Re: Led Strip Universal Regulated 12V Power Supply Transformer
Hi, thanks for answer, but i don't understand, i think the power supply are DC output, and i don't know what talking about a diode... can you explain please, or share a link for that, i use arduino...
View ArticleRe: Led Strip Universal Regulated 12V Power Supply Transformer
Hes a spambot, repeating posts from the forum to try to blend in. Ignore it. The power supply should be suitable to run a reprap. 20A should be enough but more amperage doesn't hurt.
View ArticleRe: Led Strip Universal Regulated 12V Power Supply Transformer
Ok. very thanks for your answer!!!
View ArticleRe: Completely autonomous electronics?
That sort of setup exists and is quite common - I use a 4x20 lcd, rotary encoder and sd card setup with marlin firmware, and my reprap is not tethered to my pc. Admittedly I do have to connect it to...
View ArticleTwo power supplies in parallel?
I just installed a new PCB heated bed on my printer but it seems that my main power supply (laptop type) can only run either the extruder or the bed, not both at the same time. I have a second power...
View ArticleRe: TB6560 driver board
I put the link to the wiki page where you will find the schematic on the first post. I will update the design soon, replacing the useless diodes by a more useful fuse.
View ArticleRe: USB cable starts overheating when Power Supply is turned on
I received a new Sanguino board with new stepsticks. Working on everything now, currently stuck at the point of configuring my Stepsticks.. Which I have no idea how to work the formula I found on the...
View ArticleRe: Two power supplies in parallel?
Probably best to avoid wiring them in parallel. All it takes is a small difference in voltage and current will flow from one to the other. That said, with most of the electronics out there you should...
View ArticleRe: Two power supplies in parallel?
Alternativelly you can put the bed on a separate circuit with a switch like a electromagnetic relay or a SSR. This way one psu supplies for everything, the other only for the bed, and they can be kept...
View ArticleRe: Two power supplies in parallel?
if you are good at electronics, you can put in a rectifier on each supply, that could prevent voltage difference problems, but load wise will be tricky, to passively induce load balancing, you can try...
View ArticleRe: USB cable starts overheating when Power Supply is turned on
You need to know the sense resistors exact value. The value that is adjusted from the pot is the voltage between two points. That voltage gives the current setting to drive the motors by formula A =...
View ArticleRe: USB cable starts overheating when Power Supply is turned on
first of all, are you informed about the Rsense value on ur stepsticks? with that value on hand, u need a voltmeter to "see" the Vsense ... and u need a small trimmer screwdriver I_TripMax=...
View ArticleRe: Two power supplies in parallel?
And what about the gnd line balancing. Without that, you will be having amps from both sources sinking in only one psu gnd (whichever provides a better path). One of the gnd lines may get a current...
View ArticleRe: USB cable starts overheating when Power Supply is turned on
Hey, thanks for your reply, I still haven't gotten things running. I also asked the seller of the equipment, he says that just turning up the meter slowly until the motors work as intended... Not sure...
View ArticleRe: Two power supplies in parallel?
mmm, if the PSU is a true PWM PSU, the current returns are independant. they are suppose to be floated. you can try and measure for connectivity between the +/- pin to L, N and E. there should be more...
View ArticleRe: USB cable starts overheating when Power Supply is turned on
i guess 0.7v will work too (1.7A drive, about 2/3 the torque i think). but it is always good to find out what the Rsense are. if you have a chance to spot a certain digital multimeter Uni-T UT61E, it...
View ArticleRe: Two power supplies in parallel?
It's a Sanguino board, rev 1.3a I also thought about running the ground through the board and the + to the bed, actually tried just connecting the bed directly to one power supply, but something about...
View ArticleRe: Two power supplies in parallel?
the R of the heater bed is low, u measured that? over current situations, some PWM shutsdown. there has to be some extra resistance in the PCB to justify it working though. cheapest PSU? any china...
View ArticleRe: TB6560 driver board
fwoooo this is very interesting for me ... wad a nice machine !!! and the belt doubler idea is very nice [www.youtube.com] was he trying to play a song from the motor noise? (:P) with that, it also...
View ArticleRe: USB cable starts overheating when Power Supply is turned on
Just by hand-tuning them I managed to get them all working on their lowest possible energy level. The only thing I find weird about the machine is that my extruder stepper makes a pretty annoying high...
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