> ...accessibility issue? particularly when there's are buttons right above it that say...

Yes, those buttons may not be "in context" when the page is not being viewed in a visual medium.

> To download PiPedal, click here.

Another appropriate link in this case could be simply:

  *Download PiPedal* now!

Or like your last example, just link it slightly differently to emphasize the action:

  To *download PiPedal*, visit the Download Page.