Re: New file uploaded to [email protected]
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On Wed, Apr 1, 2020 at 05:56 AM, "[email protected] Notification" <[email protected]> wrote:
including revised attenuator object to enable parallel versions to be used (requires additional IO expander hardware).Actually, you can use the parallel attenuator without the PCF8574 GPIO expander but you'll need to?repurpose some of the GPIO pins we've reserved for future enhancements. They are listed in the post before this one. You need a total of?6 pins for the attenuator. There are currently two un-assigned, so for example, you could use the?three?reserved for an encoder and the one reserved for the SD card chip select. Glenn's PCB used the PCF8574. ? -- John P. WA2FZW |
John P