andrew.r4
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Re: OctoPrint on MK3?

Thu Nov 16, 2017 4:13 pm

rob.a4 wrote:
Tue Nov 14, 2017 10:36 pm
Hi There,

My first 3d Printer and I choose the MK3. I am waiting for it to arrive and plan on installing the octoprint Zero W board. I would like to add the camera as well so I was looking for extended flex cables to work. I found these ....

https://www.amazon.com/Makerfocus-Raspb ... TTZ7M&th=1

These should be long enough to place the camera in a good spot. Maybe someone will make a shielded round cable version as well. To long of cable and you may induce noise into the video.

I assume that you can use the 8Mb pixel camera on this Zero W, MK3 system?
https://www.amazon.com/gp/product/B01ER ... UTF8&psc=1

Looking forward to the MK3 printing experience!

Cheers,
Rob
Michigan
From my research so far:
1) yes, 8MP camera works with pi zero
2) noise happens at shorter distance with 8MP camera (~4ft or 4m vs 8ft or 8m) Sorry don't remember the distance, but its longer than what matters for our application
3) HDMI cables will allow you to go further than using the flex cable extender without loss of signal.
4) I don't think 1 30cm cable will be long enough. The Einsy board is on the left, pi zero mounted higher end of it. You need to run the cable out of the case, under the printer at least the length of the bed of 21cm and then up to the camera which will be elevated off the printer a few cm. I just don't think 1 cable will be long enough. I purchased 2 18' cables for my 2 printers. My pi on the first printer is mounted under the desk so I just need it to go the length of the Ikea end table. I can relocate that pi though to inside the box if it isn't long enough, but I would need to get a fan for it as I don't want to overheat it.

jweaver
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Re: OctoPrint on MK3?

Thu Nov 16, 2017 5:17 pm

andrew.r4 wrote:
Thu Nov 16, 2017 4:13 pm

4) I don't think 1 30cm cable will be long enough. The Einsy board is on the left, pi zero mounted higher end of it. You need to run the cable out of the case, under the printer at least the length of the bed of 21cm and then up to the camera which will be elevated off the printer a few cm. I just don't think 1 cable will be long enough. I purchased 2 18' cables for my 2 printers. My pi on the first printer is mounted under the desk so I just need it to go the length of the Ikea end table. I can relocate that pi though to inside the box if it isn't long enough, but I would need to get a fan for it as I don't want to overheat it.
Does the camera have to be on the bed? Could it not be close to the Pi? Looking down at the bed?

andrew.r4
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Re: OctoPrint on MK3?

Thu Nov 16, 2017 5:48 pm

jweaver wrote:
Thu Nov 16, 2017 5:17 pm
andrew.r4 wrote:
Thu Nov 16, 2017 4:13 pm

4) I don't think 1 30cm cable will be long enough. The Einsy board is on the left, pi zero mounted higher end of it. You need to run the cable out of the case, under the printer at least the length of the bed of 21cm and then up to the camera which will be elevated off the printer a few cm. I just don't think 1 cable will be long enough. I purchased 2 18' cables for my 2 printers. My pi on the first printer is mounted under the desk so I just need it to go the length of the Ikea end table. I can relocate that pi though to inside the box if it isn't long enough, but I would need to get a fan for it as I don't want to overheat it.
Does the camera have to be on the bed? Could it not be close to the Pi? Looking down at the bed?
Sure, but if you want sweet timelapse videos which Octoprint is awesome for, then you will want it on the bed. This way you get to see the objects stationary and build up vs a blur going back and forth. For the sole purpose of monitoring a live print, it doesn't matter.

jweaver
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Re: OctoPrint on MK3?

