If you’ve got an Arduino project that you want to take one step beyond a temporary breadboard, but don’t want the hassle and expense of creating a custom PCB, Protoduino is for you. In a carefully designed general purpose PCB, all IO pins are exposed, and there’s plenty of room for additional components including another 20 pins worth of DIP. The board is designed for easy customization — traces can be cut to give additional flexibility, and unneeded parts of the board can be trimmed away.
Protoduino — trimmable, solderable, standalone prototype board for Arduino / ATMEGA8/168 – [Link]
This software allows you to get a visual representation of an analog signal using Arduino and Processing. The resolution is 10 bits so this is not like a real oscilloscope but it is still pretty useful. It works by sending values read from the Arduino board (pin 0) to Processing through serial communication.
Poorman’s oscilloscope (with Arduino + Processing) - [Link]
4D Systems makes some really nice serial OLEDS. They aren’t hard to use, but the documentation for them is very scattered. This tutorial pulls together the various pieces i’ve found so that you can get up and running very quickly.
Controlling 4D OLed Displays with Arduino - [Link]
In this lab, you’ll control a servomotor’s position using the value returned from an analog sensor. Servos are the easiest way to start making motion with a microcontroller. Even though they don’t turn 360 degrees, you can use them to create all sorts of periodic or reciprocating motions. Check out some of the Flying Pig mechanisms for ideas on how to make levers, cams, and other simple machines for making motion. [via]
Controling a servomotor - [Link]
I turned an Arduino Protoshield into a digital-to-analog converter with only a few extra parts. It’s proved a lot of fun for audio experimentation and a great way to learn about what DACs do and how they do it.
Digital to analog converters, or DACs, are used to create varying voltage levels from binary off/on signals. Used in a variety of circuit applications, DACs are most commonly known for the role they play in generating audio. There’s a lot of DAC chips out there capable of interfacing with Arduino via data protocols such as serial, i2C, etc. – but if want to learn more with a hands-on approach, consider the simple and affordable R/2R DAC circuit -
Proto-DAC shield for Arduino - [Link]
Ladyada’s just churning out the new kits these days; I’m not sure she’s human. The latest:
Adding quality audio to an electronic project is surprisingly difficult. Here is a shield for Arduinos that solves this problem. It can play up to 22KHz, 12bit uncompressed audio files of any length. It’s low cost, available as an easy-to-make kit. It has an onboard DAC, filter and op-amp for high quality output. Audio files are read off of an SD/MMC card, which are available at nearly any store. Volume can be controlled with the onboard thumbwheel potentiometer. [via]
Wave Shield kit for Arduino – [Link]