charlieplexing

jmumby

Senior Member
Bummer you can't really take advantage of this on picaxe, well you sort of can on 08m but 5 ports controlling 20 led's that would be cool.
 

Dippy

Moderator
Are we celebrating the anniversary of that teeth-grinding post by 'useless'.

Almost exactly a year ago and on the same subject.

Have search jmumby....
 

hippy

Technical Support
Staff member
The 18X can have its outputs made into inputs, so that can control 7 x 7-segment displays.
 

hippy

Technical Support
Staff member
On the 18X, you have to poke the shadow register ($AE) to set direction and then control the pins by poking PORTB SFR ( $06 ).

Details and examples - <A href='http://www.rev-ed.co.uk/picaxe/forum/Topic.asp?topic_id=5857&amp;forum_id=29&amp;Topic_Title=Bi%252DDirectional%2BI%252FO%2Bon%2BPICAXE%252D18X&amp;forum_title=No+new+posts+please%21+21' Target=_Blank>External Web Link</a>
 
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