SoliForum - 3D Printing Community — Rumba - Print bed

Re: Rumba - Print bed

2015-09-25T00:26:32Z

Thanks wardjr glad I havent gone crazy.

Re: Rumba - Print bed

2015-09-24T23:06:57Z

lueman wrote:

I thought the bed is basically a straight wire no (+, -)

This is an old thread and pictures have been changed. You are correct in that bed heater wires have no polarity. The HB PWR connections (power into the board) do need the correct polarity.

Re: Rumba - Print bed

2015-09-24T18:47:57Z

I thought the bed is basically a straight wire no (+, -)

Re: Rumba - Print bed

2015-05-10T16:47:11Z

I don't know you may want to contact the seller.

Re: Rumba - Print bed

2015-05-10T16:45:14Z

Do you have the correct board selected in firmware?

Re: Rumba - Print bed

2015-05-10T16:02:43Z

The connection is ok (I made an error drawing the colours).
What I have to check more?

Re: Rumba - Print bed

2015-05-10T15:12:54Z

You do the first connection pictured if you simply made an error drawing your colors.
Red should be positive and black should be negative. If you actually wired it with the polarity reversed as in the photo, you'll need to correct it. I can't say if having the polarity reversed would damage the board or not.

Re: Rumba - Print bed

2015-05-10T15:08:28Z

Whiteshark wrote:

Or should I do this connection?

Not this one delete it to avoid confusion please.

Re: Rumba - Print bed

2015-05-10T13:17:20Z

That is good test, so obviously your bed heater works. I'm not familiar with the Rumba, but you need to check the output. Either the MOSFET is bad, or some firmware setting is wrong.

Hopefully someone familiar with that board can help.

Rumba - Print bed

2015-05-10T12:59:32Z

hi,

After several problems, I changed the board to Rumba.
I have some problems to setup, but I have to fix one by one. Here's the first one:

- Print bed doesn´t heat; is the wiring correct (see picture)?
- If I connect the bed heater to the extruder pins and select "heat extruder", the bed heats.

Thanks in advance.