Search found 45 matches

by dmitryp
Wed Feb 26, 2014 11:44 am
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

Hi Sam, Good, the number of possible permutations is getting less :) It has been eventually overlooked by me that the numbers on your picture are in decimal format, not hex. This has been fixed in VFDPanel_19S9D.h in POS2ADDR_MAP_PGM byte array. However, it is still not consistent with what you post...
by dmitryp
Tue Feb 25, 2014 12:26 pm
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

Hi Sam,

Oh no, there were too many bugs, sorry. It seems that I found a way of testing without VFD, at least partially. Please try the updated driver.



Thank you,
Dmitry
by dmitryp
Mon Feb 24, 2014 12:36 pm
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

Hi Sam, Here is an updated version of VFD driver for your panel. I tried to hide complexities of the hardware implementation so that from application point of view segment mappings are the same for all digits and all digits are linearly addressed by a column number in range 0... 13. Try to run PT631...
by dmitryp
Thu Feb 20, 2014 12:18 pm
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

'However, nothing else should be glowing on other digits...' This was resolved by writing 0x00 to all addresses first I would expect PT6311 RAM buffer to be cleared automatically upon start. At least it works like this in case of Holtek drivers. Oh well, maybe it is a wishful thinking. Doesn't matt...
by dmitryp
Tue Feb 18, 2014 1:43 am
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

Ok, so I made a bit more progress and understand a little more about how it functions. Adding these lines to the sketch: write_raw(0b0000000, 27); pt6311_driver.addrSetCmd(24); write_raw(0b00111110, 1); write_raw(0b10110110, 1); pt6311_driver.addrSetCmd(22); write_raw(0b10100100, 1); pt6311_driver....
by dmitryp
Tue Feb 18, 2014 1:06 am
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

In this line: write_raw(0xFF, 9) What does the 9 signify? Is it the number of bytes sent? If so do you specify 9 in case we are using more than 16 segments? So for 16 segments 6 should light up the first 3 digits? Could I use the same command format to try and light up segment number 1 on all 9 dig...
by dmitryp
Tue Feb 18, 2014 12:43 am
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Re: Driving VFD panels with PT6311 controller

I finally got round to wiring this up and testing the sketch you kindly provided. My display is 9 grids 16 segments (actual segments on each grid range from 8 to 16) so initially I tried the sketch set to 12d16s - this lit up a few segments on each of the 9 digits (but not all segments on any digit...
by dmitryp
Sat Feb 01, 2014 12:12 am
Forum: General Technical Discussions
Topic: Driving VFD panels with PT6311 controller
Replies: 56
Views: 101512

Driving VFD panels with PT6311 controller

This topic has been sparked by a question asked at http://www.instructables.com/id/A-DVD-Player-Hack/ Samhayward2002 has a VFD panel with PT6311 controller and he wants to drive it with Arduino-compatible board. In order to do this, a basic software driver has been designed. A simple sketch is inclu...
by dmitryp
Sat Aug 10, 2013 2:28 pm
Forum: General Technical Discussions
Topic: Speccy2010 FPGA Project Hacks
Replies: 0
Views: 29953

Speccy2010 FPGA Project Hacks

This is the main thread dedicated to non standard firmware revisions and hacks for Speccy2010 board (http://atmega.magictale.com/category/zx-spectrum)
by dmitryp
Sat Aug 10, 2013 2:24 pm
Forum: General Technical Discussions
Topic: Dot Matrix LED Display Panel
Replies: 0
Views: 28361

Dot Matrix LED Display Panel

This is the main thread dedicated to Dot Matrix LED Display Panel (http://atmega.magictale.com/category/led-matrix-display/)

Latest schematic revision: 1.0;
Latest board revision: 1.0;
Latest firmware revision: 1.0 (in AVR Assembler only);

Status: working prototype.

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