SquirrelFan - 5015 fan (updated Dec 2024)

included with patronage --- dec 2024 update : added different wire out position on the fan case and FYI the Apollo2025 has full support for a symmetrical fan setup ---- WARNING: I will not be responsible for any injuries! Be warned we are talking about fans that can spin at 20K~30K RPM The blades I designed are attached on top and bottom by a ring for strength. But if you design a fan blade like standard 5015 that are only attached at the bottom, I would be afraid of them flying off from the high centrifugal force. ----- These need: a specific motor - 2.5~4USD an ESC (electronic speed controller) - 3~12USD two type of screws, four of each ( m1.4x3 and m2x3 both countersunk type) 5amp buck convert per motor - 3USD optionally a pi pico (5 USD, check official retailer listed on raspberry pi website, other places are overpriced) with Klipper on it, or a free PWM port on the printer board, currently using the middle pin of the bltouch port. ========== Motor - Micro 1104 4300KV ======== - Motor (or any other sellers you find that sell these, Micro 1104 4300KV, as long as they are exactly the same the are this one, there are similar sized one with small difference, but this is not designed for those): https://www.aliexpress.us/item/3256805971807081.html https://www.aliexpress.us/item/3256803954722759.html ========== ESC (electronic speed controller) ======== One ESC per motor This ESC worked from 4.2v to 5.1v, on a 25watt 5v PSU (voltage define the max speed, 4300rpm per volt): - https://www.aliexpress.us/item/3256805913773225.html These Esc worked at voltage between 5v and 8.4v, but will work better above 6v - 12amp model, https://www.aliexpress.us/item/3256805028458826.html - 10amp model, https://www.aliexpress.us/item/3256803041698619.html Only worked at 6v~8.4v, but would do 6.4v minimum, 8,4v is totally fine, higher voltage = higher max fan speed. - 20 amp model, https://www.aliexpress.us/item/2251832793301329.html <- this is my favorite noise wise, but has instant breaks, which isn't good for the buck converter, but hasn't burned out so might be ok as is, a firmware update will solve that, but that requires another board to flash it, will post more info soon once I go through the flashing. - 20 amp model, https://www.aliexpress.us/item/3256806226017420.html <--this is supposedly one of the better one of the lot here in term of reliability, but had a high pitch at 12khz that I didn't like ========== Bottom Screws - four M1.4x3mm======== M1.4x3mm countersunk - torx head https://www.aliexpress.us/item/3256805610161003.html M1.4x3mm countersunk - philips https://www.aliexpress.us/item/3256805105462100.html M1.2x3mm flat heat - philips https://www.aliexpress.us/item/3256805084387535.html ========== Top Screws - four M2x3mm counter sunk ======== M2x3mm countersunk - philips head https://www.aliexpress.us/item/3256804078422852.html M2x3mm countersunk - torx head https://www.aliexpress.us/item/3256805610161003.html ========== buck converter ======== Buck converter (powered from the 24v PSU) 5A XL4015 https://www.aliexpress.us/item/2251832462782484.html 1 buck converter per fan to play it safe ======= optional pi pico 5 USD ========== Look for official retailer here: https://www.raspberrypi.com/products/raspberry-pi-pico/ Most other places inflated the price a lot This would run klipper as if it was a secondary printer board