| stig | Posted: 3 Jun 2025, 04:04 PM |
|---|---|
 Member Posts: 1 Joined: 3-June 25 |
Hi - Here from mr. Geerling video - and pretty impressed by your clock. If you are up for ideas for the next version here is a few: 1) add a 433mhz transiver: gives you the possibilities to add "slave" clocks with the same precision but without the need for satellite module. Same precision can achieved by doing a ping/pong style of timing on the slave to measure the time taken. Would also allows others to make gadgets take advantage of the time without implementing a full blown network stack. And perhaps the slave clocks could be made cheaper. 2) Add some sort of ethernet connection: make a NTP and PTP server. If the connection would be wired, then clock could be powered with POE ------------- |
| [top] | |
| mit | Posted: 3 Jun 2025, 10:59 PM |
 yeah whatever Admin Posts: 618 Joined: 4-May 16 |
Some kind of slave system might be worthwhile, I'm not sure if 433MHz would be the way to go given how unreliable and noisy it is, you'd have to write your own protocol and make it immune to interference. I experimented with making a wifi NTP device, this was quite a few years ago using an ESP8266. I wanted to see if I could get sub-millisecond accuracy despite the wifi. I ought to publish that at some point. I think I got it to discipline the oscillator of the ESP chip and managed to make it mostly stay within a millisecond or two. A big problem is that most of the NTP pool is not as accurate as it claims to be, some of the supposedly stratum-1 servers were off by half a second. I remember the cloudflare servers were pretty good and made it only poll them. I agree that a PoE precision clock would be pretty neat. ------------- |
| [top] | |
| Catsmith | Posted: 6 Jun 2025, 05:12 PM |
 (Catsmith/Thecatsmith/Thecatsmith4you) Member Posts: 1 Joined: 6-June 25 |
From what I can tell it seems like the mark IV uses a micro-usb port, (based on pictures and videos ive seen) And I personally would have preferred it to be Usb-c but just like the fact that the version III that i have is 24 hour Instead of 12 hour, the fact its micro USB is insignificant enough for me to not be dissuaded (spelling? idk) from purchasing a mark IV (when possible), i only noticed that it was 24 hour after receiving my mark III ------------- |
| [top] | |
Sign in to post a reply.