Re: Low cost 32-bit controller board
QuoteAndrewBCN So, this project follows exactly the same paradigm as all the others that preceded it, and right now I don't see how dc42 can bring down the costs of a Duet board ($120 + shipping) to...
View ArticleRe: Highend driver on lowend board
A word of caution about putting more expensive drivers on Arduino/RAMPS. Putting higher-current drivers on it is fine, as I tried to explain in my earlier post. However, some of the more expensive...
View ArticleRe: Low cost 32-bit controller board
With RPi most people use a USB Wifi dongle, those are dirt cheap, but not sure how easy it would be to implement support for that (drivers, USB A port)?
View ArticleRe: Low cost 32-bit controller board
Quotedc42 ... Andrew, you are complaining about the paradigm and not "thinking outside the box", but the only alternative one you have suggested is a Linux box plus an 8-bit microcontroller. I have...
View ArticleRe: Low cost 32-bit controller board
Quoteplankton With RPi most people use a USB Wifi dongle, those are dirt cheap, but not sure how easy it would be to implement support for that (drivers, USB A port)? First you need to write the USB...
View ArticleRe: Low cost 32-bit controller board
QuoteAndrewBCN A network bridge or an add-on WiFi daughterboard are both likely to cost almost as much as a full-fledged OctoGoatBox and you still don't have the CPU power, RAM and storage required to...
View ArticleRe: Highend driver on lowend board
... yes, the limits I'm receiving with common RepRap-controllers (and many comercial boards too) are around 100kHz clocking speeds ... some more expensive (4k€!) comercial boards supports until 2MHz...
View ArticleRe: Low cost 32-bit controller board
Quotedc42 QuoteAndrewBCN A network bridge or an add-on WiFi daughterboard are both likely to cost almost as much as a full-fledged OctoGoatBox and you still don't have the CPU power, RAM and storage...
View ArticleLow-current stepper drivers
I am designing a tiny 3D printer which will make use of some unipolar steppers which use 0.28A. Are there any cheap/more suitable controllers i could use instead of the pololu/stepsticks i see all...
View ArticleRe: Low-current stepper drivers
Hi, Did you check [arduino.cc] ? All you need is a few transistors, in the example above they are using a ULN2003A chip which is just a few transistors in a DIP package. Pololu-style carrier boards...
View ArticleRe: Low-current stepper drivers
I wasnt sure if there as a certain way i needed to interface to the RAMPS board; in the given example would i just use the pins where the carrier board would plug in? I should also clarify that the...
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Re: Low cost 32-bit controller board
AZSMZ_LCD.jpg I wonder if you have noticed the 8pin socket of LCD board. This is inserted WIFI module ESP8266 place.
View ArticleRe: Low cost 32-bit controller board
Quotecxandy I wonder if you have noticed the 8pin socket of LCD board. This is inserted WIFI module ESP8266 place. No, I hadn't noticed. Nice! I wonder whether RepRapFirmware could be run on that...
View ArticleRe: Low-current stepper drivers
... 6-wire motors can be used as unipolar (both middle-pins connected) or bipolar (middlepins ignored). The RAMPS board delivers only STEP+DIR signals for a monolithic driver, for driving a stepper...
View ArticleRe: Low-current stepper drivers
I'll probably still have to use a RAMPS board for the extruder stepper so i'll wire the unipolars to some cheap drivers
View ArticleRe: Low-current stepper drivers
If your motors are 6-pin ones, then as VDX says, you can use them as bipolar steppers. In which case, the simplest option is to use cheap stepstick drivers sourced from eBay and turn the current down...
View Articlemegatronics v2 only from usb and no fan control
Hello All i have bought a megatronics v2 from ebay, i think its a sainsmart as most of them are (correct me if im wrong). i had a problem with the endstops shutting the board down, i found a cure for...
View ArticleRe: megatronics v2 only from usb and no fan control
You popped the on-board 5V regulator when your mis-wired endstops triggered and caused a short. Whatever regulator Sainsmart used is hyper-sensitive from my experience. My fix was to power the board...
View ArticleRe: megatronics v2 only from usb and no fan control
aah nice :| do you think it is replaceble? or can you wire it witouth being hooked up to the pc (like a phone charger or smt) do you think that it could be related to the fan problem aswell
View ArticleRe: Low-current stepper drivers
Hi, If you are going to use a Mega 2560 + RAMPS + Pololu-style drivers for the extruder + Marlin firmware, then the simplest route by far with the least waste of time and money is to follow Viktor's...
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