Hello!
I want to control the pot and program selection pins via a microcontroller / dac.
Do we know the maximum current these pins get?
Pot and program selection pins max current ??
Moderator: frank
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Re: Pot and program selection pins max current ??
We never measured those specific parameters but the POT inputs are 10M minimum input impedance and the switch inputs are normal digital inputs so they will also be high input impedance. Basically shouldn't be an issue for any micro to drive them.
Frank Thomson
Experimental Noize
Experimental Noize
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Re: Pot and program selection pins max current ??
Thanks for the swift reply Frank!
At the moment I'm thinking of an unbuffered DAC with 1ma max drive current per output. Do you think it would be possible to drive these pins with no issues??
Re: Pot and program selection pins max current ??
Should be no problem, these things are normally in the microamp range.
You may want to check if the DAC requires a minimum load some do to operate properly so the input impedance may be too high and you need to add a load resistor.
You may want to check if the DAC requires a minimum load some do to operate properly so the input impedance may be too high and you need to add a load resistor.
Frank Thomson
Experimental Noize
Experimental Noize
Re: Pot and program selection pins max current ??
You may need to check that the voltage is in range as well, if using a micro like the Arduino at 5v you will need to allow for 3.3v for S0-S2 and for the pot inputs you\may need to add PWM filtering.
www.stanleyfx.co.uk
"It's fairly straight forward, if you want to start it press start, you can work out the rest of the controls yourself."
"It's fairly straight forward, if you want to start it press start, you can work out the rest of the controls yourself."
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Re: Pot and program selection pins max current ??
Thanks again Frank!
It will be with an atmega running at 3.3V so I guess voltage range should be good.