MicroPython Forum (Archive)

That's precisely what I needed.

Thank you!

I installed the vagrant build environment to include modules like sdcard in my firmware using this guide. It works great! https://learn.adafruit.com/building-and-running-micropython-on-the-esp8266/build-firmware This is the Adafruit fork of micropython on GitHub. It includes the 'unix' directory whe...

Update: I need to write positive ppm to slow the rtc down, not negative (-26.68) as I posted previously. The PCF8523 register address is 0x0E, but what bits to actually write into it for my calibration I haven't determined. I don't understand the tables and mode starting on age 28 of the datasheet.

OK, that makes sense.

Thanks Robert and Dave!

Thanks Robert. But how did you know to use "0.000,011,6" to begin with?

I was trying to understand how 11.6 ppm was determined, given the other values were known.

I'm trying to understand the calculations used to arrive at 11.6ppm in the following statement: There are 86400 seconds per 24-hour period, putting each second at about 11.6 millionths of the 24-hour period. That puts an error of 1 second per day at 11.6ppm. Given a crystal with oscillator frequency...

I've been reading about RTC crystal drift and calibration. I've also received some good information on the Adafruit forum in this thread: https://forums.adafruit.com/viewtopic.php?f=57&t=108693 I don't have a truly accurate measurement of drift in ppm as discussed in this thread: http://forum.microp...

Hah - I actually came across some very old code I wrote, on a project where it was important to keep it clean, maintainable and robust. I was actually surprised to see that I thought it looked pretty good, even in hindsight. Some other stuff I've done - not so much! :lol: I recently moved to a diff...

Well, I will be embarrassed to show my code, I'm just learning sockets and am only slightly familiar with Python & MicroPython. But I'll see if I can strip that away from the other code, and post the basics. I found a lot of the documentation confusing for a beginner like me I need examples to lear...

Hi NTL, Your project sounds great. I'll also send out a "thank you" to the MicroPython community for all of the hard work and excellent results. During local daytime hours, once an hour the ESP attempts to upload the file to a Python socket program I have running on my computer. If it can't connect ...