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


Siegfried Jackstien
 

hmm ... there are usb to relais boards available ... wit 1, 2, 4, 8 or even 16 relais

maybe easier as using lpt cable and rolling your own pcb with relais?!?

dg9bfc sigi

Am 18.03.2021 um 22:22 schrieb Dave AA6YQ:

+ AA6YQ comments below

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

+ Probably not.

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?

+ I'd have updated the documentation if there had been a change.

By the way, lpt has about 4 digital pins for reading. Can the software configurated to read these?

+ No, it can't.

73,

Dave, AA6YQ





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