Quote:
Originally Posted by dtrewren
Hi Bram,
I will answer your questions no problem :
The kit version of SharpSky only supports one temperature sensor. The sensor can be plugged directly into the PCB using a three pin mini-din or can be wired to the D-type connector. However, as I say only one sensor can be fitted the firmware will detect only one probe (the SharpSky Pro unit supports two separate independent sensors).
The sensor is a DS18B20 three wire type, the wiring instructions can be found on the SharpSky kit website : www.dt-space.co.uk/SharpSky_Kit
The build instruction PDF can be downloaded from the website and sections 11 & 12 detail the temperature probe connections.
Power wise the unit will not exceed 1A at 12V even if the motor is stalled. |
Hi Dave,
Thank you. One temp sensor will be exquisite, I was just thinking of using the second one to record my newly fabricated DSLR cooler box.
Re: power, 1A sound fine.
Does the PIC recognise where the sensor is plugged into? Or is that a software option? (just skimmed through the manual).
Quote:
Originally Posted by wasyoungonce
Bam, I have a sealed DS18B20 sensor for you.
I was going to make them up to the 3pin DIN but if you want I can just send so you it to wire thru the motor DB9 and place as you wish. Or I can just give you a std non insulated DS18B20.
I have your PCBs all but made, just waiting for the gray encoder, DIN PCB sockets and few other small things.
I spoke you you about DC jack, aka you requested 2.1mm but I have not yet put that on so you can change your mind still!
Powering all devices is a real pain, I made a small distribution DC/USB hub so I can power multiple devices (and DSLR with +8V) and have a 4 port USB hub all in one. Things like this are invaluable to users and many users make their own.
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Hi Brendan,
Maybe sent the sealed temp sensor separate, thank you. I will most likely wire it through the D-type connector. Just wondering were to place the sensor for most effective focus temp compensation.
I like your USB/power hub, very nice.
Stick with the 2.1mm power plug, please (although I haven't made any head way with my power distribution). My latest idea is to have stereo sockets in be power box, and then the various leads with the stereo plug on one end and 2.1mm and 2.5mm (and 1mm? on the camera) plugs for the devices.
I have a few DC-DC converters (
http://dx.com/p/lm2596-dc-dc-adjusta...e-green-227553), which will be powered by a 12V source. They will be tuned to 8V (camera) and 5V (usb hub), and I will have a few 12V straight through. I've never managed to reliably get my guide camera (QHY5L-ii, video mode) to work through the usb hub, so I am running a second usb cable. Come to think of it, with the focuser it will become a cable paradise ... maybe need to rethink again
Would the SharpSky play nice through a USB hub?
thanks,
Bram