Re: Downclocking?!
The key part is less the fuses, and more the clock source. The ceramic oscillators that sanguinololu uses aren't brilliant (compared to a crystal) and the only thing that differs (besides frequency)...
View ArticleRe: Downclocking?!
Quotesungod3kI ordered a 20mhz atmega 1284p replacement for my sanguinololu These 20 MHz aren't a fixed frequency, but a maximum frequency. ATmegas run at lower frequencies just fine, down to the kHz...
View ArticleRe: Downclocking?!
Aha, thanks for the fast answers, in the Gen/ article I read: "A bootloader compiled for 16 MHz won't work on an ATmega running at 20 MHz and vice versa. Again, make sure to choose the right variant."...
View ArticleRe: Help choosing a control board
This may not answer your question(s) fully, but I hope that it will give you a start... ;) A buddy of mine is also building his own RepRap style of the TAZ and would like to put it up for sale some...
View ArticleRe: My little ARM board
I've already got my APrinter firmware running on this. :) There were some mysterious problems with the ADC, even though I was using the exact same code as on AT91SAM3X8E. After some experimentation I...
View ArticleMegatronics Reset
Hi guys, First post here.. Sorry if this is the wrong forum. I've purchased Megatronics v2, uploaded test firmware. Now I am not able to reset the board even I tried every combination with the reset...
View ArticleRe: Downclocking?!
Just for more confusion :-) An ATmega running at 16 MHz will accept a bootloader compiled for 20 MHz as well. It'll even run. But the baud rate will be very odd (115200 / 20 * 16 = 92160 baud). This...
View ArticleRe: Megatronics Reset
What makes you believe that the board is not resetting? If the stepper motors are not moving back and forth, do you have 12V on +12V1? Do the LED's on the board flash in a pattern? I have not yet...
View ArticleRe: Megatronics Reset
One other thought. My SainSmart board came with the test firmware already installed, as the factory apparently used it for testing.....
View ArticleRe: My little ARM board
Wow, that was fast! Well done :) I got to get my act together now and finish up the rest of the hardware asap. I am stuck obsessing over the heater driver. I am considering using a switch mode...
View ArticleRe: Help choosing a control board
Thank you for the response! I essentially came to the same conclusion. RAMPS is cheaper, and modular so I can replace components if they break. I think it will meet my needs just fine. QuoteAre you...
View ArticleRe: Help choosing a control board
Yeah, RAMPS is designed really well in my opinion, and as you said, very modular indeed. I don't think it's gonna go away anytime soon. Well good luck on your TAZ and I think you made the right choice...
View ArticleTricolor Melzi Boards communication errors
Hello I have a Tricolor Mendel with Melzi boards from 2013-06-06(the date on the label). I have not re-uploaded the code to the boards, but I am familiar with Arduino enough to be able to. I have been...
View ArticleRe: avrdude: verification error and other weird behavior
Alright Im back with the new chip. I tried all the GUIs first but most of them dont support the ATMEGA1284p or I get the " cannot set sck period." error. Assuming I understand the function of sck...
View ArticleRe: avrdude: verification error and other weird behavior
If you install the Gen7 support correctly into arduino, from the link mr Traumflug provided, you will have Gen7 appear in the arduino menu for Board -> Gen7 with ATmega1284p... Just like in the...
View ArticleRe: avrdude: verification error and other weird behavior
I tried that first. I have the Gen7 options listed and chosen and still get avrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: verification error, first...
View ArticleAdding A Mains Power Switch
So I'm adding a power switch to the power source on my Smartrap. I'm confused by these vague directions. [bukobot.com] Where's the fuse?
View ArticleRe: avrdude: verification error and other weird behavior
Check it against this page and this page. All 5+ goggle answers to that error seem to indicate that ppls just plug the cable wrong way.
View ArticleHow to modify this toy piano circuit?
Hi! I am new to this forum. I have recently seen a circuit diagram of Toy Piano which provides tone in 5 different pitch levels. I planned to do that project, but with few modifications. Can anybody...
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