What chip do I have? (Page 1 of 2)

There are 2 different boards that have shipped with the SD3. The old on is a Sanguinololu with an ATmega644P the new board is a Printrboard derivative and it uses an AT90USB1286.

I think he was thinking PID Tuning on the stock heated bed which is done by enabling a couple options in the firmware and running autotune.

http://www.soliforum.com/topic/1720/mas … nable-pid/

Oh wth, that is ridiculous. lol ... 0 to pile of plastic in 1.2 seconds. I will slink back to my corner now. :-P

Thanks for the Replies.
I am very new to this whole thing and have been trying to just dig through the sea of info to save everyone from having to answer the same questions over and over.
The bed which really would never get to temp from the beginning was not acceptable.
I ordered a 500W AC silicone heat pad from McMaster along with a solid state relay.  Using the current set up with bang-bang works fantastically and has produced many good prints.  I have found that a temp of 107 keeps things sticking very well.
The problem is not so much a problem as is a concern that in the 5 seconds it takes for bang bang it will easily run up to 117.
Even at that temp it has caused me no issue.

If I were to do PID tune for the bed would that not increase the accuracy of my temp control?

I also have an E3D hot end on order and am going to want to change the value for the resistor in config.h?

My bed will heat up faster than my hot end at this point.  If I can never get it any more precise than it is currently, that would be fine.

I am a tinkerer by heart but I am no computer wiz nor am I any good at really understanding g-code.
I have another issue that I will wait until I am able to post pictures before I ask any questions.

By the way 2n2r5 I have never had a pile of plastic yet... but I will say that over the last month I have learned a lot from contributors like you...  to that I say Thank You.  So how do I tell which chip I have?

elmoret you are asking me the right question and hopefully can help me understand this better.  I am terrible at remembering acronyms.  But PWM is something I would like to understand better vs. bang bang.  With PWM is the board actually changing the voltage between 0-12 variably or is it just turning on and off 12v more frequently?
Also could you give me  a quick explanation of SSR ?

Just a note: Correct in the case of 110v countries. But most 220V countries run 50Hz . (just to be accurate for the global audience here...)

So I clearly don't understand how to use the quote function like adrian.
but
elmoret wrote 
"the processor will command 0% output, but the TRIAC has to wait for the zero crossing to interrupt the circuit."

So how do I get the processor to command 0% sooner than the current 5 seconds?

adrian if you have a second can you also explain why when I try to quote it tosses in the whole post?

The quote function won't allow me to quote at all I am clearly just doing something wrong.

I have no idea how to post video to this forum but I'd be happy to shoot some it really is cool.  I just got tired of waiting 35 to 45 minutes for the bed to warm up and that was if it would even make temp. I have an enclosure and would put towels over it, nothing worked. This absolutely works great.

I agree I need to do more research on my end.  The main problem I am having is no matter what set of instructions I follow they all lead me to "uncomment #define PIDTEMPBED" and that simply is not showing up in the config.h
I will continue to work through this from the beginning. Thank you for spelling it out for me, there is just so much to absorb.

Yeah, I just checked my firmware source, its there in Configuration.h , Line 163 .

http://www.soliforum.com/topic/1720/mas … nable-pid/ has a step by step that 100% works against Lawsy's latest firmware pull.

I didn't mean that it was a bad idea, or there is something wrong with what you are doing. :-) I was more commenting on how fast it heated up and how fast things *could* get out of hand. I would not suggest this option to most people because of the potential for problems. When you get this running you should put up a detailed guide so others can follow without seriously burning themselves or the machine.

Now as far as what version of Arduino you can use. I haven't had luck with anything but the 0022 on the stock board. That doesn't mean you can't use others. That just means I know that version works.

Try adrian's github https://github.com/ozadr1an/Solidoodle-Marlin_v1/ if you still have a config.h and not a configuration.h then that could be an issue.