Going CPAP

[3dCase]

Hi all,
Decided to go CPAP with my next extruder hotend combo that I am designing to fit my Voron V2.4.
Has anybody here done this and knows of all the pitfalls and hurdles?
I bought a WS7040 that comes with some control board for PWM driving, but the instructions are dismally incomplete and confusing. See attached screenshot.
Would appreciate it if somebody here who had already done this could share their wisdom.

 

[NoGuru]

Hi all,
Decided to go CPAP with my next extruder hotend combo that I am designing to fit my Voron V2.4.
Has anybody here done this and knows of all the pitfalls and hurdles?
I bought a WS7040 that comes with some control board for PWM driving, but the instructions are dismally incomplete and confusing. See attached screenshot.
Would appreciate it if somebody here who had already done this could share their wisdom.

I have not gone CPAP since it is loud and is needed for high speeds and material that requires lots of cooling. I mostly print ASA so I don't need that sort of cooling.
This might be a better question on Discord since that is where the guys doing more extreme mods like this hang out.

 

[3dCase]

I have not gone CPAP since it is loud and is needed for high speeds and material that requires lots of cooling. I mostly print ASA so I don't need that sort of cooling.
This might be a better question on Discord since that is where the guys doing more extreme mods like this hang out.

I want to have the possibility of more cooling while also have the nozzle in clear sight. I find the bulky ducts blocking view from all angles a hindrance. I like to see what it is doing.
I understand what you are saying, but it isn't the extreme use I want to do it for tbh. I do print a lot in HD PLA and that does need a lot of cooling so if you want to go even a little faster then average, the cooling with just a 5015 or a 4020 fan you quickly run into the wall.
I think I found some stuff here and there, both on the voron design pages as well as reddit and even klipper github. I am sure I will run into trouble with it and I will be back here
For now waiting for it to arrive, which is the most frustrating thing ever when you really need to have the things in your hands before you can print the parts.
Thanks anyway, as always.
It seems a bit quiet here, must be the holidays.....

 

[Sanity Agathion]

You can try taking a look at Archetype toolhead ecosystem from Armchair Heavy Industries. It includes cpap option too, but other high airflow solutions I.e. with server fans are available too. https://github.com/Armchair-Heavy-Industries/Archetype

 

[NoGuru]

Yeah I see what you are saying. Sanity has a great option with the Armchair guys. Here is a link to there Discord https://discord.gg/8uT2Zb9v
Super friendly and knowledgeable people.

 

[Durahl]

I've recently added CPAP to my Build using the Bondtech Wiring Guide and so far, had no issues with it.

 

[3dCase]

I've recently added CPAP to my Build using the Bondtech Wiring Guide and so far, had no issues with it.

yup that is the one I am going to try to use.

 

[3dCase]

I've recently added CPAP to my Build using the Bondtech Wiring Guide and so far, had no issues with it.

Ok so I got my machine back up and working, still all the calibrations to do. Yesterday I hooked up the cpap to 24 VDC and the signal to PG12, as per the bondtech manual. At first it did not work because I put the 24 volt to the parts fan. When I switched it to the permanent 24 volt fan output it worked. When I give no signal it stops and at all the % in between to max it responds with some delay.
But, that was yesterday on a system that had already booted up. Today I boot up and the cpap fan comes on immediately and goes off when the PI is ready with its startup. Very annoying methinks.
What can I have done wrong to cause this, as I assume this is not its normal behaviour?