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I tried a new Arduino board and everything works great now. The LCD is working, i can print without my pc. So i think the 5V regulator in the Arduino was bad, will try to replace it.
Thanks for help everyone and Merry Christmas to you all.
by
AuriuX
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Controllers
D8 heatbed
D9 two 40mm fans with separate mechanical on/off switch.
D10 hotend.
by
AuriuX
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Controllers
Will try to measure the 5V voltage regulator.
As for mosfets, the Q3 one is burning hot.
by
AuriuX
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Controllers
I tried to touch all of the mosfets. One of them is burning hot, i cannot hold my firnger even for one second to it. i disconected the lcd from the ramps and the mosfet in tha same burning hot. Cant hold my finger to it. What should i do? Contact my board seller? Its a new board.
by
AuriuX
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Controllers
Quotedc42
The Mega's voltage regulator is very likely working but overheating due to the current drain and going into thermal limiting mode. In particular, the back light on the 12864 needs quite a lot of current. Also, some 12864 displays have the back light series resistor built in, while others need an external series resistor.
I recommend driving the back light through a suitably large seri
by
AuriuX
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Controllers
Update. I meassured 5V on the all the servos and aux pins. With 12V power supply i have 3.8V on the 5V pins, with only the USB cable i have everywhere 5V, if i connect both USB and 12V Power supply i have 4.5V on the 5V pins.
Something is wrong with 5V from the ramps board.
by
AuriuX
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Controllers
My friend ordered lcd for himself, so i think i will wait when he receives it and will check with other one. Maybe its not my board, maybe its the lcd itself thats cousing the problems?
by
AuriuX
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Controllers
Quotecxandy
Please check 1117-5.0 on MEGA 2560 board, may mistake 1117-3.3. I English is poor, sorry!
Sorry can you be more specific? What is 1117-3.3?
by
AuriuX
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Controllers
The connection between the diode and the vin pin is great. Could it be that the LCD itself is bad or damaged?
by
AuriuX
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Controllers
QuoteDust
There have been a bunch of new boards that the connction from the end of the diode to the mega pin is broken.
With a multimeter check you have connection from the left most leg of the diode to the vin pin on the mega
Will check the connection of them in the evening. The left leg should be with the vertical line on the diode?
by
AuriuX
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Controllers
I checked my ramps board and the D1 diode is in place. So its not diode that is cousing this. Unlless the diode is bad, but i dont think that could be the case in the new ramps board.
by
AuriuX
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Controllers
Quotedougal1957
Have you installed the Diode (D1) underneath the X and Y axis Driver boards (It is half under each of them)? It is this that allows a 5V feed to the Mega when the USB Is disconnected.
Will check the board for a D1 diode when i come home. Hope i find no diode there, just an empty space.
by
AuriuX
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Controllers
End stops connected corectly. its a new printer build, didint print anything yet. all the axis goes home fine.
If the ramps would not make a proper contact, then i think the screen wouldnt show anything on the lcd all the time. Now when i plug the usb to the pc, the lcd shows all the info, i can control everything from the lcd.
No PC - no LCD
by
AuriuX
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Controllers
Hello,
I received my 12864 LCD screen and tried to hook it up to the RAMPS board. I plug in the USB cable to PC and the screen turns on, shows all the info. If i turn on the 12V power supply for ramps the screen dimms a bit.
The strangest part is when i disconect the usb from my pc and the screen just stays lid, no info showing. Plug in back the usb and the screen shows all the info, just a bit
by
AuriuX
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Controllers
Sveiki,
Malonu, kad turime savo kategorija.
Bandau pasijungti 12864 LCD ekrana. Ijungus USB i PC, ekranas veikia puikiai, rodo viska ryskiai. Ijungus 12V maitinimo bloka elektronikai, ekranas pritemsta, vaizdas palieka neryskus. O istraukus USB is PC ekranas tik sviecia, vos eina imatyti konturus vaizdo. Gal kas susiduret su tokia problema?
Video
by
AuriuX
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Lithuania RepRap User Group - Vilnius