Some problems with my first build.

Hey everyone,

I've just completed the build of my prusa i3 with parts i've collected on aliexpress and ebay. So not really from 1 seller.
I've uploaded the Marlin firmware, changed some parameters like motherboard 33, thermistor values.
So far i am able to connect my printer with pronterface, and to move the axis a little.
One problem I have is the smart controller display is only showing white squares.
Another concern is i've used a 20 kohm thermistor for the heatbed, and only a 10 kohm is selectable in the configuration.h. This gives me a temperature of 7°c where it should be around 23°C. The thermistor on the hotend is giving the correct value.
Allso the fan on the hotend is connected to D9 on RAMPS, but doesn't start when i'm heating the hotend.

I'm still waiting for my glass plate and springs to level my bed to really start printing.

Any ideas to solve this?

Edited 1 time(s). Last edit at 10/22/2015 05:19AM by Nicken83.

Hi,

Check this out : [www.thingiverse.com]
D9 is not for the extruder's fan, but for parts colling fan.
The extruder's fan needs to be powered permanently :
directly on the PSU or 12V-aux power (near D2) on the ramps (middle lower left) :


++JM

Edited 2 time(s). Last edit at 11/02/2015 05:04AM by J-Max.