Chip
According to paul, if you have two losmandy mounts on the same network , you can get the same mac address. You have to go into the web server and manually change one of the two mac addresses. I had a kind of fuzzy idea of how a mac address is assigned and thought each mount would be assigned a unique mac address. It appears they aren't unique and hence the problem with Gemini telescope.
Chuck
On Friday, November 1, 2024 at 10:27:24 AM PDT, Chip Louie <chiplouie@...> wrote:
On Thu, Oct 31, 2024 at 02:45 PM, crocco1250 wrote:
This is for Paul kanevsky.? I have two losmandy mounts,? a 2005 g11 with older servo motors and a g11g SLW,? both with Gemini II mini with L06 and servo motor quadrature upgrades. They both "talk" via a linksys wireless router and LAN cable to on-board mini computers (eagle and mele quieter 4c) to my laptop via remote access (win11). I recently had both fired up and communicating via two different laptops.? Gemini telescope would only work if I used the UDP setting (unverified data packet). If I tried using the HTTP setting for both mini computers (one 192.668.0.220, the other... 221), Gemini telescope couldn't resolve which command went to which mount, i.e., both mounts got the same command.? When I switched to udp,? problem resolved.?
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Now to the weird part.? So I've left my Gemini telescope on udp on startup.? Last night,? I was getting target unreachable on the handset in the 2005 mount (single mount).? I went out and was able to move the mount to the target (m32 in this case,? with the scope pointing east via the handset). While trying to figure out the problem,? the mount went to limit. So I commanded the mount to CWD. The Gemini telescope slewed to CWD and telescope app showed limit and wouldn't allow me to enter track via my laptop.? I reset both the Gemini II and telescope app but it wouldn't let me go from CWD to track.? I finally set Gemini telescope to HTTP with the handset address (....220) and no more issues!!!? This morning I thought I should have looked at the ARP table but didn't.? Weird behavior.? Your thoughts??
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Chuck
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The networking term UDP stands for User Datagram Protocol.? Like many computer terms it is an arcane term made up by dudes in garages wearing pointy hats.? AFAIK UDP packets are verified using checksums but the handshake protocol does not wait for receipts from the receiving device(s).? Because of this it is a faster protocol due to the much lower network overhead but UDP can lose packets if the receiver is not ready to accept data.? IME it is very reliable in use with Gemini controllers as Gemini Ethernet is relatively slow by modern standards.? If you are experiencing dropped packets or data loss once the Gemini is talking to the computer this is not likely the fault of the use of UDP protocol but some other layer in your network.? ?
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Chip Louie Chief Daydreamer Imagination Hardware?
Astrospheric - South Pasadena, CA?
