Re: can my megatronics board be fixed
Most likly there is a voltage regular on the board somewhere that is now blown.
View ArticleHow do you measure over 10A?
All the multimeters I can find are limited to 10amps. Is there something I'm missing? I'd like to see what draw is happening on my heated bed, but that's going to be 10-20 amps. Thanks
View ArticleRe: How do you measure over 10A?
QuoteUkIan All the multimeters I can find are limited to 10amps. Is there something I'm missing? I'd like to see what draw is happening on my heated bed, but that's going to be 10-20 amps. Thanks...
View ArticleRe: How do you measure over 10A?
... read about shunt-resistors - it's as simply as measuring the voltage-drop along a known resistor (or the previously mesured wire resistance) and using Ohms law: I=U/R ...
View Article12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
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...
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
Looks like you blew the voltage regulator on the mega. I am guessing you plugged the end stops backwards...... Either that or your ramps is not making proper contact.
View ArticleRe: Ian's Robert's heated bed
How about some high temperature glue or stove cement? if that fails how about a thick layer of thermal paste and making the heater into a sandwich with a tile or glass bottom?
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
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...
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
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. QuoteAuriuX End...
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
NO PC = NO LCD as the LCD and ramps are powered by the PC. One of the functions of USB is to provide power. I had the same issue, I am sure the backlight of the lcd is lit but no text is present when...
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
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....
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Re: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
This is a pic to show where it is Most ramps as far as I know come without it installed and it is usually taped to it somewhere. If it isn't there then it should be a 1N4004 ramps_zps9eaf350f.jpg See...
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
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.
View ArticleRe: RAMPS for Due!
Yes, it was a serious question. I've watched your YouTube video, and whilst it demonstrates the effect of finer microstepping on a stepper motor with a long pointer attached, I don't think it proves...
View ArticleRe: Ian's Robert's heated bed
I've got some on order for tomorrow, so I'll see how well that holds. I might try roughing up the painted surface too and if that doesn't work I'll try the unpainted side :)
View ArticleRe: RAMPS for Due!
Hi dc42, In generaly you have to 100% right. Firmware-tuning is more important as micros... Maybe a stable frame, perfect linearguides, e precisious hotend ( i have see your worldprepss with a great...
View ArticleRe: RAMPS for Due!
Honestly for me its a tossup. The firmware tuning is slowly getting there. However in the deltabot realm the current firmware is fine if you want to print toys as Angelo pointed out. However the...
View ArticleRe: megatronics problem
Wiki Megatronics page has a Fritzing diagram on it so I would try that first. Otherwise PM the developer. Most common software around here seems to be either gEDA or KiCad.
View ArticleRe: 12864 Smart LCD with RAMPS 1.4 Strange behavior. :S
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...
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