Gina

Yes, I have indeed seen that video and tried it without success - the sensor was dud afterwards I also tried this several time in different ways. I think I succeeded once but managed to destroy the sensor at a later stage. It's all written up on here somewhere I think it quite likely that I might have another go at 1100D sensors some time in the future

I think I can see at least one, maybe two or three, broken gold wires on the right. It's so very easy to catch these however much care you take as my graveyard of dead sensors will testify

One design of a home made filter wheel in contained in this thread of mine I use optical sensing. EDIT... And this thread shows an earlier filter wheel which I built before I had a 3D printer Various drive and sensing systems were discussed.

I'll try and find the epoxy I used. ATM I'm totally distracted in sorting out my main imaging rig and problems with power supplies and have not been working on this project for quite some time now. I haven't forgotten about it and plan to get back to it once I'm up and running on my imaging systems using Atik cameras. For me this project is mostly academic I'm afraid but there is the prospect of producing a half-frame size imager that's good enough for worthwhile imaging in parallel with my high spec Atik setup.

Nice job there and well explained - a joy to read - thank you

That's superb - very neat indeed - well done

Often - yes I hate USB! I get it a lot with Arduino Nanos for some unknown reason

I have a single speed Crayford focuser on my MN190 and using a 5:1 ratio timing pulley system. I removed the knob and put a 60t MXL timing pulley on the shaft with a 12t pulley on the 28BYJ-48 stepper motor. I found the step size quite small enough for accurate focussing

This stepper has a built in 64:1 gearbox. I've used several for focussing and found them very good

This would seem to be the case as the Arduino IDE can't tell which version it is or it would detect it automatically and we wouldn't have to enter the version by hand.

The type of Arduino is printed on it

I save such things in non-volatile RAM in the Arduino. Sure you're well aware of that though

I've just searched thorugh all the sketches I have used since I got this desktop several years ago and they all use either ID codes found by running a separate sketch or by searching 1-wire devices within the main sketch. All I can think of is that was mentioned in a post on here - either started by me or in reply to someone else's. That's "a needle in a haystack!" However, I did come across a reference to an Arduino 1-wire library with the facility to skip the ID selection :- http://www.pjrc.com/teensy/td_libs_OneWire.html This doesn't "ring any bells" - I thought I got this from somewhere else but this seems to be one answer

I'm still searching for that code, so far without success Been trying to think which of my many Arduino based projects this would apply to. I ought to produce a page with all the Arduino sketch snippets. I really need to get myself better organised

Not ATM I'm afraid - the USB cable has been knawed through I'll have to repair it - yet another job to add to my never ending list

That's very useful if you have several 1-wire devices connected and I do the same but with only one device you can use different code that bypasses the device ID. I think it's in the Arduino web page or I could find it if you like.

The ball bearings came today so I'm hoping to install the new wheels on the north side shortly - maybe tomorrow

OK - Found the Fotos Firstly the wheel carriers. Design model and printed part for the south side. These take an axle (a smooth shanked SS bolt). Modified design to do away with axles for the north side which is much lighter than the south side. And now the wheels. Cross-section of wheel showing where the ball bearing fits in the middle 3D print design for the wheel halves. And the printed wheel parts, bolted together with the ball bearing in between.

Hmm... I thought I'd posted more in this thread as I have progressed this project a fair bit since the last post above. I have new 3D printed wheels and wheel carriers. Wheels are 100mm OD with ball bearings fitted between printed halves that are bolted together. The carriers take either axles or the bearings directly and ledge under the timbers that form the ROR carriage. As with the turned wheels above these have a V grooves and run on inverted aluminium angle. 3D printed carriers provided an easy way of getting the axles at right angles to the rails. I'll see if I can find the photos. I'm posting now as I've done a little bit more to this today. Progress has been delayed due to mislaying a couple of bearings wanted for the north side - the south side is finished. This morning I finally gave up on trying to find the missing bearings and ordered some more. Then this afternoon I removed the winch that I was using to pull Tim's wheelchair up the steep ramps outside the house, ready to install in the obsy to pull the roof on and off.

That should be alright

Adding ASCOM control to my focuser systems is definitely on my list but ATM I really feel I must finish some of my other projects first I already have too many on the go and the manual remote control is working pretty well.

Very sensible I'm only using 1-wire stepper control to reduce and simplify the kit at each camera. It's mainly the built-in ID code in the 1-wire devices that make the difference - I can stick them all on the same pair of wires. No need for special selection circuitry

I don't know about ascom-based programs but I used an Arduino Nano to control cooling for a cold finger cooled 1100D DSLR a while back with an LCD display running off digital I/O lines and using a DHT22 to read temperature and humidity near the image sensor to display dew point. Cold finger temperature was read with a DS18B20. The serial I/O was assigned to computer readout. BTW - you can use 1-wire to control the stepper motor. I am doing that for my multiple CCTV project for pan & tilt control though I haven't written the Arduino sketch that controls the whole system yet. It's yet another project in progress

Brilliant project Good luck

I said I'd get back to this in my CCTV thread so here goes... I have the wind direction encoder base printed.