SoliForum - 3D Printing Community — Is the circuit board on the extruder necessary?

Re: Is the circuit board on the extruder necessary?

null@example.com (peteropletal) — Fri, 21 Jul 2017 21:58:10 +0000

Hi Guys. I removed the extruder board, added plugs fit the thermistor and fan and tucked the other wired away*after insulating them. everything seemed perfect, I was testing the extruder temp change by holding the extruder. I can't remember what the normal default temp readings are on the display with nothing plugged in, II think 20c. A problem arose, at what point I'm not sure but now my display constantly reads 158c on the bed and 106c respectively when cold. what also seems weird is that when I preheat my extruder, my bed temp goes up. Any ideas?. I tried re - flashing my printer to no avail, different display setup but same problem.

Re: Is the circuit board on the extruder necessary?

null@example.com (kszwab) — Fri, 13 Jan 2017 14:37:33 +0000

This was very interesting and useful information.

However, terms like "resister" and "thermoister" make it very funny, also.

Re: Is the circuit board on the extruder necessary?

null@example.com (kastengeist) — Sat, 07 Jan 2017 00:38:33 +0000

Ok thank you! that's what i thought.

Re: Is the circuit board on the extruder necessary?

null@example.com (carl_m1968) — Fri, 06 Jan 2017 23:35:20 +0000

If you have Repetier firmware and you are using the normal 100K thermistor that comes with the E#D the you can just wire it straight to the Mainboard thermistor input or the Mainboard side of the small extruder board. The small board has a resistor on it that causes normal Thermistors to read wrong if you connect them to the side the stock Thermistor was connected to. So you must bypass the small board.

Re: Is the circuit board on the extruder necessary?

null@example.com (kastengeist) — Fri, 06 Jan 2017 23:23:36 +0000

hmm okay well how the heck can I attach the stock one to the new e3dv6 heat block, this one I have has the cartridge. also i am on repetier .92

Re: Is the circuit board on the extruder necessary?

null@example.com (carl_m1968) — Fri, 06 Jan 2017 21:52:51 +0000

The stock firmware will not work correctly with any thermistor but a stock one. Likewise the stock thermistor is an oddball and there is no table that works exactly in Marlin or Repetier firmware.

Re: Is the circuit board on the extruder necessary?

null@example.com (kastengeist) — Fri, 06 Jan 2017 19:59:19 +0000

I Have an 1.0 and just put in the v6 and wired it all up. I have the new thermistor cartridge that comes with the v6, from what I gather, all i need to do is wire it directly to the yellow and black wires on the pcb of the extruder assembly? As of right now, the readings are way off using the existing connection.

Re: Is the circuit board on the extruder necessary?

null@example.com (scobo) — Sun, 21 Feb 2016 18:49:48 +0000

efes wrote:

oscahie wrote:
So here is the definitive mapping for the da vinci 1.0:
fan (+): green
fan (-): blue
thermistor (no polarity): black and yellow
Strangely, there does not seem to be a resistor for the thermistor on my 1.0 either, since both the black and the yellow pins on the PCB have zero resistance to the thermistor leads. It was my understanding that there was a resistor on all old models... I guess not!
edit: ah, I understand now. The resistor I had read about is actually on the main control board, not in this little PCB. That resistor is the one that messes up with the standard thermistor tables for a 100k (#8 for the E3D) and so requires a custom table (#5) instead.
hello
Are you sure that this is the thermistor (no polarity): black and yellow on this pin ?
thx help

Just replied to your other post but yes, it's black and yellow for the thermistor.
I removed the pcb a while ago and wired my thermistor directly to black and yellow.

Re: Is the circuit board on the extruder necessary?

null@example.com (carl_m1968) — Sun, 21 Feb 2016 16:56:52 +0000

efes wrote:

oscahie wrote:
So here is the definitive mapping for the da vinci 1.0:
fan (+): green
fan (-): blue
thermistor (no polarity): black and yellow
Strangely, there does not seem to be a resistor for the thermistor on my 1.0 either, since both the black and the yellow pins on the PCB have zero resistance to the thermistor leads. It was my understanding that there was a resistor on all old models... I guess not!
edit: ah, I understand now. The resistor I had read about is actually on the main control board, not in this little PCB. That resistor is the one that messes up with the standard thermistor tables for a 100k (#8 for the E3D) and so requires a custom table (#5) instead.
hello
Are you sure that this is the thermistor (no polarity): black and yellow on this pin ?
thx help

Measure between them. You should should get close to 100K at room temp. If not then wrong wires.. But if
I remember correctly that sounds right..

