Update: Grabbed a BP104 IR photodiode and an IR LED, changed some code and hey presto, it works. Press Button 2 and the rotary magazine spins slowly and at the same time polls for voltage on Analogue Pin 1. The theory is a small hole in the magazine plate that aligns with two others, one on each sid...

Not a gun yet, just some bits on the bench. For my next trick I need to design and construct an alignment circuit, something to tell me that the drum is in the correct starting position for the stepper to index from. I am thinking of an IR photodiode hooked up as a voltage divider with a LED illumin...

Got it fixed, just needed to look at it with fresh eyes Thanks const int StepPin = 13; // the number of the Stepper Motor signal pin const int ButtonPin = 2; // the number of the pushbutton pin const int RelayPin1 = 3; // the number of the first relay const int RelayPin2 = 4; // the number of the se...

Hi All i also need help on an Arduino project for SF. I am prototyping a 25mm launcher that uses a stepper motor to index the magazine and then fire some relays to do the actual launch and reload. None of this codes is mine, it is all screen scrape and I will freely admit it is a long time since i d...

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I joined SF as an outlet for my interests in engineering, electronics, mechanics and tinkering with stuff. It satisfies all those. One thing I have noticed in my short time on board is the increasing trend, particularly amongst the non-US members to build something other than two lengths of PVC slap...

Would that go some way to explaining why for the last few days I am getting database errors when try to connect and PM's just sit in my outbox and never go to sentbox ?

For the last 48 hours the forum has shown me zero unread messages each time I checked.

It seems to have cleared up now

Evilvet how much should I be looking at spending to make one, and how accurate can they be? Let's start with the easy part first, how accurate. Assume you have a perfect system using the tolerances in my current machine. My ballscrews are 5mm pitch with double nuts, for the hell of it lets assume n...

You might start here http://www.spudfiles.com/forums/3d-printers-cnc-mills-t23563.html I've built 2 CNC machines so far and am contemplating my third as a conversion of a Sieg X3, once I can afford an X3. Happy to help if I can, might I suggest that further posts on the subject go in the thread I li...

Afternoon all. I have been playing with a technique in CAMBAM called Island Pocketing, the ability to leave raised "islands" on a machined surface. For simplicity I modelled a Lego brick, nice regular surfaces and it makes a nice desk ornament for the kids when finished. I also wanted to test out so...

every Kiwi wants to go overseas

Yeah, and most you end up over here

I always wanted to try Lusk, Wyoming,"known for being the county seat of the least populated county in the least populated state in the US". Also reasonable commuting distance to my final redoubt

I understand! Really I do. It's all very clear to me now

Couldn't resist. You gotta love a good epiphany at Easter.
I understand now

And only $77.95 USPS international shipping, sounds like a bargain
Not all of us on the forum have the luxury of CONUS purchasing

Indeed a fair point. It's frightening when you work out the air pressure on something as familiar as your dining table, in my case about 20 tonnes. What I am going to start with is this extracting against a length of 100mm PVC pipe. I ordered this to go with it I got the pump of reduced price and fr...

Thanks anyway, appreciate the effort