Thu Nov 16, 2017 6:01 pm

andrew.r4 wrote:
Thu Nov 16, 2017 5:48 pm
jweaver wrote:
Thu Nov 16, 2017 5:17 pm
andrew.r4 wrote:
Thu Nov 16, 2017 4:13 pm

4) I don't think 1 30cm cable will be long enough. The Einsy board is on the left, pi zero mounted higher end of it. You need to run the cable out of the case, under the printer at least the length of the bed of 21cm and then up to the camera which will be elevated off the printer a few cm. I just don't think 1 cable will be long enough. I purchased 2 18' cables for my 2 printers. My pi on the first printer is mounted under the desk so I just need it to go the length of the Ikea end table. I can relocate that pi though to inside the box if it isn't long enough, but I would need to get a fan for it as I don't want to overheat it.
Does the camera have to be on the bed? Could it not be close to the Pi? Looking down at the bed?
Sure, but if you want sweet timelapse videos which Octoprint is awesome for, then you will want it on the bed. This way you get to see the objects stationary and build up vs a blur going back and forth. For the sole purpose of monitoring a live print, it doesn't matter.
I still figured that if it were mounted looking down, you could still do a timelapse, but just from a different perspective.. It wouldn't be looking straight down.. But somewhere between the Pi and the Bed...

andrew.r4
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Re: OctoPrint on MK3?

Fri Nov 17, 2017 1:10 am

jweaver wrote:
Thu Nov 16, 2017 6:01 pm
andrew.r4 wrote:
Thu Nov 16, 2017 5:48 pm
jweaver wrote:
Thu Nov 16, 2017 5:17 pm


Does the camera have to be on the bed? Could it not be close to the Pi? Looking down at the bed?
Sure, but if you want sweet timelapse videos which Octoprint is awesome for, then you will want it on the bed. This way you get to see the objects stationary and build up vs a blur going back and forth. For the sole purpose of monitoring a live print, it doesn't matter.
I still figured that if it were mounted looking down, you could still do a timelapse, but just from a different perspective.. It wouldn't be looking straight down.. But somewhere between the Pi and the Bed...
https://www.youtube.com/watch?v=9ZlVfT-A74E
He goes over why you want to bed mount vs frame mount for timelapse.

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michael.m63
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Re: OctoPrint on MK3?

Fri Nov 17, 2017 7:14 am

Okay, just ordered a 2 meter cable.

jweaver
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Re: OctoPrint on MK3?

Fri Nov 17, 2017 8:00 am

michael.m63 wrote:
Fri Nov 17, 2017 7:14 am
Okay, just ordered a 2 meter cable.
Can you give a link to such a thing?

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michael.m63
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Re: OctoPrint on MK3?

Fri Nov 17, 2017 8:27 am

jweaver wrote:
Fri Nov 17, 2017 8:00 am
michael.m63 wrote:
Fri Nov 17, 2017 7:14 am
Okay, just ordered a 2 meter cable.
Can you give a link to such a thing?
I ordered this one:
https://www.amazon.de/dp/B072N4J7HW/ref ... dAbW11KPTT

jweaver
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Re: OctoPrint on MK3?

Fri Nov 17, 2017 10:02 am

michael.m63 wrote:
Fri Nov 17, 2017 8:27 am
jweaver wrote:
Fri Nov 17, 2017 8:00 am
michael.m63 wrote:
Fri Nov 17, 2017 7:14 am
Okay, just ordered a 2 meter cable.
Can you give a link to such a thing?
I ordered this one:
https://www.amazon.de/dp/B072N4J7HW/ref ... dAbW11KPTT
Ahhh.. I see.. So for a Pi, not Pi Zero?

I am not sure whether there is a long cable for the Zero, so for now, I am not sure whether we are going to get much flexibility on the location of camera.

jweaver
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Re: OctoPrint on MK3?

Fri Nov 17, 2017 10:03 am

andrew.r4 wrote:
Fri Nov 17, 2017 1:10 am

He goes over why you want to bed mount vs frame mount for timelapse.
Right after I replied yesterday I looked at some videos and immediately noticed the difference and realised the need to mount the camera to the bed.

I like the idea of Time-Laps but I suspect the novelty will wear off, and really want to use the camera for monitoring, so I might just stick with the 30cm cable and mount it looking down.

Then, one day if a longer cable appears for the Pi Zero, I could re-visit this and move the camera.

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