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  1. premelec

    BASIC alphabetic commands list?

    On previous forum version there was a command line URL to BASIC commands. Could someone provide that link please? The link I've found is; http://www.picaxe.com/BASIC-Commands which doesn't have them listed in alphabetic fashion... thanks
  2. premelec

    Reserved words & Symbol silly question

    Which reserved words are allowed in Symbol definitions like "Symbol BAUD = T2400" ?
  3. premelec

    Qualifier length in SERIN command

    I found a ref to qualifier length being up to 8 bytes in this thread - post #13 [Hippy] http://www.picaxeforum.co.uk/showthread.php?22672-Transmitting-text-strings-and-ASCII&highlight=qualifier+length is this true for all PICAXE chips when using SERIN? Thanks...
  4. premelec

    Best cheap addressable audio MP3 player?

    I'm thinking of a project [arty] that would have a three dozen selectable MP3 files of 20 seconds or so to be controlled by PICAXE 14M2 - Looking in archives I didn't find any definitive recommendation. LoFi sound ok [voice] Please make suggestion... perhaps with files on SD card... thanks...
  5. premelec

    SERIN & simple RF modules clarificaton needed

    I have seen reference many times to noise on simple receiver modules hanging up SERIN which evidently just stays active looking at the noise - Is this correct? [command description doesn't seem to address this]. erco recently referenced http://www.romanblack.com/RF/cheapRFmodules.htm which...
  6. premelec

    DS18B20 intermittent "85" reading

    I have an 18B20 on a fairly long lead on an 08M2 that intermittently reads "85" incorrectly and persistently... what causes this? Thanks [I did a search with no result found]
  7. premelec

    14M2 upper RAM access to 511

    Manual states RAM 28 to 511 on 14M2 [peek & poke] - how is the upper part - 256-511 - accessed - by word variable? By SFR switch? Thanks...
  8. premelec

    Hserout & Sertxd on same pin OK 08M2 14M2 ?

    Manual 2 says cannot use Hserout on download Serout pin [p94] - however manual 1 shows same pin for Sertxd and Hserout on same pin in diagrams [page 10]. Is this just a manual error? I'm about to try a bunch of stuff I haven't done before and need to spit out a lot of data fast.... thanks...
  9. premelec

    PWM to DC Dual DAC LTC2644 interesting...

    LTC2644 comes in 8, 10, 12 bit resolution and converts PWM to DC FAST - 10us or so I think. Could be useful - has internal reference voltage. There's a quad part too LTC2645 . Just another possibility in our designs.... so many chips so little time...
  10. premelec

    Some way to drive WS2812 LED string?

    It appears that the frequency required to drive this one wire RGB chip may be too high for PICAXE to retrieve data and make up drive pulses though I'm not too clear on just what is necessary from the data sheet [other than zeros are short pwm and ones are long pwm pulse]. It did occur to me that...
  11. premelec

    Download circuit obsolete?

    New manual 1 shows download cicuits with "(NB: Obsolete, for info only)" shown - what's up?
  12. premelec

    AXE133 Firmware with 20M2 & 2x24 display?

    I notice the AXE133 firmware mentions 16 and 20 line calls - however I have 2x24 line display - will it work specifying 24 line? I have 20M2s and expect they are ok instead of 18M2 - thanks...
  13. premelec

    MAX7219 Current draw with digits not showing

    I have an 8 digit LED unit from Ebay and the Mysterious Orient which has what seems very strange current draw... e. g. if I blank each digit and then insert 1 2 3 4 5 6 7 8 the current is about 200 ma not changing much with digits added [with low set PWM - 56K R current set] - then the mystery...
  14. premelec

    MAX7219 Blank instruction?

    I'm using Westy's sample code for learning about the MAX7219 - I wonder if there is a single instruction than blanks all digits [I've got an 8 digit display]. I'm using this for now: FOR Idx =1 to 8 Register = Idx ; digit position Data_7219 = DigBlank ; 15 will blank the digit in code B...
  15. premelec

    How to delete PMs individually?

    I can't find a 'delete checked messages' button - only delete all in my sent and inbox... Please inform me!
  16. premelec

    RS232 from 25pin parallel port?

    My old computer died and I fired up another old computer which doesn't have D9 serial but does have parallel port D25 - showing up as COM3 and works on a printer... I tied wiring a stereo plug to 25 Pin 3 - 2 - 7 RD-TD-SG [2-3-5 RD-SD-SG ON D9] - didn't work - I tried reversing 2 & 3 and that...
  17. premelec

    5.5.6 Editor patch not working for me

    I tried running the 5.5.6 patch in my program files editor place and it comes up with a screen that says 5.5.6 [with the usual look to it] but stalls out there. Editor doesn't come up - XP SP2 system. No error messages... 5.5.5 still runs ok when I do a few 3 finger dances to get rid of the...
  18. premelec

    ARRL includes PICAXE in new book

    I'm happy to see that the ARRL has officially recognized PICAXE's existence in a new book: http://www.arrl.org/shop/Ham-Radio-for-Arduino-and-PICAXE/ Has anyone seen this book yet? I'd be interested in a review... tks...
  19. premelec

    OT - One time microchip fireworks !

    http://www.edn.com/electronics-blogs/anablog/4376597/Happy-4th-of-July--Exploding-the-microcontroller?cid=EDNToday
  20. premelec

    RFIN "simple" question

    RFIN examples show the necessary 8 bytes received as b0 b1....b7; understood... however is it ok to receive, for example b0 b0 b0 b0 b1 b1 b1 b1 to conserve variable use and receive only two new values? I'm not up on how the Manchester code works... and if it's ok to keep replacing the same...
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