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View Full Version here: : 9pin to RJ serial


Tandum
23-05-2012, 11:46 PM
Is this a standard cable? I can not find the one for the qhy wheel and I now need it but I do have one for the eq6 handset and another for the robo focus. Are they all the same? If they are I can easily run one up. Anyone know?

Google does -> http://www.zytrax.com/tech/layer_1/cables/tech_rs232.htm#rj45

It appears it should be the same. With a bit of luck the qhy people have used google before building the wheel :rofl:

wasyoungonce
24-05-2012, 08:43 AM
Robin, QHY DB9 to RJ12 is a DB9 to 6pin 6Connector jack (6P/6C). There is very little (read "none") conformity on how the RJ pins are arranged, each mfger does their own thing.....which can be a real issue if you use the wrong cable.

Anyway, FWIW, I don't have a QHY wheel but I did make a Bluetooth unit to drive one and I used this config. Please double check with someone else.

Tandum
24-05-2012, 10:03 AM
Cheers Brendan, I'd expect they will be doing their own thing. I've asked for pins outs on their forums to check. Thanks.

wasyoungonce
24-05-2012, 11:04 AM
I believe Gamma/Theo also stock these (http://www.gamaelectronics.com.au/accessories.html).

Tandum
24-05-2012, 11:29 AM
I found mine down the back of the bench, on the floor hidden by boxes :rolleyes:

I plugged it in and it's a goer :D

wasyoungonce
24-05-2012, 02:40 PM
Ha...my little dog likes chewing my cables...so when ever I'm missing one...guess who gets the blame!:rundog::tasdevil:

I'm always making new cables!:mad2:

g__day
24-05-2012, 05:48 PM
You may find it handy to make your own... All you need is:

1. Crimping tool - around $50
2. Cheap multimeter - around $10
3. Wire and terminators (4, 6 or 8 pin sockets)
4. Serial cards (about $4-5)
5. Breakout boxes (around $8 - handy when the wiring gets tricky - multiple wires to one pin), or when you share the gear between say a Vixen Autoguider port (non ST4 pin layout) and Celestron gear, and you want a simple convertor

Also if you want to run cable for long distances - LAN cable (cat 5) is brilliant, tough, cheap, very hardy and well constructed. I find it more stable than flat 6 or 4 pin cable - just use the wires you need!