# New problems **URL:** \ **Category:** 3d Printing / Slicers / Setup / Problems\ **Created:** [August 16, 2020, 2:26am UTC](https://forum.makewithtech.com/t/new-problems/2573 "2020-08-16T02:26:34Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Ender5r](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@Ender5r](https://forum.makewithtech.com/u/Ender5r)\ **Post date:** [August 16, 2020, 2:26am UTC](https://forum.makewithtech.com/t/new-problems/2573/1 "2020-08-16T02:26:34Z")
Been an interesting few days. I mentioned in another post that my printer has started doing a weirdness: every 2nd print, or nearly every 2nd one, instead of actually printing, it just sits at the home position and spits out filament as fast as it can, so fast the extruder chatters. If I power cycle the printer, or cause the controller to reset by unplugging the USB cable then plugging it back, the next print will virtually always work. Obviously though, it does mean something is off, but what? Today I got to tracking it down. There were several candidates: [LIST=1] - the printer's controller (some of you may recall me mentioning how I accidentally let some of the magic smoke out a couple of months ago); - the Surface Pro I've been using to control the printing; - However, with the new computer, a new problem occurred: the printing would pause, for no known reason, for 3 or 4 seconds, then pick up again. ---
**Author:** ![Leo](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.makewithtech.com/leo/32/30_2.png) [@Leo](https://forum.makewithtech.com/u/Leo)\ **Post date:** [August 20, 2020, 9:34am UTC](https://forum.makewithtech.com/t/new-problems/2573/2 "2020-08-20T09:34:55Z")
the pictures are not visible. ---
**Author:** ![Geit](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.makewithtech.com/geit/32/44_2.png) [@Geit](https://forum.makewithtech.com/u/Geit)\ **Post date:** [August 20, 2020, 9:56am UTC](https://forum.makewithtech.com/t/new-problems/2573/3 "2020-08-20T09:56:28Z")
> [@Ender5r](#): > > I see on Amazon that BTT 1.3 & 1.4 boards do support multiple extruders, but are they good? The BTT boards have changeable driver chips (chopsticks), which make it easy to be replaced, when something goes wrong. It may be a little more expensive, but as the drivers, beside the mosfets, are the only component on the board, which can really be forced to its limits, I would always go that way. In the end you can always swap/replace single drivers to find out where a problem is located. I also would recommend to go for the 2209 chips, which are a combination of everything before with the complete range of features. CoolStep and StallGuard, features you maybe later on will interested in, are not available with the 2208. You even can mix them if you want it cheap. You can use TMC2209 for X and Y and crappy A4489 for Z and E1/E2. The boards itself are great. Build quality and accessibility. Firmware update is done by the boards itself. Just write the firmware.bin onto the SD card and power the board up. Done. No need for serial adapters or external tools. All potential features are available via jumper, were on other solutions you need wire harnesses or extra stuff. And the best is you even get a small yellow rubber duck to play in the bath tub. 😃 ---
**Author:** ![Ender5r](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@Ender5r](https://forum.makewithtech.com/u/Ender5r)\ **Post date:** [August 20, 2020, 12:49pm UTC](https://forum.makewithtech.com/t/new-problems/2573/4 "2020-08-20T12:49:06Z")
> [@Leo](#): > > the pictures are not visible. I got the “your post requires administrative approval” message on this post, so I copied the contents and made a new post with them. I find the criteria for requiring admin approval are set too sensitive. ---
**Author:** ![Vassili\_Finellis](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.makewithtech.com/vassili_finellis/32/12_2.png) [@Vassili\_Finellis](https://forum.makewithtech.com/u/Vassili_Finellis)\ **Post date:** [August 20, 2020, 6:51pm UTC](https://forum.makewithtech.com/t/new-problems/2573/5 "2020-08-20T18:51:30Z")
> [@Ender5r](#): > > Been an interesting few days. I mentioned in another post that my printer has started doing a weirdness: every 2nd print, or nearly every 2nd one, instead of actually printing, it just sits at the home position and spits out filament as fast as it can, so fast the extruder chatters. If I power cycle the printer, or cause the controller to reset by unplugging the USB cable then plugging it back, the next print will virtually always work. Obviously though, it does mean something is off, but what? > > Today I got to tracking it down. There were several candidates: [LIST=1] > > - the printer's controller (some of you may recall me mentioning how I accidentally let some of the magic smoke out a couple of months ago); > - the Surface Pro I've been using to control the printing; > - However, with the new computer, a new problem occurred: the printing would pause, for no known reason, for 3 or 4 seconds, then pick up again. Big Tree Tech produce the SKR series succesfully. SKR 1.4 TURBO is the best they ever create. Use this one combining with TMC 2209 in UART mode and you’ll have a robust BOB. It supports multiple extruders as well. Marlin or REPRAP fw. ---
**Author:** ![Ender5r](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@Ender5r](https://forum.makewithtech.com/u/Ender5r)\ **Post date:** [August 20, 2020, 6:57pm UTC](https://forum.makewithtech.com/t/new-problems/2573/6 "2020-08-20T18:57:34Z")
I’m considering it. Before I commit I have to check out this whole “sensorless homing” topic.