<![CDATA[SoliForum - 3D Printing Community — Melted Power Terminal]]> https://www.soliforum.com/topic/277/melted-power-terminal/ Wed, 24 Oct 2012 16:30:19 +0000 PunBB <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/3060/#p3060 jefferysanders wrote:

I am pretty sure my heated bed is dead....time to move to RAMPs and a separate PSU I guess.

What makes you say this?

]]> Wed, 24 Oct 2012 16:30:19 +0000 https://www.soliforum.com/post/3060/#p3060 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2931/#p2931 I am pretty sure my heated bed is dead....time to move to RAMPs and a separate PSU I guess.

]]> Tue, 23 Oct 2012 13:31:27 +0000 https://www.soliforum.com/post/2931/#p2931 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2311/#p2311 solidoodlesupport wrote:
IanJohnson wrote:

I wonder if this might be the problem -  I found this in an ebay listing for a Sanguinololu

PLEASE NOTE The Sanguinololu design is excellent but if you are going to run a heat bed the traces on the Sanguinololu board are NOT sufficient to carry the current required to operate the heat bed. Jumper wires need to be soldered on the bottom of the board. If these jumpers are not there your screw terminal will heat up enough to melt. If you would like these jumpers installed before shipping let me know and I will add them for you FREE OF CHARGE.. here is a link to the information http://create3d.com.au/sanguinololu-ass … nforcement. If you purchase this board from me or elsewhere these jumpers will be required to run a heat bed.t

This is truly disturbing. We shall look into this.

Regards,
John

a few months ago now I made a post on the google groups that there was an issue with the sanginololo electronics.

I link to some posts by nophead in the reprap forums.

I was going to put a link to that post here but I really can't seem to find it.
no matter what my search times, even if I search for all posts made by me, I can't find it.

can't seem to find it now. (actually, it's a bit frustrating that a post, (especially a post saying keep an eye on your machines as the electronics are confirmed as underspeced and possibly dangerous) -has just vanished.


Anyway.
As said above, it's a well known issue, neither traces nor connectors are substantial enough.
An idea to improve the electrical safety of the machines would be to point to point solder a wire between the spurce pin and the bed plug such that the board (and it's under-spec'd trace) is bypassed completely.

or connect a relay to the bed heater control and have a power relay switch the power directly.

]]> Mon, 15 Oct 2012 15:21:32 +0000 https://www.soliforum.com/post/2311/#p2311 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2279/#p2279 IanJohnson wrote:

I wonder if this might be the problem -  I found this in an ebay listing for a Sanguinololu

PLEASE NOTE The Sanguinololu design is excellent but if you are going to run a heat bed the traces on the Sanguinololu board are NOT sufficient to carry the current required to operate the heat bed. Jumper wires need to be soldered on the bottom of the board. If these jumpers are not there your screw terminal will heat up enough to melt. If you would like these jumpers installed before shipping let me know and I will add them for you FREE OF CHARGE.. here is a link to the information http://create3d.com.au/sanguinololu-ass … nforcement. If you purchase this board from me or elsewhere these jumpers will be required to run a heat bed.t

This is truly disturbing. We shall look into this.

Regards,
John

]]> Sun, 14 Oct 2012 18:50:15 +0000 https://www.soliforum.com/post/2279/#p2279 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2276/#p2276 Depending how the board is made (internal power planes and trace width), your 30 watt soldering iron may not be able to transfer enough heat to get the terminals off. Adding some extra solder will help some. Worst case, trying cutting the terminal block apart so that you only have to heat one pin to get it off instead of two pins at the same time.

]]> Sun, 14 Oct 2012 18:28:30 +0000 https://www.soliforum.com/post/2276/#p2276 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2268/#p2268 Heat both terminals at the same time. Try to apply a little solder to get more heat transfered

]]> Sun, 14 Oct 2012 13:33:55 +0000 https://www.soliforum.com/post/2268/#p2268 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2261/#p2261 It's still a few days before my new board comes in, so I thought I would try to replace the melted connector, but I can't get it off.  I have a 30watt solder iron, braid, a solder sucker, but I can't get the solder holding the connector to melt enough to remove.  It gets a little shiny, and a little malleable, but it won't flow.  Is there a trick to getting components off of a pcb?

