Search results

  1. C

    20m2 count pulse is off expected count

    Found the problem. I removed the screen update routine after each calculation. The problem went away after I placed them back in. Thanks for your advice.
  2. C

    20m2 count pulse is off expected count

    It's been counting fine for several days. I have another Geiger counter which uses 20m2 (@32Mhz) and the same counting routine, it's still working fine after 10 years. I'm just building a smaller version using a128 x 64 OLED and without all the bells and whistles I have on the original Geiger...
  3. C

    20m2 count pulse is off expected count

    Time for some help. I'm counting pulses using an 20m2. Every thing was going fine for a couple of days and then the count was suddenly off by about 300, plus the count started jumping around about +/-40 counts. I'm using a pulse generator to act as a counting source with a frequency counter...
  4. C

    Problem getting a 18m2 program to run on a 20m2

    The program say's it has downloaded fine. Any way, I've decided to go with the an 18m2 since I won't be using all the selector switches I used on the last Geiger counter. I'll just press one button, several times, to get to the selected screen, which is what I should have done on the first...
  5. C

    Problem getting a 18m2 program to run on a 20m2

    The program runs fine on an 18m2 but when I down load it to an 20m2 it doesn't run. It's a simple clock program and I've made sure the SCL and SDA are on the proper pins of the 20m2. There are no other connections to the 20m2, just the SCL and SDA. I've Tried different setfreq, but that has...
  6. C

    Clock program using an .96 (128 x 64 pixel) isc display, explained.

    This program is fully commented, explaining how characters are created and transmitted to the display. A clock program is used to do this. The time, date, day and AM/PM are incorporated, along with a line of text. There are, no doubt, other programs much more efficient than this one, however I...
  7. C

    Having problem with DS1307 year.

    That fixed it. Now the clock is complete. Thanks for your help.
  8. C

    Having problem with DS1307 year.

    I skipped the "day" when setting and reading the clock. That's what screwed me up. I put it in and it's working fine. Thanks for every ones help. However. One last problem. I'm running 24hr format and changed the software to read in 12 hour format and that's fine. I need a way of putting AM or...
  9. C

    Having problem with DS1307 year.

    Picaxe 18m2, DS1307 (stand alone chip with crystal), communicating to display and DS1307 over 12c. The seconds, minutes, hours, date, and month all read back properly, however the year only shows the last digit. If I set the year as $20 I'll get one zero (lsd )read back to the display. What's...
  10. C

    12c communicating with RTC and a 128 x 64 OLED

    I'll have to remember that one. I'm running at 4Mhz, so i2cfast or slow should be ok.
  11. C

    12c communicating with RTC and a 128 x 64 OLED

    This is going to sound strange, I had the 18m2 speed set at 8Mhz. and the RTC and display commands at i2cslow, which is what they are suppose to be. I was getting desperate so I changed the clock speed to 4mhz. and changed ONLY the RTC commands to i2cfast and everything worked fine. I then went...
  12. C

    12c communicating with RTC and a 128 x 64 OLED

    Yes, the display works when attached to the SDA and SCL without the clock chip connected and with two external 4.7k resistors on the bus, which tells me the display doesn't have built in resistors. It's just the clock integrated circuit no module, no battery, no resistors. I had to supply the...
  13. C

    12c communicating with RTC and a 128 x 64 OLED

    I've got an 18m2 connected to an oled (128 x 64) display and also a DS1307 clock (just the chip not a module). With ONLY the clock chip connected to the bus the clock portion of the program works fine (display portion is disabled). I can see the seconds, minutes etc. incrementing on the debug...
  14. C

    Picaxe 18m2 to a 128 x 64 oled

    This program was originally created by paraglider_nut. I added more comments and also a variable data section, wich I believe was created by Hippy. I also added a "top of page" subroutine, as the program did not always start at the top of the display and was also scrolling left to right, one...
  15. C

    Problem with 12c to oled display 128 x 64 display

    I copied the attached program from the forum. The program was written by paraglider_nut. Being new to oled displays there are a few lines of logic I don't understand. I went through and commented what I could understand. All the lines I don't understand I placed a question mark after them. To...
  16. C

    DS1307 problems

    Ok. I got it working on the "stand alone" DS1307 chip. When I get some time I'll try it on the DS1307 module. Attached is the working program with the conversion. Now what to use it on, clock, data logger? Thanks for all the help guy's
  17. C

    DS1307 problems

    OK. I left the power on the chip and then downloaded and the problem of 255 in the b registers is gone. Apparently I was so used to cycling the power before a download on the TinyRTC that I did it with the stand alone DS1307 chip and it wasn't required. I think the TinyRTC may be more difficult...
  18. C

    DS1307 problems

    I gave up on the TinyRTC module and I'm simply using a DS1307 chip and an external crystal. I still have the 255 going into all the b registers. Now that I think about it, the only thing in common with the TinyRTC and theDS1307 chip is the fact that I have to kill the power to the chip, then...
  19. C

    DS1307 problems

    I was wondering if anyone out there if could give me a hand with this. I connected a picaxe 18m2 to a DS1307 module. Downloaded the program and ended up with nothing but 255's in all the memory locations. I read somewhere in the forum that the DS1307 might not be working, if that happens, so I...
  20. C

    08M strange power up

    If the resistors are not there, what exactly is the picaxe doing when first turned on? It seems to run the program after several seconds. Is it waiting for a time out, on the serial port, if no data on the serial port appears?
Top