D
David Hulbert
- Jan 1, 1970
- 0
What's the easiest way to get analog voltages from a computer? The
current shouldn't be a problem as the signal could be amplified.
Can you just connect the data and ground pin from a serial port and
send all 0s for 0V, 1010101010 for 1/2 voltage and all 1s for full
voltage (with differnt combinations in between)? It's to connect to a
motor, which I doubt would notice anything happening over 1kHz.
Would I have to smooth out the output some how? If so, how can I do
this? (I have a bit of elecronics skill but not lots)
Can you program the data lines on a USB cable to do the same? This
would be more practical but I don't know if it's even possible.
What about parallel ports?
The diagram at http://www.epanorama.net/documents/pc/parallel_dac.html
looks like it may work but I don't know. Might this be easier than a
serial port?
Also, once I've got the voltage, it will probably be from 0V to 5V or
something. What would the easiest way to get that from 0V to around
12V?
Cheers
Dave
current shouldn't be a problem as the signal could be amplified.
Can you just connect the data and ground pin from a serial port and
send all 0s for 0V, 1010101010 for 1/2 voltage and all 1s for full
voltage (with differnt combinations in between)? It's to connect to a
motor, which I doubt would notice anything happening over 1kHz.
Would I have to smooth out the output some how? If so, how can I do
this? (I have a bit of elecronics skill but not lots)
Can you program the data lines on a USB cable to do the same? This
would be more practical but I don't know if it's even possible.
What about parallel ports?
The diagram at http://www.epanorama.net/documents/pc/parallel_dac.html
looks like it may work but I don't know. Might this be easier than a
serial port?
Also, once I've got the voltage, it will probably be from 0V to 5V or
something. What would the easiest way to get that from 0V to around
12V?
Cheers
Dave