jason_hk heated bed kit set up question

[Maarten77 0]

i bought a heated bed kit from amazon http://www.amazon.com/Evervictory-Aluminium-Temperature-Ultimaker-Printers/dp/B00U8AI9NW but there isn't a good tutorial on how to set this up or what relay i need to buy. so does anyone know how to install a heated bed?

[tommyph1208 55]

Im assuming you have a UM1?

You need a bigger/additional power supply and a DC relay or better mosfet... As an alternative to the whole relay business, you can swap your entire electronics for something better that can actually handle a heated bed, which is what I did when installing that same heatbed kit.

I went with a RUMBA card and stepped the whole machine up to 24V running off a single 300W power supply mounted under the printer... Anothe option could be the cheap and reliable Ramps (you already have the Arduino), those are 12V.. So in any case you need a new PSU and you probable have to swap the 19V cartridge in your hotend to match the new voltage as well...

Edited December 19, 2015 by Guest

[Maarten77 0]

Isn't there a way to make a heated bed with a completly separate powersource and display witch doesn't interact with the printer? I already have a raspberry and tiny led display so i can see the temperature and then when it is the correct temperature turn on the print.

[zoev89 73]

Hi Maarten,

I think that is no issue at all to make a separate control. The only difference would be that you would have to heat up the bed until it is stable yourself before starting the print. When the print is done you would have to turn it off.

But connecting it to the printer makes it a little easier since when the print starts it heats up the bed automatically and when done it turns it off. You could still use a separate power supply for the be bed if you like.

Knowing your electronics helps a bit when doing these kind of modifications.

[tommyph1208 55]

Seperating the bed intirely sounds like a drag in the long run, its just nice to have everything to do with it, be part of the slicing... Anyways, thats my oppinion

[Maarten77 0]

thanks for the help. hopefully i can find a tutorial because i am bad at electronics.