When we designed the wave shield we needed a way to generate a fairly clear audio signal. One way to do that is to PWM a pin and then filter it, but you need to have a good filter, and a fast PWM. Another way to do it is to use a R2R resistor DAC which works well but takes a lot of space. In the end we found this nice 12-bit DAC in a through-hole DIP package. It takes 3-5V and has a easy serial interface. If you ever need a DAC but can’t use a R2R or PWM, this is very easy to breadboard.
ARE YOU LOST? BE FOUND, WITH THE PART FINDER!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Transforming Today’s Bad Jobs into Tomorrow’s Good Jobs
Wearables — Not a loophole
Electronics — Rule of thumb: 10mils per amp.
Biohacking — Biomimicry – 8 Useful Technologies Inspired by Nature
Sorry, the comment form is closed at this time.