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For me, the wireless probe setup is the way forward. Stripping the temp hardware from the head unit and pushing it to the remote makes a ton of sense. Especially when you can then permanently install the LMremote electronics package at the device being controlled at a relatively low cost...

What iron are you using? Also, sometimes you need to add solder to the connection to suck the rest of it out. It's counter-intuitive, but works. The larger surface area of the extra solder allows more heat into the joint.Once you bring it up to temp you can then quickly add the braid and suck...

OK. Dave Peart mentioned that he only had 1 probe working wireless. You should bring this project up to makerfaire in NYC this September. People would love it.

Any chance that we'll get wireless servo support and all 4 temp probes? That would be supersweet.

I desoldered my RCA. It was a pain. :( Even once you get the solder out of the joint they will still have some solder in there. If you have a panavise handy that is the way to go. Put the Pi in the vise and while heating the pins slowly start to wiggle the connector out. I't'll be slow...

Darren, cut about an inch of braid off. Take that and use the iron to hold it against the joint. The solder should come right out. Once the braid is saturated or the joint is clean then grab the braid with a pair of tweezers and pull the iron and braid away from the joint together.

I should have put more into that answer. :( They are the same value, but not the same tolerance is needed for R20. R5, 16, 17 and 18 are all higher tolerance resistors - their true value is very close to 10K. R20 can be a lower tolerance resistor - a 5% or even 10% resistor would be fine...

No. Those 1% resistors are for the probes. If you forgot to get the 10K resistor, just pop down to radio shack.

So I went and tossed thermocouple support in. I used the standard connectors, but was thinking of using screw-down terminals instead. And it should be hand-solderable after. so it can be added if/when it's supported in the code.

nah. homebrew. gonna cut a stencil with my vinyl cutter. we'll see how that goes. gonna give itead a try. their boards are pretty good, but not as nice as laen's, but you can't beat the price. we'll see how they do. i was gonna toss in thermocouple support via MAX31855 on P11, but didn't.

SMD HM4 with servo and blower outputs. https://drive.google.com/folderview?id=0B6yPgtXXa9tXV2c4SU55c0o2aDg&usp=sharing HM4 was just too crowded for a Servo output. Take a look, and if I made a mistake let me know. Otherwise I'm sending them out to fab @ the end of the week. I'll make a...

Bryan, I think that is the real direction to go in - interface the peripherals directly with the Rpi and communicate wirelessly to the IO board at the appliance being controlled. I like it. Simpler, cheaper and more flexible. All together it's a win-win. There should be enough GPIO to...

I don't think this is a settled item just yet. I'm right in-line with your experience. They can be difficult to use with menus, but can't be beat for quickly changing values. And yeah, the standard ones are a bit goofy - too long. I'll try to find a form factor that is appropriate. I'm...

I've uploaded the Beta9 files to my google drive. the x86 version https://docs.google.com/file/d/0B6yPgtXXa9tXSUNJb2RRcVp1c3c/edit?usp=sharing the x64 version https://docs.google.com/file/d/0B6yPgtXXa9tXaFEtclVzZzh6NEk/edit?usp=sharing You should be able to open the .123d files in inventor...

Ralph, none of the images so far show the shield with the Rpi. The newest iteration has a direct connection to the Rpi, which is underneath the Arduino Mega. This minimizes the physical footprint. I'll post a pic of the shield tonight. I don't know what the full power draw is, but we can...

I should chime in. I think the main reason for opening up this thread at this point to really to put the design out for comment. I really want to hear from Bryan and the community what people want to see done with the additional IO available on the Mega2560. If you're not familiar with the...

Off topic but really cool! I remember tackling some of this in an operations research class a while back - optimizing a region for min and max exposure to a radiation beam.

First off, thanks for the explanation - I can appreciate this effort so much more now. Makes my tinkering seem...insignificant. I guess they do PET and/or CT to find the cancer, then use an algorithm to generate the nozzle and compensator? Is it just a single pair of nozzle/compensator and...

Tom, what's really cool is that you're able to apply this to your real-world job. How did you get involved with CNC at work? Trying to reduce costs?

That 3A draw is going to be tough on those 8825's. You might want to step up to these drivers: http://www.piclist.com/techref/io/stepper/THB6064/index.htm I've been wanting to give them a shot but haven't had the need to do so. I'm going to use these on my leadscrew CNC once I get around to...