tag:blogger.com,1999:blog-1231032798237497505.post8671393228331002191..comments2022-04-03T01:36:19.806-07:00Comments on Vehikelfranz Bastelecke: Kleines Zwischendurchprojekt: serielles Display für den Golf 3-Tacho anstatt der Uhrvehikelfranzhttp://www.blogger.com/profile/10449865940679907208noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1231032798237497505.post-10255293273052429852017-06-22T18:36:09.725-07:002017-06-22T18:36:09.725-07:00Hello Edwin,
Sorry, at the moment i dont really ha...Hello Edwin,<br />Sorry, at the moment i dont really have the time to<br />pay the necessary attention to this blog, <br />so please excuse this very late answer<br /><br />Yes, this was a fun-project for some rainy day!<br />It is a modification of an earlier Project<br />when i made a Curtis 840-Clone.<br />The serial protocol is very simple, <br />and the displayed text is generated in the<br />sender.<br />There is almost no schematic....<br />(everything is "standard" like described for any arduino)<br />You neet a potentiometer (ca.10k) for setting the contrast,<br />The display is direct connected to the attiny.<br />(the pins are set in the first lines of the program)<br />The serial port needs an inverter, ideal is a MAX232<br />or something similar, but if you want to save place,<br />you can do this with a simple transistor.<br />(that is not really recommended....but it works for a simple display)<br />For a better reliability of the serial connection You should use a quartz<br />and everything runs at 5V.<br /><br />Of course i have a hex file, but in this case you can install <br />a free version of bascom (less than 4k of final code) <br />so you can adapt everything to your needs.<br /><br />especially the "checksum-thing" will cost you a lot of nerves<br />as long as You are in the test-phase. It should be removed<br />until everything else works!<br /><br />have fun!<br />Franz<br /><br /><br />vehikelfranzhttps://www.blogger.com/profile/10449865940679907208noreply@blogger.comtag:blogger.com,1999:blog-1231032798237497505.post-60752715368873203252017-05-25T12:34:58.556-07:002017-05-25T12:34:58.556-07:00Looks like a fun project. Did you draw up a schema...Looks like a fun project. Did you draw up a schematic for this and do you have a hex file I can use to program the tiny?<br /><br />Kind regards,<br /><br />EdwinEdwinhttps://www.blogger.com/profile/01067198190815048306noreply@blogger.com