1 analog output not 8 1 CV output right? well 2 right? one for pitch and one for gate? or is it 3? bleh too new to this. So the analog pin output of the arduino would run into the mpc822/4922? So I'd need 8 of these dacs then? They'd do the rc filter and opamp? Would their output be -12 to +12v. so it would be arduino PWM -> RC filter -> opamp.īut I would suggest to use a cheap DAC like the MCP4822 or 4922, that gives you a nice breadboardable dual channel 12 bit DAC. The Arduino analog output pins are not the output of DACs but only PWM outputs, so you need some filtering in order to obtain a stable analog value.Īlso they are 0-5V, that would give you 5 octaves of CV unless you scale it up with an opamp, which I would recommend anyway. Like there would be a switch between using the "LIVE" pots and using a stored pattern. Then these voltage values (floating point number) could be stored as a pattern right? Then you could recall these patterns from memory (saved to eeprom) and output those analog voltages on another set of analog output pins? You could easily make say an 8 step sequencer reading the pot values on 8 analog input pins. I've never output on the analog pin though. I've used them for reading pot voltages a lot. JenniferG wrote:I know the Arduino has analog input and output pins. I've fiddled around with arduino using LCD display, reading sensors and making a large midi controller with an array of analog 4051 mux chips. New to analog electronics - my experience has been with computer programming and simulated digital electronics (made an 8 bit cpu in logicworks back in the 90's for a computer science course). The voltages are -5 to +5 volts, so somehow they'd have to be converted to -12 to +12 v right? In PATTERN mode, those input pots would temporarily be ignored, instead a pattern from memory is output. In LIVE mode the analog input values of the pots would be read and instantly output to the analog out pins. Then these voltage values (an array of floating point numbers) could be stored as a pattern right? Then you could recall these patterns from memory (saved to eeprom) and output those analog voltages on another set of analog output pins? EDIT: going to output to a DAC via 3 digital pins, serially. The arduino seems like it would be a great way to make a sequencer no? I know the Arduino has analog input and output pins.
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