Re: Is the circuit board on the extruder necessary?

null@example.com (efes) — Sun, 21 Feb 2016 14:02:58 +0000

oscahie wrote:

So here is the definitive mapping for the da vinci 1.0:
fan (+): green
fan (-): blue
thermistor (no polarity): black and yellow
Strangely, there does not seem to be a resistor for the thermistor on my 1.0 either, since both the black and the yellow pins on the PCB have zero resistance to the thermistor leads. It was my understanding that there was a resistor on all old models... I guess not!
edit: ah, I understand now. The resistor I had read about is actually on the main control board, not in this little PCB. That resistor is the one that messes up with the standard thermistor tables for a 100k (#8 for the E3D) and so requires a custom table (#5) instead.

hello

Are you sure that this is the thermistor (no polarity): black and yellow on this pin ?

thx help

Re: Is the circuit board on the extruder necessary?

null@example.com (oscahie) — Sat, 04 Apr 2015 09:43:20 +0000

So here is the definitive mapping for the da vinci 1.0:

fan (+): green
fan (-): blue
thermistor (no polarity): black and yellow

Strangely, there does not seem to be a resistor for the thermistor on my 1.0 either, since both the black and the yellow pins on the PCB have zero resistance to the thermistor leads. It was my understanding that there was a resistor on all old models... I guess not!

edit: ah, I understand now. The resistor I had read about is actually on the main control board, not in this little PCB. That resistor is the one that messes up with the standard thermistor tables for a 100k (#8 for the E3D) and so requires a custom table (#5) instead.

Re: Is the circuit board on the extruder necessary?

null@example.com (Mecha_Pants) — Fri, 03 Apr 2015 21:04:45 +0000

This may just be my experience with replacing my extruder thermistor, but in the older stock DaVinci 1.0's thermistor turned out to be a 2mm 200k glass encapsulated thermistor, the 100k thermistor I installed first did not read correctly as a stock part replacement.

Re: Is the circuit board on the extruder necessary?

null@example.com (leenanj) — Fri, 03 Apr 2015 20:22:47 +0000

oscahie wrote:

leenanj wrote:
Not exactly sure what your asking here.
I eliminated the pc board couple of months ago.
And on the 1.0A there is no thermistor resister, can't speak for the older models.
Check your wiring if its not working without the pc board.
PS. This wiring code is for the 1.0A, older could be different.
Hi leenanj,
I'm also trying to get rid of the PCB on my 1.0 and your color mapping is certainly not right for that model. I've already figured out the wires for the fan, but not for the thermistor. One of its leads has connectivity to 3 of the pins in the large connector, with different resistance values, so I'm not sure which is the right one... any ideas? I don't seem to be able to trace it in the board either... I'm just not an expert in this

I have the 1.0A so can't help you much.
If there is a resister then the stock thermistor must be different than the standard 100k and would need to be changed.

Most guys here have the 1.0 so maybe they can chime in with the correct colors.

Since you have the fan wires maybe eliminate the three wires going to the filament sensor.

Re: Is the circuit board on the extruder necessary?

null@example.com (oscahie) — Fri, 03 Apr 2015 20:08:36 +0000

leenanj wrote:

Not exactly sure what your asking here.
I eliminated the pc board couple of months ago.
And on the 1.0A there is no thermistor resister, can't speak for the older models.
Check your wiring if its not working without the pc board.
PS. This wiring code is for the 1.0A, older could be different.

Hi leenanj,

I'm also trying to get rid of the PCB on my 1.0 and your color mapping is certainly not right for that model. I've already figured out the wires for the fan, but not for the thermistor. One of its leads has connectivity to 3 of the pins in the large connector, with different resistance values, so I'm not sure which is the right one... any ideas? I don't seem to be able to trace it in the board either... I'm just not an expert in this

Re: Is the circuit board on the extruder necessary?

null@example.com (Flyboy55) — Fri, 03 Apr 2015 16:23:26 +0000

I am working with an older model 1.0.

I guess what I'm really asking is if the fan and thermoister are not working would this be the soultion? Or is there another problem my noob butt is missing. I was thinking possible defective extruder circuit board.