Search found 163 matches
- Thu Jan 09, 2020 7:25 pm
- Forum: Programs, Libraries and Tools
- Topic: GPS based NTP time server
- Replies: 2
- Views: 740
Re: GPS based NTP time server
Great idea. But whats about ready to use products like https://www.adafruit.com/product/3133 Looks like engineers think alike ;) Note that that board isn't a ready to use NTP server. It is the GPS module and the DS3231 synced to it in one breakout board. You will still need something running an NTP...
- Thu Jan 09, 2020 7:20 pm
- Forum: Programs, Libraries and Tools
- Topic: ntpclient - uasyncio based NTP synchronization
- Replies: 14
- Views: 2571
Re: ntpclient - uasyncio based NTP synchronization
...why are the RTC so inacurate?... It's hardware dependent. I believe the one on ESP8266 does not use a crystal oscillator, so it's wildly inaccurate. That on a Pyboard 1.x can be calibrated to within a couple of minutes a year. This is my understanding too. On the ESP8266 the RTC is completely dr...
- Thu Jan 09, 2020 7:00 pm
- Forum: Programs, Libraries and Tools
- Topic: GPS based NTP time server
- Replies: 2
- Views: 740
GPS based NTP time server
In addition to the ntpclient project I am also researching in the direction of building a "cheap" local NTP server, based on the ESP32 chip and a few other components. One reason being that commercial, GPS based NTP servers still cost upwards of $300. That looks wrong to me. The last components I bo...
- Thu Jan 09, 2020 5:30 pm
- Forum: Programs, Libraries and Tools
- Topic: ntpclient - uasyncio based NTP synchronization
- Replies: 14
- Views: 2571
ntpclient - uasyncio based NTP synchronization
Inspired by another thread about ntptime and its limitations I have created a new module, ntpclient . This is work in progress. At this point it works reasonably well on ESP32 and to some degree on ESP8266. Both implementations very much benefit from a local NTP server, which is rather simple to set...
- Thu Jan 09, 2020 1:52 pm
- Forum: ESP32 boards
- Topic: asynycio as_GPS
- Replies: 56
- Views: 8220
Re: asynycio as_GPS
Maybe it makes sence to create a german sub forum here? Ich fänd das toll I do not agree - Ich stimme dem nicht zu. A fragmentation of the forum is of no benefit for anyone. Information will get lost. I second that. There will always be the an exception made when someone needs help but cannot expre...
- Thu Jan 09, 2020 2:41 am
- Forum: Programs, Libraries and Tools
- Topic: esptool error when building esp8266
- Replies: 6
- Views: 1130
Re: esptool error when building esp8266
Docker woks to some degree and I love putting all sorts of things into containers (FreeCAD, KiCAD, Prusa-Slic3r, you name it), but in the end I went a completely different route for MicroPython development. A dedicated Raspberry Pi 3. It runs CentOS 7 and has all the tool chains for ESP8266 and ESP3...
- Wed Jan 08, 2020 10:41 pm
- Forum: General Discussion and Questions
- Topic: search for an inexpensive device to detect housebreaking
- Replies: 19
- Views: 3099
Re: search for an inexpensive device to detect housebreaking
Well, in that case we go with lead-pipe decoding. You get someone who knows the cipher, drug them and pummel them with a lead pipe until they tell you the secret. Its ugly, but it works.pythoncoder wrote: ↑Wed Jan 08, 2020 7:24 amApart from a one-time pad.no encryption that cannot be deciphered
- Wed Jan 08, 2020 7:16 pm
- Forum: ESP32 boards
- Topic: asynycio as_GPS
- Replies: 56
- Views: 8220
Re: asynycio as_GPS
PS Jetzt könnt Ihr sogar genau sehen, wo ich wohne... :roll: Wo in D-Land? Bis 2001 war ich 'n Hamburger Fishkopp. So much for that, now about your resource problems. The best way to gain RAM is to freeze the code. I still have to adopt the v1.12 method of providing a proper build manifest. Still t...
- Wed Jan 08, 2020 3:04 am
- Forum: General Discussion and Questions
- Topic: search for an inexpensive device to detect housebreaking
- Replies: 19
- Views: 3099
Re: search for an inexpensive device to detect housebreaking
If you want to have better security ... Security has been, and always will be, about creating an imbalance between the possible gain and the effort plus risk involved to get something. There is no unbreakable lock and there is no encryption that cannot be deciphered. It is just a matter of how much...
- Tue Jan 07, 2020 7:37 pm
- Forum: General Discussion and Questions
- Topic: search for an inexpensive device to detect housebreaking
- Replies: 19
- Views: 3099
Re: search for an inexpensive device to detect housebreaking
I'm pretty sure that the window break detectors were a purely mechanical device. Normal alarm system practice is to use a normally closed contact. ...I think a vibration sensor should not have more demand for power, so an 8266 deep sleep design should be possible... Alas I have no experience with E...