SoliForum - 3D Printing Community — Checking voltages

Re: Checking voltages

2014-07-10T02:06:29Z

If you know for sure:
* Chip type
* Sense resistor value
* Motor current rating
Then you can tune to a particular Vref voltage.
If you're missing any of those three, then it's better to go by ear I think.

Re: Checking voltages

2014-07-08T22:53:48Z

Okay, thanks for the help. I figure you're right in saying that it probably has to do with the heater they sent me. I have a really early solidoodle 3 (one of the first shipments out) and I wouldn't be surprised that it just has the same one as the solidoodle 2.

Re: Checking voltages

2014-07-06T11:10:24Z

The various values for resistance are really valid for the week they were posted/edited and thats that - SD have changed beds at least 4 times through the life of the SD3. Who knows - the week they shipped yours they might have been using the same designed pad as SD2's... or even SD2 pads on the SD3.....

You may "not want to" contact support - but its best to speak to the people who collected your money as the information anyone else provides about what Solidoodle are shipping this week or last week or last month or last year are highly likely to be inaccurate - everyone here is really just at best guessing about what Solidoodle sent customers at whatever particular point in time it is as they do not communicate to us when they change things.

At the very least, Support will be able to, based on your Serial #, tell you what it shipped with and one would expect what its resistance should be.

They may then work through with you to check the heat-pad isn't damaged. Higher resistance can indicate shorts or something, or even just loose/poor connections - but in general a situation like that would raise your resistance considerably more than 0.4 .

Re: Checking voltages

2014-07-04T17:30:52Z

Okay, so I checked the resistance on the heated print bed and I got 2.3 ohms. The SD3 is supposed to be 1.9 and the SD2 is 2.3 I have the SD3 so how do I fix this?

Re: Checking voltages

2014-07-04T16:32:08Z

No, I'm talking about checking the board and wiring with a multimeter for each part like the steppers and the heating elements. The solidoodle website has a section on it, but it's for the SD4 and doesn't tell you what to do if the readings are incorrect besides contact support which I don't want to do. I just what a tutorial on how to set that stuff up. I've seen people talk about it on here before.

Re: Checking voltages

2014-07-03T04:54:25Z

Are you referring to the voltage coming out of the PSU? That can be anywhere from 12v - 12.8v and for your concern of quicker heat times you'd want to be closer to 12.8v

Checking voltages

2014-07-02T21:57:45Z

Does anyone have a link to a guide for how to check the voltages on a SD3 and what to do if they're off? My heated print bed takes entirely too long to heat up and I just upgraded to an e3d and a new power supply. Maybe I'm just impatient, but I'd like to just check everything to make sure it's where it needs to be. I figured now would be a good time to do it since I'm calibrating everything. Thanks.