the tools and supplies you’ll need.
Solar TV remote - [Link]
Ben Heck writes: [via]
Have you ever noticed that there never seems to be a charger around when you need one – I sure have,” said Ben Heck. “In this latest episode, I look at kinetic motion to create a portable cell phone battery charger in the event you’re ever lost on a deserted island and need to call for help to get rescued.
Wind-up charger boosts battery life for Android phones - [Link]
Solder pads in IC packages could soon be made obsolete by a new nanotape material developed by researchers at the Semiconductor Research Corporation (SRC) and Stanford University. Using a sandwich of thermally conductive carbon nanotubes between thin metal foils, the nanotape transfers heat away from chips better than solder, and according to the researchers it is a lightweight, flexible material that is cheaper and more compliant. [via]
Nanotape may oust solder pads – [Link]
Especially for electronics enthusiasts, students and professionals Elektor now offers an App they cannot affords to miss on their iPhone, iPod Touch or iPad. The Elektor Electronic Toolbox is a collection of no fewer than 28 electronic tools that can be picked from a comprehensive set of icons.
The toolbox includes extensive databases for bipolar transistors, triacs, thyristors, diodes and ICs. Of course you can scroll through the long lists with one finger, but it is also possible to run a search. After touching a part number, key specifications of the relevant component appears including the connection details. There are more than 45,000 components to be found. There is also a separate database with connection data connectors for audio / video, computer and telephone applications. [via]
Elektor App for iPhone, iPad and iPod - [Link]
This project is an ultrasonic bat detector using only a PIC12F683, a piezo receiver and a piezo speaker. Source code and schematic are available on the link below. [via]
picoBAT – an ultrasonic bat detector – [Link]
voidptr shared a CPLD development board he made a few years ago: [via]
i used few times some xilinx xc9572xl with pleasure (and few other sizes). i like the family 5V tolerance, so i can plug that everywhere…
CPLD development board – [Link]
