Decided to give StellarMate another try on Rpi 4 with a fresh install of 1.5.1.
Using the iPad app, I get an error when attempting to access the desktop. The iPad app is version 1.9.13. I think I heard there is a newer iOS app, but my version is the latest on the App Store. The error occurs both when I am connected to the hotspot and when connected to my home WiFi.
Attached is a screen shot of the error. I had the same issue that prevented me from using 1.4.6. I have cleared the browser cache on my iPad, as suggested on the Facebook group.
Upgraded to 1.5.1
Ran a 60x240s sequence. All on RPI4 (as quoted below). Not a single problem. Really nice!
Well, there was one issue which is not RPI4 or 1.5 specific and has been there for quite a while.
Bias frames. (this was reported before).
Often, Ekos takes bias frames but they are completely empty (no signal whatsoever).
Usually this happens on the first run, when switching from Lights or Darks to Bias.
Switching back to Lights and taking a few exposures makes Bias to behave normally.
Couldn't quite figure out the exact pattern.
At least I know now that the issue exists and sort of know how to get around it.
RPI 4 B (4Gb) with SMate
Askar FRA400, TPO RC6, Nikon D5500 full spectrum (with IDAS D1 clip-in filter).
ZWO ASI120MM Mini on ZWO 30F4
ZWO ASI224MC-S on Orion 50 mm f/3.2
ZWO EAF x 2
Last night I had to position my mount slightly further away from the house which meant that my wifi connection from my laptop running Kstars and INDI on the Pi was not strong.
I lost connection a few times and focussing was impossible (too long required for the download).
I had an old Airport Express (mini router/Access point) which I have now connected directly to the Pi with a cable. Seems to have solved my wireless woes.
I think the Pi wireless access point is very weak and only really seems to work if you are within a couple of metres.
WO ZS 61
Edgehd 8 with Celestron OAG
Stellarmate on RPi 4
294 mc pro
224 planetary cam
174 guide cam
Sesto Senso focusser
QHY5II-Mono guide camera
EOS6D - not modified
That honestly baffles me. I imaged again last night and my rig is ~60ft away from the WiFi extender I am using for coverage in my backyard. So definitely not ideal conditions, with distance, extender and all.
Nonetheless, the INTERNAL 5GHz WiFi of the Pi4 never had any trouble whatsoever with that constellation.
I get consistent connection speeds of ~ 390 Mbs, which makes for a very snappy response via VNC. I am running KStars on the Pi4 directly.
I can only wonder whether the poor connection many people here are describing is the result of either a subpar power supply that cannot pull the Amps the Pi4 needs to run at full speed, or whether it is somehow related to the OS. I am using Ubuntu 18.04 as my OS on the Pi4.
Maybe the key is the power supply. I am using the one that came with the Canakit when I originally ordered the Pi4. Rated to 3.5 Amps.
@rishigarrod: Just popping prior post on issues between USB3 and Wifi at 2.4Ghz. It's not clear whether you're using the Pi4's USB3 ports, and you didn't say whether your wireless is using 2.4Ghz. If yes to both, it's most likely that you are experiencing RF interference. This has nothing to do with SM 1.5. It's solely a function of Pi4's USB3 close proximity to the internal wifi antenna. See this prior post for details and workable solutions: www.indilib.org/forum/general/6576-pi4-u...erference.html#50509
FWIW, after adding a direct ethernet cable from laptop to Pi4 (lured by speed improvement), I'd never go back to wireless now unless it was an absolute emergency ! Clear skies...
p.s. For Jo, I'll note that although power supply can be a problem (lots of prior posts on poor power issues), when it's Pi4, USB3, and wifi at 2.4Ghz, it's almost certain to be RF interference (and NOT power). Similar symptoms though, so it can be very confusing. Folks need to take note as they migrate to Pi4 with USB3 since 2.4Ghz wireless is everywhere, and people don't necessarily think to take action to switch over to 5Ghz.
Thanks, Doug! I had forgotten about the WiFi interference problem. Never had it, since it felt natural to connect via 5 GHz only. 2.4 GHz WiFi is just too slow. About 6 times slower.
Anyway, just to let everyone know not to give up on the internal WiFi of the Pi4. It works great on 5 GHz and it is not weak at all.
Atlas Pro AZ-EQ, ASI1600MM-Pro, ASI120MM-S, ES102ED, WO-Z61, Nikon D3300, ASI-EFW, ZWO LRGB,Ha,O3,S2 filter set