Wirelessly control your 3D Printer - OctoPrint Tutorial - 3D Printing Beginners Guide (Software)
video description
At 4: 30 you discuss the LED circuit, 2 x 22ohm resistors in parallel with a 10mm white LED in series with them. You then go on to say it's powered by 5v.
This produces an equivalent resistance per LED of 11ohms.
White LED's have a Vf of 3. 3 and a forward current of about 30mA.
5-3. 3/11=. 154A or 154mA.
That is 5 times the Forward current.
However 3. 3. 154=0. 5W.
Are these non standard LED's which can handle a higher current provided they stay below the half Watt?
I have not come across these yet and if I have I must be under driving them significantly.
Date: 2020-09-05
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Comments and reviews: 5
meesternadim
I followed your tutorial and used the same mini buck converter, but after turning on the 3d printer psu and connecting the raspberry pi to the arduino, the voltage regulator on the arduino gets very hot. if I disconnect the raspberry pi, it cools down. I think somehow the rasperry pi is drawing current from the arduino? The pi is still powered on if I disconnected from the arduino. Strange.
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I followed your tutorial and used the same mini buck converter, but after turning on the 3d printer psu and connecting the raspberry pi to the arduino, the voltage regulator on the arduino gets very hot. if I disconnect the raspberry pi, it cools down. I think somehow the rasperry pi is drawing current from the arduino? The pi is still powered on if I disconnected from the arduino. Strange.
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Arkadiusz
IMO you should play a little with retraction parameter in your slicer program so you can get better results of printing w/o filament spaghetti everywhere. For my own fast (80mm) short (3mm) retraction in slic3r works best. Thanks for idea of power supply raspberry!
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IMO you should play a little with retraction parameter in your slicer program so you can get better results of printing w/o filament spaghetti everywhere. For my own fast (80mm) short (3mm) retraction in slic3r works best. Thanks for idea of power supply raspberry!
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Stanislav
Did you try to put cooling fans around nozzle to stop stringing. If not give it a try. I have the same problem and putting extra fans helped a lot and now i dont need to clean my prints from string chaos. :D
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Did you try to put cooling fans around nozzle to stop stringing. If not give it a try. I have the same problem and putting extra fans helped a lot and now i dont need to clean my prints from string chaos. :D
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Top
Depending on the printer you have, it might have a USB B port. Would that be just as useful with the Raspberry Pi as your DIY wiring? That way I can start prints through a network.
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Depending on the printer you have, it might have a USB B port. Would that be just as useful with the Raspberry Pi as your DIY wiring? That way I can start prints through a network.
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Will
If you fiddle with your retraction settings and maybe lower your temperature / increase fan speed you won't get as much stringing to clean up afterwards
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If you fiddle with your retraction settings and maybe lower your temperature / increase fan speed you won't get as much stringing to clean up afterwards
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