Mayhew Labs have unveiled a new DAC add-on board they have created for the Arduino platform in the form of the Extended DAC Shield that takes the form of a high-speed, precision, eight channel, -10V to +10V analog output board.
Features of the DAC Shield include a 50kHz maximum single channel output speed, with around 20kHz “usable” speed together with compatibility for both 3.3V and 5V communication-level Arduinos.
Its creators Mayhew Labs explain little more about its functionality and design :
The Extended DAC Shield is a high-speed, high-precision, eight channel, -10V to +10V analog output shield for the Arduino. The design will be open source with schematic, layout, and source code freely available. Below I will outline some of the features and applications of the Extended DAC Shield, explain how it works, and show some oscilloscope captures of its performance.
• Eight channels of -10V to +10V single-ended analog outputs
• Output voltage accuracy better than 0.5%
• Communicates with the Arduino over the SPI header, making it compatible with all Arduino variants
• Solder jumpers to bypass the standard Arduino connections for SPI communication and instead use user-defined connections.
• Outputs can be connected using screw terminals or 0.1″-pitch header
• Comes with stackable headers installed
• Audio signal output
• Function generator
• Arbitrary waveform generator
• Source for voltage controlled devices
• Source for motor driver circuits
• Digital potentiometer
For more information on the new Extended DAC Shield jump over to Kickstarter crowdfunding website where it is now available to pledge for priced at just $20. If you found this project interesting why not build your very own Arduino wind speed meter or anemometer to record the wind speed in your area.