]]> Sun, 14 Oct 2012 04:11:00 +0000 https://www.soliforum.com/post/2261/#p2261 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2205/#p2205 Just started wiring up my Ramps board and everything went well until the power connectors. The thing has a seperate 12v rated at 11 Amps input that I need to provide in order to run the heat bed. So I guess there is some hocus pocs going around in the heat bed of the solidoodle, or is the design different when it comes to the heatbed?
Have an extra Ramps heat bed laying around that I can fit, so thats not a real problem.
If I want to power the steper drives, and the heated bed I need atleast 16Amps. The PSU wit the solidoodle provides 10A.

]]> Fri, 12 Oct 2012 19:39:37 +0000 https://www.soliforum.com/post/2205/#p2205 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2190/#p2190 it's a very well known issue that the power components of the board are under spec'd.

it's been discussed on the Reprap forum, and the solidoodle google pages.

over at reprap there are some guys who will only sell kits, (not assembled products) specifically because they consider them dangerous.

if you were going the route of printing a board, might be better to re-design the whole board with beefier components?

]]> Fri, 12 Oct 2012 14:31:32 +0000 https://www.soliforum.com/post/2190/#p2190 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2173/#p2173 Stoney, what do charge per PCB for small production runs?

I've been doing some Arduino projects and am interested to know.

]]> Fri, 12 Oct 2012 02:27:33 +0000 https://www.soliforum.com/post/2173/#p2173 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2171/#p2171 I have a PID controller on my IR oven for soldering. I imagine the heated bed is going to run similar loop times and a relay is fine then. cycles are usually 10 seconds or more, an external mosfet would be much better anyway, no annoying clicking.
I will be making small pcbs for little upgrades like this and throw them on ebay pretty cheap, i already do that sort of thing now. I was thinking the LCD upgrade could do with a pcb.
I have no problems with keeping it open source and will chuck eagle files up here later.

]]> Fri, 12 Oct 2012 02:23:26 +0000 https://www.soliforum.com/post/2171/#p2171 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2127/#p2127 I believe the current algorithm is on/off only.

The officialMarlin has just released a PID loop bed temp update and I'm investigating before I merge it to my Solidoodle 2 firmware.

]]> Thu, 11 Oct 2012 04:06:14 +0000 https://www.soliforum.com/post/2127/#p2127 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2122/#p2122 boosting the tracks is not going to help with that problem, thats a connector failure due to high resistance for sure.
I suggest when first using the device and on occasions, test the terminal with a patented heat monitoring device known as an index finger and see if its getting hot. if it is, make sure the screw is tight..

I will be finding a spare 12v relay and getting that 10A off the pcb entirely if I can, is it a slow switching thing or does it use PWM to hold the temperature ?

]]> Thu, 11 Oct 2012 01:43:10 +0000 https://www.soliforum.com/post/2122/#p2122 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2062/#p2062 The Azteeg x3 looks like a much better built PCB for handling higher current.

]]> Tue, 09 Oct 2012 12:15:12 +0000 https://www.soliforum.com/post/2062/#p2062 <![CDATA[Re: Melted Power Terminal]]> https://www.soliforum.com/post/2061/#p2061 shabby wrote:
devilman2075 wrote:

The big question is should us future solidoodle owners consider soldering in the jumpers if this is a known sanguinololu issue?

It would probably be better if solidoodle did this themselves, otherwise people will be burning boards and they'll have to be replaced at solidoodles cost.

I agree completely it should fall on solidoodle to add necessary jumpers, but if they don't and itll add some added security that you won't burn down your house, I think itd be a worthy addition on the users expense. I can't imagine it really being an issue if its not supplied this way to begin with. They have got to be running their printers pretty extensively and if it hadn't become an issue for them maybe it was just a loose cord

]]> Tue, 09 Oct 2012 01:27:47 +0000 https://www.soliforum.com/post/2061/#p2061