Re: Rambo 1.1B 2 heated beds and 1 extruder?
Not without some hacks if you're running at 12V. The default board only has a single high-current (15amps) output for a heated bed. Hooking up two standard 10+amps heated beds to the single heated bed...
View ArticleArduino clones with CH340G - Warning!
There are very cheap Arduino clones with CH340G chip for USB communication. Unfortunately, this chip need special driver (you can download it from vendor's web page), has documentation in Chinese only...
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Re: New TFT control panel for 3D printers
I now have prototype PCBs for the TFT 3D printer control panel. I have them working with the 3.2" widescreen and also with the 4.3" display shown in these pictures: 2014-12-05%2020.46.01.jpg...
View ArticleRe: Arduino clones with CH340G - Warning!
yes, has already been discussed [forums.reprap.org] The not compatible with usb3 is new info though
View ArticleRe: Arduino clones with CH340G - Warning!
Thank you for this link and sorry for double post. I searched for CH340G before posting and found nothing :( Anyway, I am not sure if the problem is USB 3.0 or some specific USB controllers (and have...
View ArticleRe: Arduino clones with CH340G - Warning!
no one is ever going to use another ftdi chip though... not after the stunt they pulled...
View ArticleRe: Rambo 1.1B 2 heated beds and 1 extruder?
If you go with the cheap 40A mechanical automotive relay (as I do), you can change the BED_CHECK_INTERVAL from the default 5000 to 15000. This reduces the clicking sound mentioned by cdru to max. once...
View ArticleIssues with RAMPS board after connecting power supply
recently i obtained a ATX power supply from an old computer of mine to power my RAMPS 1.4 board. I followed a diagram on the reprap wiki showing how to connect the power supply to the board, with the...
View ArticleRe: Rambo 1.1B 2 heated beds and 1 extruder?
Quoteenif If you go with the cheap 40A mechanical automotive relay (as I do), you can change the BED_CHECK_INTERVAL from the default 5000 to 15000. This reduces the clicking sound mentioned by cdru to...
View ArticleRe: Issues with RAMPS board after connecting power supply
I'd unplug the ramps board from the MEGA board and see if you can communicate with the Arduino without anything plugged in. Try uploading a test program from the Arudino IDE such as Blink. If you...
View ArticleRe: atmega644p bootloader
i tried all the bootloaders and none of them work... Maybe i am doing something wrong:S
View ArticleRe: atmega644p bootloader
Go yout tx and rx correct way around? load a up a test serial sketcha and the serial monitor on the IDE and mack sure you can send and receive.
View Articlestepper driver 1.2 instead of Pololu
hello everybody i want to make a 3d printer based on ramps or teensylu (both can use pololu as stepper drivers) can i use stepper driver 1.2 (stepper driver 1.2) instead of polulu ? iknow what the...
View ArticleRe: atmega644p bootloader
bingo !. on serial test i figured that pin 9 had a bad solder.. my mistake .. resoldered and now every bootloader on the block works....(:P)
View ArticleJumpers for DRV8825 on Megatronics 2
I'm trying to build a 3D printer using a Megatronics 2 controller. I got Pololu DRV8825 stepper motor drivers for the 1/32 steps. My problem is the Megatronics 2 wiki. In one place it says that each...
View ArticleRe: stepper driver 1.2 instead of Pololu
you could. but why would you want to.. it only suports full and 1/2 stepping. Most wasnt at least 1/8 microstepping for smoothness and noise reduction Just buy some pololu modules. thare are avalable...
View ArticleRe: Jumpers for DRV8825 on Megatronics 2
The first 3 pins set the steps the same as the A4988 except 3 pins set the DVR8825 at 32 microsteps where the A4988 is 16 steps. The 4th pin for the DVR8825 goes to the sleep and reset pins and is not...
View ArticleRe: stepper driver 1.2 instead of Pololu
thank you for your reply and for your advice but i want to use stepper driver 1.2 because i can't find pololu drivers in my country (i live in syria) , even i cant find any allegro chip (a4988 or...
View ArticleRe: stepper driver 1.2 instead of Pololu
Man, your on the internet. Order some.... also see the ones based on the TI's DRV8825 [www.reprapdiscount.com]# [www.reprapdiscount.com]# or for cheaper stuff that hasn't been tested (ie buy more than...
View ArticleRe: stepper driver 1.2 instead of Pololu
QuoteDustMan, your on the internet. Order some.... You might not have heard the news lately, but there's been a conflict going on in Syria the last little while. Many countries national mailing...
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