Recent content by captnemo

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.

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...

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...

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...

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...

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...

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

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...

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...

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

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...

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...

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...

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...

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...