QHY QHY5L-II problem and solution

problem with USB dropped connection, Windows do not recognize

2015:

2017

USB3 connectivity problem on SGL

hkastroforum

hkastroforum 2

>> PHD2 嘅 2.6.3 直情辨認唔到 QHY5 嘅 guide camera，官方網頁已經講咗唔支援??? 找不到PHD2有此說法???

QHY5 guider hkastroforum

Tom Van den Eede 幫QHY(合作)寫過晒所有(QHY5, QHY5V, QHY5T...)driver及program，現在已經無chipset的問題。 Tom連capture program都寫過晒，唔用QHY的program(點解? 用過QHY的program你就知點解)。Tom的driver及program要另外download，qhyccd.com只係有條link指過TOM個website astrosoft be ( link now broken, since 2012)

abracad100

sina blog

COMSDLL.DLL 版本問題

QHY5主要是以COMSDLL.DLL這個檔來作驅動，但是這個檔整整有六個版本！目前可以成功無誤的，是它的日期為2007.7.31日與2007.8.1這兩個版本可以跑得很正常。GUIDEMASTER網頁上的PLUG IN，它CMOSDLL.DLL是2007.8.6這個版本，我試了它的CALIBRATION中斷時，會亂跑，也不太穩定。

solution(2008):

統一的一個DRIVER都全部(軟件)可以用

2010 QHY ended cooperation with astrosoft, so Tom van den Eede stopped update ASCOM driver development for QHY5

the USB chip seems to be Cypress EZ-USB FX2 on QHY5 . seems to be how good the USB driver is written

shouldiremoveit

astro free bbs:

flightmouse

astrofree bbs changed use CCDLabs driver

suspected that this related to PID tuning(overshoot)

discussion in indi forum

how to solve:

highpointscientific : PHD2: use ASCOM drivers instead of native drivers

imufu faq

conclusion:

1. stop buying a new 1st gen QHY5(driver no longer found in QHYCCD website),in case you have one, you pretty much rely on yourself ( for Windows users). But you may have some luck use with Linux, or INDI, or use it as Linguider, lin_guider (older), lin_guider by ploki ( newer) as pulse guider, or PHD

2. QHY5II check QHYCCD official website on driver status and support, it seems better support on Win 7 and Win 10 nowadays and better ASCOM drivers. choose those with QE > 70%

2. better choose 3rd gen QHY5III( higher QE, more pixels, good for planetary and guiding)

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