Re: Send 5 Volts on off signal for ant switch relays


Joe Subich, W4TV
 

Can laptop pc be used with "usb to lpt convertion cable"?
No. LPT Support in Commander is memory mapped. The USB to
LPT cables are serial devices and rely on a serial driver in
the operating system with shift register output.

By the way, lpt has about 4 digital pins for reading. Can the
software configurated to read these? For example, over temperature
signal and the software be configure to perform some auto action,
like send a cat command to set lower power?
Not currently supported.

73,

... Joe, W4TV


On 2021-03-18 6:09 PM, Simon wrote:
Hi Dave,
Many thanks for advises.
Can laptop pc be used with "usb to lpt convertion cable"?
Example,
https://www.amazon.com/StarTech-com-USB-Parallel-Printer-Adapter/dp/B002DUEFHY
The last line in wiki says pci plug in board on desk pc is good. Usb device
can not be used. Wonder if this had relaxed over time as now?
By the way, lpt has about 4 digital pins for reading. Can the software
configurated to read these? For example, over temperature signal and the
software be configure to perform some auto action, like send a cat command
to set lower power?
73
Simon
On Friday, March 19, 2021, Dave AA6YQ <aa6yq@ambersoft.com> wrote:

+ AA6YQ comments below

Planning for a home brew relay box to route the rig to diffetent ant
depends on band.

Can the software send 5 Volts on off signal via a hardware box?

+ Yes. See "Controlling an External Device like an Antenna Switch via a
Parallel Port" in

https://www.dxlabsuite.com/dxlabwiki/ControlAntennaSwitch

73,

Dave, AA6YQ

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