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Because I have not tested all electronic circuits mentioned on this pages, I cannot attest to their accuracy; therefore, I do not provide a warranty of any kind and cannot be held responsible in any manner.
Simple R-2R DAC for your project
25. August 2009 - 19:05 — admin
Do you need some simple digital-to-analog converter? The best way is to use a kind of R-2R circuit (also called "resistor ladder"). Here is a R-2R DAC module for your devices.
The circuit is really simple - it contains just a bunch of SMD resistors. It's value doesn't matter as long as it keeps the rule "R and 2R". You can use for example 10kω and 20kω.
The construction perfectly fits to the breadboard. More information and Eagle source code are here: R2R ladder