mrmstainsby
New Member
is there a way to interface a pic 18x to a proper monitor without using a PC? (ie. using little TFT or LCD screens)
Pic to monitor
- Thread starter mrmstainsby
- Start date
The most easy way is, to use a separate Video-Chip for this.
At http://www.roboternetz.de/phpBB2/viewtopic.php?p=213827#213827
you can see a long thread about this. (Sorry, it is in German). Finally, somebody did the job with one simple Atmega8 Chip, 3 Resistors and a 16 MHZ Resonator.
The Atmega8 acts as a serial Text-Video-Terminal. You can use Baudrates from 1200 up to 19200 Baud. 40 columes with 25 lines can be displayed. The full ASCII Characters are available. The chip generates a b/w PAL signal.
All you need is an Atmega8 and a way to flash the video-firmware. The firmware itself is free.
Gerry
At http://www.roboternetz.de/phpBB2/viewtopic.php?p=213827#213827
you can see a long thread about this. (Sorry, it is in German). Finally, somebody did the job with one simple Atmega8 Chip, 3 Resistors and a 16 MHZ Resonator.
The Atmega8 acts as a serial Text-Video-Terminal. You can use Baudrates from 1200 up to 19200 Baud. 40 columes with 25 lines can be displayed. The full ASCII Characters are available. The chip generates a b/w PAL signal.
All you need is an Atmega8 and a way to flash the video-firmware. The firmware itself is free.
Gerry
hippy
Ex-Staff (retired)
A PICAXE can probably be interfaced to any type of LCD but it helps to know what sort of display we are really talking about.
If it's a display which has Composite Video, RGB or VGA input then an interface as above should do the job. There are also commercial interfaces which do that.
If it's an LCD such as on the Nokia 3210 it is possible to control it directly from a PICAXE with just a few control lines.
If it's an LCD such as that taken from a PDA or laptop, it may require considerably complex circuit to interface with.
If it's a display which has Composite Video, RGB or VGA input then an interface as above should do the job. There are also commercial interfaces which do that.
If it's an LCD such as on the Nokia 3210 it is possible to control it directly from a PICAXE with just a few control lines.
If it's an LCD such as that taken from a PDA or laptop, it may require considerably complex circuit to interface with.
picaxester
Senior Member
Heres a bunch of links to check out if you want to use an old nokia phone, I got a couple working. You can store images on a i2c EEPROM chip it's just really slow.
http://homepage.ntlworld.com/c.lewis19/nokia.htm
http://www.selbing.com/_jakob/electronics/nokia.htm
http://sandiding.tripod.com/lcd.html
http://wsj1983img.blogspot.com/ <skroll down for this one.
Good luck.
eric
http://homepage.ntlworld.com/c.lewis19/nokia.htm
http://www.selbing.com/_jakob/electronics/nokia.htm
http://sandiding.tripod.com/lcd.html
http://wsj1983img.blogspot.com/ <skroll down for this one.
Good luck.
eric