"John Byrne" <design@microlights.ltd.uk> wrote:
> Can anyone please help me with any info related to aquiring a single
> channel, 0-5Vdc analogue input into a PC using a serial or the parallel
> port and no special i/o card?
You don't mention price but it sounds like you are very low-end, so
I'd suggest any of a number of companies that sell serial-port data
acquisition modules. I've never seen a single A/D channel like
you spec- always 2 or more plus multiple digitals inputs, but
I have seen prices as low as $50 but $100 seems more the norm.
These are typically about the size of a long gender-changer, with
25 pin serial on one side and connectors for data acq on the other.
Some are encased, some bare-board.
Haven't ever used one of these but I imagine you'd find one
pretty fast with a web search.for something like
"serial port data acquisition module".
regards
Stan
----------------------------------------------------------------------
Stan Bischof Hewlett Packard Company 707-577-3994 rsb@sr.hp.com
----------------------------------------------------------------------
> Can anyone please help me with any info related to aquiring a single
> channel, 0-5Vdc analogue input into a PC using a serial or the parallel
> port and no special i/o card?
You don't mention price but it sounds like you are very low-end, so
I'd suggest any of a number of companies that sell serial-port data
acquisition modules. I've never seen a single A/D channel like
you spec- always 2 or more plus multiple digitals inputs, but
I have seen prices as low as $50 but $100 seems more the norm.
These are typically about the size of a long gender-changer, with
25 pin serial on one side and connectors for data acq on the other.
Some are encased, some bare-board.
Haven't ever used one of these but I imagine you'd find one
pretty fast with a web search.for something like
"serial port data acquisition module".
regards
Stan
----------------------------------------------------------------------
Stan Bischof Hewlett Packard Company 707-577-3994 rsb@sr.hp.com
----------------------------------------------------------------------
channel, 0-5Vdc analogue input into a PC using a serial or the parallel
port and no special i/o card?
I only need 8 or 10bit resolution (I think).
This is in relation to a light measurement system using a Megatron selenium
cell with external amplifier, giving 0.1V per 1000Lux on the cell. (minimum
1000Lx, max 50000Lx)
Any links or info related to HPVee examples would be useful.
many thanks in advance,
John Byrne. Microlights Ltd. UK.