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About Greyling

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About Greyling
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picaxe123

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02-06-2015
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Newbies' guide to parallel HD44780 LCDs and Winstar OLEDs / AXE133 as a project board

by Greyling on 12-08-2015 at 04:18
Quote Originally Posted by nick12ab View Post
Take advantage of the greater speed

Quote Originally Posted by nick12ab View Post
  • Faster - the parallel interface is faster than any serial display and this is particularly true for an LCD at 2400 baud. Most serial LCDs (including the AXE033) consist of a parallel LCD and microcontroller to convert the serial data to parallel so from that you can see that it is impossible for a serial LCD to be as fast as a parallel LCD. An example of how you can exploit this extra speed is to have a 'firmware update' screen where about twice

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APA102 5050 RGB LED with Integrated Driver

by Greyling on 10-08-2015 at 16:56
Quote Originally Posted by premelec View Post
@Greyling - I haven't used the 28X2 but suggest you look at the hspi commands and setup sniper used and look at Manual 1 P34 for HSPI clock and data out connections on the 28X2... Have you tried these? The APA102 is pretty straightforward to drive... clock and data and a variety of speeds - I'm working on some code for old 08M PICAXEs [just to use them up!] - I have with some success.

I remember that I've added 220 ohm resistors in series with clock and data lines from PICAXEs as

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APA102 5050 RGB LED with Integrated Driver

by Greyling on 09-08-2015 at 23:48
Quote Originally Posted by rjandsam View Post
Hi Technical,
thank you for the great examples, I have only just gotten around to playing with the strip today and have to say I am impressed.

I have taken your example code and modified it to do a single colour fill followed by a complete empty, I was just wondering if the way I have done it is the fastest method. I understand obviously that the empty routine takes longer as you have to fill each time to the next pixel you want to empty as you state in your readme file that

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Wait, I have a blog? COOL!

by Greyling on 09-08-2015 at 21:40
I had no idea this was here. OK, back to work.
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here's Q

by Greyling on 09-08-2015 at 21:39
Quote Originally Posted by jinx View Post
Q is a 4 wheel drive bot am working on am using the 28x2 base shield two lm293D motor drivers and a 14m2 to control the servo. has four micro geared motors and four metal geared MG90 servo's, a quick pan around https://www.youtube.com/watch?v=0zpg2XtOaeY powered by 4 AA read a little more over at http://www.letsmakerobots.com/robot/project/q this link http://www.picaxeforum.co.uk/showthr...26577-here-s-Q how to wire

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