If the bed thermistor is read room temperature, it probably not that what could have gone.. The high current fuse. The mosfet itself could have died. The IO line controlling the mosfet could have died... (dead mega IO pin) Dead heated bed. Wire the heated bed -ve and +ve directly to the power supply, does it heat up? No dead bed Move the +ve back to the ramps D8 +, this now goes threw thby Dust - Prusa i3 and variants
Not knowing where you got the model from, I would be inclined to think it was badly designed ie hole diameter of X and the thread is X wide.. where as the hole needs to be X+0.15 or the thread needs to be X-0.15by Dust - Reprappers
you haven’t installed the U8glib libraryby Dust - Firmware - Marlin
I have something that looks identical to the second gold one It works fine with 3mm filament, I use a geared stepper motor. I dont think it will work with 1.75, the idler bearing is grooved and the 1.75 would disappear into it, leaving very little to grip on. The long arm on the idler tension thread is a pain, it always seems to be sticking out and catching on things (will depend on where yoby Dust - Reprappers
so far there are about a total of 4 people interested and some of those are out of towners!.. Its not looking good...by Dust - New Zealand RepRap User Group
This was fixed 11 days ago... see Download bugfix-1.1.x branch Still has warnings, but compilesby Dust - Firmware - Marlin
upgrade to Arduino: 1.8.3 Check its fully up to date. Launch the boards manager, click Tools menu, Board: and select boards mangers. change from type all to all to Updateable, select more info on any that are updateable and click on update. Now launch the libraries manager, click Sketch menu, Include library, select manage libraries change from type all to updateable, select more info onby Dust - Firmware - Marlin
The link you provided doesn't even have an encoder.... How about a actual picture from the machine?by Dust - General
Its a pointless question as its what we have. Cant escape it, and no known cheat codes. So suck it up and deal with it!by Dust - General
What type of LCD display is it?by Dust - General
Just trying it myself... himm that eg sucks... The following works on my RRD GLCD /* Read Quadrature Encoder * Connect Encoder to Pins encoder0PinA, encoder0PinB, and +5V. * * Sketch by max wolf / www.meso.net * v. 0.1 - very basic functions - mw 20061220 * */ int val; int encoder0PinA = 31; int encoder0PinB = 33; int encoder0Pos = 0; int encoder0PinALast = LOW; intby Dust - General
Right, can duplicate your error this is caused by block #if HAS_CONTROLLERFAN SET_OUTPUT(CONTROLLERFAN_PIN); //Set pin used for driver cooling fan #endif trace this back to missing pins in pins_ULTIMAKER.h so edit pins_ULTIMAKER.h find #define FAN_PIN 7 add the following line after the above line #define FAN3_PIN -1 Ie this diables CONTROLLERFAN as it looksby Dust - Firmware - Marlin
How about posting links to this random (to us anyways) firmware and a copy of your configuration.h You did install the required Mini Rambo plugin to the ardunio ide? seeby Dust - Firmware - Marlin
take a look at #define HOMING_FEEDRATE_Z (4*60) if your using m8 rods you cant go any faster that about (2*60) maybe even (1*60), been a long time since I used m8 rodsby Dust - Reprappers
if you cant access the serial port normally, you wont be able to access it to upload new firmware... and uploading new firmware is a job for a week off. (its a nightmare on these boards) "Access is denied." is a os error reboot your computer and try again. open up your device manager and take a screen shot of the device and post it here (making sure there are no device driver errors) Will aby Dust - General
still use ramps and lcd interface board. It should say Position: at least once and then when ever you move the knob...by Dust - General
Use the test code on that page, just change outputA and outputB to the pins used on the mega Its different for each type of display for RRD full graphics smart controller its pins 35 and 37 Upload this code and open the arduino serial monitor use 9600 baud to see the output. NB this will overwrite your firmware, so make sure you can put it back first, or use a test board. /* Arduinby Dust - General
ramps does not set the feedrate your slicer sets the feed rate the machine simply tries to obey. In firmware you can limit the maxfeed rate, which is advisable so you can't exceed the machines capabilities.by Dust - Reprappers
Its not a potentiometer (variable resistor) Its just 2 switches (well 3 if you including the select button) Known as a Rotary Encoders See for details. So just turn the knob slowly and check the continuity , it should go on off on off..., check both outputsby Dust - General
can't try it at the moment, but give this a try in Marlin_main.c line 12708 (in my version) is the following #if ENABLED(RGB_LED) || ENABLED(RGBW_LED) SET_OUTPUT(RGB_LED_R_PIN); SET_OUTPUT(RGB_LED_G_PIN); SET_OUTPUT(RGB_LED_B_PIN); #if ENABLED(RGBW_LED) SET_OUTPUT(RGB_LED_W_PIN); #endif #endif change to #if ENABLED(RGB_LED) || ENABLED(RGBW_LED) SET_OUTPUby Dust - Firmware - Marlin
If you have a standard 200x200 heated bed that alone uses 11amp +5 amps for everything else +4 amps for good measure (as power supply labels aren’t known for being accurate) So I would very much suspect nothing like enough power.by Dust - RAMPS Electronics
Potentially a power issue, not enough current? Causing a reboot.by Dust - RAMPS Electronics
the resistance of the bed is fixed and its this that determines how much current it will pull. standard pcd heated bed are 1.1 ohm so at 5v it will draw 4.545amps. Thats 22.72watts vs the 130 on 12v so whats that in temperature? that’s beyond my math skills.. but my guess would be it would take several hours to get to 50cby Dust - General
that would be a massive step backwards..... MK2 PCB heatbed take 30+ minutes to get to 100c Consider an external mosfet driver if its a DC heated bed eg NB there is no fuse protection in these devices.. its probably a good idea to put an inline fuse in the cable that powers these boards. There is however opto isolation to protect the board its connected to.by Dust - Prusa i3 and variants
if the micro doesn't respond when an endstop is hit this is often hardware. The endstop is plugged in so that endstop shorts +5v to gnd not signal to gnd as it should. Ie 3 pin endstop plug is in backwards.by Dust - Firmware - experimental, borrowed, and future
gah annother layer? But I have to admit I like this idea a lot better than hacking existing modules Include a standard lcd connecter(s) and a decent 5v regular on the board and you might have a winner solutionby Dust - Developers
Looks the same as what older makergear hotends have blatantly stolen from The female connector (with the bump) is a Molex 0436450200 (DigiKey part number WM1845-ND). The male connector (with the hook that catches the bump) is a Molex 0436400201 Digi-Key part number WM1855-ND You will also need the associated female and male crimp connectors for the internal contacts: Molex 43030-001 tin 20-24by Dust - Controllers
@VDX except these are under the jumper pins! you cant cut them. they are not just pads. They are populated threw hole pads "Wouldn't this make jumpers useless?" yes it does what you can do is desolder and remove those 3 config pins off of the stepper module, so they cant touch the ramps. Maybe just wire up one like this with a breakout board and wires type of thing and not attaching those 3by Dust - RAMPS Electronics
"COM3": Access is denied." something else has com3 open, only one program can access a comport at any one time or you just don't have access 1) reboot your pc (as windows loves to lock com ports) just to make sure nothing else is holding open the com port. 2) load up device manager 3) plug in your controller 4) check in device manager that the operating system assigned a com port to the devicby Dust - General
everything looks ok. The only idea that comes to mind is maybe your ramps is one of these ones that have wires under the pins so can't be changed. grab a multimeter and check resistance between the jumper pins, check they are open circuit and not shorted togetherby Dust - RAMPS Electronics