those gears are for which works well. but not what was wanted I suspect.by Dust - General
Never heard of windows having an issue with that baud, except old XP But give 230400 a go. Its what a lot of linux users use (which can have issues with 250000)by Dust - Sanguino(lolu)
Have you upload real firmware to the ramps or is it just running some test firmware. I suspect the latter.. look into installing marlin firmwareby Dust - RAMPS Electronics
Yes a graphical display is to cpu hungry, a standard 4*20 LCD Ive been told is fine. I was planning to use a Azteeg X5 regardless.by Dust - New Zealand RepRap User Group
The soldering on the pins of your pololu is the worst I have ever seen!!! I would bet one or more of those is bad. Also hot glue and electronics is not a good idea...by Dust - Controllers
You have zapped the 644p/1284p Get another one... lots available on emakershop.com eg , ,by Dust - Controllers
take a read ofby Dust - RAMPS Electronics
min end stop have to be X left and Y back, the way you have the machine is literally backwards turn your machine around 180, and then make sure that x- move towards the endstop and y- moves towards the back endstop you can do it your way and home to max if you like, but its a lot more confusing.by Dust - Firmware - mainstream and related support
Im just guessing here... from something similar I experienced. if you uploading to sd via pronterface, not all of the pronterface interface is disabled, so if you attempt to move a axis or turn temp off (as I found the hard way) those codes are put into the middle of your gode file.by Dust - Firmware - mainstream and related support
X_INVERT_MIN inverts the endstop... X_INVERT_DIR changes the directionby Dust - Firmware - mainstream and related support
Most USB ports already have some protection on them... If you draw to much current from a USB it will normally shut down that port (often requires a complete power down to reset) You say a jumper burnt out? which jumper?by Dust - Reprappers
Most people kill their Arduino by shorting +5 to GND normally via incorrectly wired endstops. The motherboard type only defines which IO pins are attached to what devices. worst case this turns on the FETS by accident and things just dont work. I do not believe this can kill a board. But in saying that, you should always set the correct motherboard type, to do otherwise is foolishby Dust - General
Its not that easy that device requires some very specific timings, which will interfear with normal ramps operation. They normaly require a dedicated micro of their own.by Dust - Firmware - experimental, borrowed, and future
on your image for the bottom of the board just behind end stops is a thread connecting the endstop pins check that thread isn’t conductive... remove it regardless...by Dust - Sanguino(lolu)
no. there shouldn’t be any contact between the signal lines. Its this a 40 pin dip SL? (big large black chip) or a surface mount job? (quite small, easy to short pins)by Dust - Sanguino(lolu)
I think you have a hardware fault.. each endstop is connected to their own IO line... one cannot effect the others unless there is a short...by Dust - Sanguino(lolu)
a single hot end cannot have more than one extruder feeding at one time... there is only one path to the melt chamber, so only one filament at a time. If you want more than one your going to have to design a hotend with 3 paths into the melt chamber... Also as noted currently no firmware supports concurrent extrusion. Just tool change so you can swap from one extruder to another. You shoby Dust - General
IRC is Internet relay chat, is real time chat Most use a IRC client (a program) but you dont need to, there are web based gateways just go to Pick a Nickname, enter #reprap into the channel Enter the capture to prove your a person and not a machine and click on connect re RUMBA, its a well supported board. Is in the main marlin configuration files. But you can just hack on another poloby Dust - General
Hi Get yourself onto the reprap irc channel and talk with RifRaf, he has been working on just this for a while. I believe he is using a , 6 stepper drivers. also see From what I see the software support for 3 color is primitive so far..by Dust - General
I don’t believe that possible with current firmware, you would need to hack that.by Dust - General
Re read original question. Asked how to do it in firmware, specifically.by Dust - Reprappers
See its call INVERT_{AXIS}_DIR Ignore the comments in the code, they really arent based in reality. I dont know why someone hasnt answered your queston before, this is simple stuff. Other than being a bunch of smart arses....by Dust - Reprappers
post your configuration.h to pastbin.com and link it here...by Dust - Firmware - mainstream and related support
D8 is a separate cct, the 11amp cct sounds like your 5A fuse is gone, so 12v isnt getting to anywhere but the heated bed.by Dust - RAMPS Electronics
With switches normally closed is preferred, that way when your enstop plug falls out, it triggers. vs not triggering and having your axis try and destroy itself. Also has better electrical noise protection. (so im told)by Dust - Reprappers
if its enabled m503 will show your eeprom setting.by Dust - RAMPS Electronics
atmega1284.upload.speed=38400 try 57600 different boot loaders have different upload bauds Also check your enable auto reset jumper is on, the computer needs to reset the board to get into upload mode. stk500_getsync(): is a communications error, basically its not getting the responses it needsby Dust - General
in marlin there is M42, it allows you to tun on any IO pin, even with PWM. Depending on how you LCD buzzer is wired (check you pins.h for your board, look for #define BEEPER 37 for eg) eg for a RRD LCD its On: M42 P37 S255 Off: M42 P37 S0 You just add these you you start or end gcode file as needed. So basically you have missed the two important bits, what firmware and what LCD with buzzeby Dust - General