Arduino Output

What It Does

Especially with Synthesizer modules outputs can (accidentally) be used as inputs 😵. Make sure your sensitive Arduino projects can handle possible weird input voltages.

Simple output with protection

Buffered digital output

Analog unipolar output

• Notice the extre LED.

Analog bipolar output

Sometimes you want the Arduino to output bipolor signals. Unfortunaly the ADC will not output values below 0V by itself.

• Notice the offset and scaling.

R2R DAC

Convert a bunch of digital outputs to a (stepped) analog value.

• Notice the added buffer.
• Notice the added offset.

Digital potentiometer

Build a digital controlled attenuator.

• Please play with the 4 bits to attenuate the signal.
• The advantage of this circuit is that it the signal path is fully analog, while it is controlled digitally!
• Use the CD4053.

Multichannel DAC

If you want to expand your digital CV outputs.

• A typical multiplexer would be from the CD405x family.