Author Archives: R-B

Nickelphone: Coin-based Midi Keyboard

Tyler Bletsch’s Nickelphone is a coin-based music keyboard that has 15 nickels and 10 pennies arranged on a traditional 25-key piano-style layout and act as touch sensors. It can emit simple square wave tones through an onboard piezo buzzer, but its primary use is as a MIDI keyboard, so it can drive a full synthesizer (like FL Studio on PC). Tyler used an ATmega644 microcontroller for his project so that he would have enough I/O pins (each key uses its own I/O pin) for the 25 keys.

The Nickelphone

The Nickelphone

Microchip’s new PIC32 Bluetooth® Audio Development Kit

Microchip has announced  the new PIC32 Bluetooth® Audio Development Kit that enables custom application development on the PIC32 microcontrollers (MCUs) for Bluetooth and USB digital audio solutions.

PIC32

PIC32 Bluetooth Audio Development Kits

The PIC32 Bluetooth Audio Development Kit that ships with audio streaming demo code delivers up to 24-bit, 192 kHz audio and has been tested with over 100 different Bluetooth audio enabled devices, spanning 18 different manufacturers.  The Bluetooth Hardware module and the Bluetooth A2DP audio software have been Bluetooth.org certified, saving the developer significant certification costs.  The modular design allows developers to swap out the included daughter boards (one for Audio and one for Bluetooth), to create their own custom versions with their preferred audio and wireless solution.  The kit also supports USB Host and Device connectivity, Apple® device authentication module interface, a 2-inch color LCD, five general-purpose button switches, 5 LEDs and a Plug-In-Module interface for PIC32 microcontroller upgrades.  The PIC32MX450F256 MCU is included which runs at 80 MHz with 256 KB Flash and 64 KB RAM.  With such a broad feature-set and flexibility, the kit makes an excellent general purpose development tool.

Free PCBs for open source projects

Electronics-Lab has announced to provide 5 pieces of free PCBs for your design if you open-source and publish your project on their website.

Free PCBs for Open Source Projects

Free PCBs for Open Source Projects

Get a professionally manufactured PCB for your design completely FREE!

We are happy to announce our new PCB giveaway program for the OSHW community. We will professionally manufacture 5 pieces of your PCB design and ship them to you worldwide completely free. We just ask to publish your Open Source design on Electronics-Lab.com projects section (under your name) and you will get your PCBs for free in 15-25 days (depending on destination). All designs submitted will be manually reviewed and if applicable will be processed for manufacturing.

 

Automatic re-filler for your pet’s water bowl

This Arduino-based Pet Water Warden helps your pets to get enough water supply when you are gone. It uses two homemade dip probes to sense the water level in a pet’s drinking bowl and automatically activate a pump to refill it from a reservoir when it gets low. The project also incorporates an Arduino Ethernet shield to send a tweet when the reservoir runs out.

Pet water warden using Arduino

Electric energy monitor that writes data to a Google Drive spreadsheet

This recently posted instructable describes a home electricity monitor with Cloud support that saves the measurements into a Google Drive spreadsheet. The project uses Arduino Yun microcontroller board along with a current transformer for sensing current in the mains live wire. The power monitoring is wireless through Wifi, allowing continuous monitoring from a PC or phone and permanent storage on the Cloud.

Electricity monitor using Arduino Yun

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