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MK2a Heating bed wiring question
Posted: Wed Feb 11, 2015 12:38 pm
by Zorce
Greetings, I recently bought the Geeetech Acrylic Prusa i3 Kit and I am at the heating bed wiring.
I understand where the thicker heater wires need to be soldered to but for the life of me, I can not understand how the thermometry wire ( i am assuming that is what it is) is mounted. In the picture it looks like it is taped to the middle of the heat bed. The only other wires in the numbered bag (part 41) has what looks like a jst connector on both ends yet the wire taped in the picture looks to have no connectors. This confuses me. I watched a few youtube videos where this wire was called the ("thermistor") however in my instructions it says that the thermistor is "attached on the bed"? Am I missing something? I am totally confused on what to do with the smaller wiring and how it goes on the bed.
Thanks
Re: MK2a Heating bed wiring question
Posted: Wed Feb 11, 2015 4:15 pm
by harry_chen
Hi Zorce

- heatbed.GIF (162.7 KiB) Viewed 16798 times
Heater wires, thermometry wire and thermistor, they all soldered on the heat bed,
you just connect the other end to the main board.
And show me the photo of your heat bed if there is sth lost.
Sincerely
Harry
Re: MK2a Heating bed wiring question
Posted: Wed Feb 11, 2015 6:04 pm
by Zorce
Solder to what? I see no solder points in the middle of the board. Just a single hole. And the the wires in my package have plastic connectors on them. I see no thermistor.

- rps20150211_040240.jpg (58.11 KiB) Viewed 16795 times
Re: MK2a Heating bed wiring question
Posted: Wed Feb 11, 2015 6:08 pm
by Zorce
Solder what? I see no solder points in the middle of the board. I have the same bed as the pic you posted. I cant see much with the wire in the middle because of the tape. The cables I got for this part, all have plastic connectors on the ends.
I see no thermistor.
Re: MK2a Heating bed wiring question
Posted: Wed Feb 11, 2015 6:09 pm
by Zorce
Is there some reason that every post has to be approved? This seems like it would slow the trouble shooting process?????
Re: MK2a Heating bed wiring question
Posted: Thu Feb 12, 2015 9:45 am
by harry_chen
I'm sorry they were not soldered. So you have to solder them by yourself.
And this is the thermistor, please check whether you have it or not (It should be there).

- thermistor.jpg (36.51 KiB) Viewed 16786 times
Then sold it to the wires, and paste it on the heat bed with a gummed tape.
Re: MK2a Heating bed wiring question
Posted: Thu Feb 12, 2015 2:05 pm
by Zorce
Unfortunately I don't anything that looks like a thermistor. In fact there isn't one even listed in my inventory book that came with my kit that has all the items listed and numbered. The instructions say that the thermistor is "attached to the bed"????

- rps20150212_000151.jpg (17.31 KiB) Viewed 16782 times

- rps20150212_000416.jpg (23.26 KiB) Viewed 16782 times
Re: MK2a Heating bed wiring question
Posted: Thu Feb 12, 2015 3:50 pm
by harry_chen
Sorry for that.
You can provide us your order ID, we'll resend it to you.
However it may take a long time to transport--more than a week.
So I think you can buy one from a local electronic shop, if possible. It's cheap and faster.
http://www.geeetech.com/10pcs-100kohm-n ... p-632.html
About the slow progress, it's not because of the approval, but the time difference--we're not working at the same time
Best regards
Re: MK2a Heating bed wiring question
Posted: Thu Feb 12, 2015 7:54 pm
by Zorce
Already had to wait for missing rods. I am starting to see a trend here and starting to wonder if I will ever get this assembled.
Why wasn't it in the parts inventory book?
Re: MK2a Heating bed wiring question
Posted: Fri Feb 13, 2015 2:42 pm
by harry_chen
Hi
It's in a plastic bag and "attached on the bed" before.
And it's indeed too small to find, so we solder it to the wire and paste them on the heat bed now.