3d printing questions
10 Jan 2022 22:49 #231355
by tommylight
Replied by tommylight on topic 3d printing questions
Heaters are easy as they just need PWM, thermistors do require analog inputs with ADC, sooo....
Most here are using Remora with 3D printer boards/RPI so they come with analog inputs.
One way of doing ADC is to use an arduino nano or whatever and have them read the thermistors and report that as frequency to LinuxCNC via encoder counters, requires only two inputs on parallel port or Mesa boards.
For the more adventurous, there are always on every PC and RPI two analog inputs left unused, namely the Audio inputs. They are usually only 1Vpp, but quite high resolution and sampling rate.
No clue on how to read that in LinuxCNC, yet, no time to play.
Most here are using Remora with 3D printer boards/RPI so they come with analog inputs.
One way of doing ADC is to use an arduino nano or whatever and have them read the thermistors and report that as frequency to LinuxCNC via encoder counters, requires only two inputs on parallel port or Mesa boards.
For the more adventurous, there are always on every PC and RPI two analog inputs left unused, namely the Audio inputs. They are usually only 1Vpp, but quite high resolution and sampling rate.
No clue on how to read that in LinuxCNC, yet, no time to play.
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18 May 2022 03:36 #243244
by frede7
Replied by frede7 on topic 3d printing questions
Thanks, everyone for this helping content.
I'm trying to print with PETG filament. I printed with PLA before without issues. But with PETG I have some kinda blobby printing even on the first layer. I can't properly describe it so adding a photo.
Does this photo rings the bell to anybody? Is the nozzle/bed temperature too high or low? or its the moisture issue? or something else? or just a bad filament brand?
This is Voxelab Aquila 3D printer and 1.75mm PETG filament.
filament manufacture suggested nozzle temperature is 200-220°C, im printing at 215
suggested bed temp 60-80°C im printing at 80
my room temperature is 70F and humidity is 53%.
I opened the filament pack yesterday. so it shouldn't be too moist.
I'm trying to print with PETG filament. I printed with PLA before without issues. But with PETG I have some kinda blobby printing even on the first layer. I can't properly describe it so adding a photo.
Does this photo rings the bell to anybody? Is the nozzle/bed temperature too high or low? or its the moisture issue? or something else? or just a bad filament brand?
This is Voxelab Aquila 3D printer and 1.75mm PETG filament.
filament manufacture suggested nozzle temperature is 200-220°C, im printing at 215
suggested bed temp 60-80°C im printing at 80
my room temperature is 70F and humidity is 53%.
I opened the filament pack yesterday. so it shouldn't be too moist.
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