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Re: Gemini-2 momentarily went haywire
The diagram is not that useful.? Text is easier if you ask me. Step 1.? Turn on mount and see whether RA or DEC has a runaway slew Step 2.? Swap cables at the Gemini plugs.? RA or DEC? Step 3.?
By papagordygrapes@... · #71093 ·
Re: Gemini-2 momentarily went haywire
In the Gemini1 the decode of the signals from the motor encoder is done in an ATF16V8 GAL. In the Gemini-2 it is done with a PIC (which one depends on whether it is a G-2 or a G3 == G2 Mini). David
By David C. Partridge · #71092 ·
Re: Gemini-2 momentarily went haywire
Brian, You mentioned a test and a diagram, but I am not seeing them attached anywhere. Could you repost or direct me to where this is? Thanks, John
By John Kmetz · #71091 ·
Re: 76 second RA periodic error fixed with Belleville washer
Reading through the white paper the following can be summarized: 1) A 76 second error is due to the bearings hanging up momentarily 2) A 76 seconds error can't be removed with a PEC curve since it
By John Kmetz · #71090 ·
Re: Gemini-2 momentarily went haywire
Pyle PSL92X regulated power supply.? 13.8V @ 5A constant (7A surge).
By papagordygrapes@... · #71089 ·
Re: Gemini-2 momentarily went haywire
sorry now all, the first two -- Brian Brian Valente portfolio brianvalentephotography.com <http://brianvalentephotography.com>
By Brian Valente · #71088 ·
Re: Gemini-2 momentarily went haywire
these all sound like power issues what are you using to power your mount? -- Brian Brian Valente portfolio brianvalentephotography.com <http://brianvalentephotography.com>
By Brian Valente · #71087 ·
Re: Gemini-2 momentarily went haywire
Hi Michael, What exactly is the detector unit in the Gemini?? I've done work with rotary encoders before and afaik they just use digital GPIO pins. Unfortunately the troubleshooting diagram is only
By papagordygrapes@... · #71086 ·
Re: Gemini-2 momentarily went haywire
Hi John they are all equally plausible, which is why you want to run the test i outlined to determine which is at fault. I've read your thoughts about "keeping it at bay" but I really think you are
By Brian Valente · #71085 ·
Re: Gemini-2 momentarily went haywire
The encoder theory seems plausible to me. This problem started for me right after I had swapped the outer RA and Dec drive assemblies (outer plate with the two drive gears, gear box, motor, etc. and
Re: FINAL-Definitive Answer regarding Start
Just Warm Restart and continue from where you left off, and that could be any mount position, not just CWD. *** This *right here* is why I say "use Warm Restart!" - even though I *always* park at CWD
By Derek C Breit · #71083 ·
Re: FINAL-Definitive Answer regarding Start
THANK YOU PAUL!!!? Perfect description and going to use this as my master config now!!!
By Russ · #71082 ·
Re: FINAL-Definitive Answer regarding Start
Here is a more detailed explanation that agrees with the manual: https://gemini-2.com/hc/index.html *Warm Restart* is meant to be used when nothing's been touched or moved since Gemini was turned off.
By Paul Kanevsky · #71081 ·
Re: FINAL-Definitive Answer regarding Start
For Gemini II, In my experience, the first. ?I suspect the second is just a misprint. By manual, are you referring to the website? JMD
By deitzelj · #71080 ·
Re: 492 question
492 units can use 12-18v DC power input you can use the current Losmandy AC/DC 15v power supply, for example Brian
By Brian Valente · #71079 ·
Re: Gemini-2 momentarily went haywire
encoder, but it's either wrong or inaccurate. or missing i.e., "still waiting for it to hit that encoder mark"
By Brian Valente · #71078 ·
Re: Gemini-2 momentarily went haywire
Thanks, Paul! A you say: a missing cable (like disconnecting it) the gemini says "motor stalled". And that is what I observe. A runaway motor would have to be caused by these: 1. bad optical encoder
By Michael Herman · #71077 ·
Re: Gemini-2 momentarily went haywire
Thankfully, that really is how it is programmed. When Gemini doesn't sense movement after applying maximum power to the motor, it will stall pretty quickly. That's what the stall message from Gemini
By Paul Kanevsky · #71076 ·
Re: Mount is Unparked when power is restored
?? -- Brian Brian Valente portfolio brianvalentephotography.com <http://brianvalentephotography.com>
By Brian Valente · #71075 ·
Re: Mount is Unparked when power is restored
It was set to cold boot. ?I changed it to ¡°Prompt if not Started¡±. ?Thanks
By Edward.villalovoz@... · #71074 ·