VOGONS


First post, by Blavius

User metadata
Rank Member
Rank
Member

Hi all,

I got a POD83 without a fan, and wanted to make something that matched the original and didn't modify the POD.
It's a model in FreeCAD that takes a 5Volt 40mm fan and connects to the POD with a set of pogo pins. The POD is aware of the fan because of a 1kOhm resistor.
The model consists of two parts; the main mount, and the pogo-pin holder.

The attachment model.png is no longer available
The attachment model2.png is no longer available

This is what it looks like assembled and on the POD:

The attachment IMG_7911_small.jpg is no longer available
The attachment IMG_7915_small.jpg is no longer available

Parts list:
-1x Noctua NF-A4x20 5V
-3x pogo pins 5mm long, 1.5mm diam (https://nl.aliexpress.com/item/1005006095992803.html)
-1x 1kOhm trough-hole resistor

Build instructions:
1. Mount the fan with the screws included in the Noctua kit.
2. Clip the wires. Be careful to keep enough length to assemble easily.
3. Strip the red and black wires. Not yellow- not used in this project.
4. Solder pogo pins to red and black
5. Solder the resistor to the pogo pin with the black wire. Then solder another pogo pin to the other side of the resistor.
6. Use pliers to press the pins in the pogo-pin holder. Use schematic below, this represents the pads of the POD as seen from the top. Be careful not to bend them or break the wire off-you cant solder once they are in the holder, it will melt!
7. Press the pogo pin holder in the main model.
8. Click on POD. Might need to trim a bit with an x-acto here and there.

-----------------------
| BLK(gnd) Fan(1k resistor to gnd)
|
| RED(5V)
|

I hope this is of benefit.

FreeCad projects and STL files for printing:

The attachment 3d_models.zip is no longer available

Reply 1 of 4, by cloverskull

User metadata
Rank Newbie
Rank
Newbie

Wow, this is great. I have the original fan, etc., but am wondering now how this performs in comparison. Very nicely done.

Reply 2 of 4, by H3nrik V!

User metadata
Rank Oldbie
Rank
Oldbie

Double post

Last edited by H3nrik V! on 2024-12-16, 22:53. Edited 1 time in total.

If it's dual it's kind of cool ... 😎

--- GA586DX --- P2B-DS --- BP6 ---

Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀

Reply 3 of 4, by H3nrik V!

User metadata
Rank Oldbie
Rank
Oldbie

You may want to post that here: Retro 3D print topic as well

If it's dual it's kind of cool ... 😎

--- GA586DX --- P2B-DS --- BP6 ---

Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀

Reply 4 of 4, by Horun

User metadata
Rank l33t++
Rank
l33t++

Nice ! I have a POD83 (or 486 ODP as some call it) and did not know the cpu had a fan sensor pin. Guess old dogs do learn new tricks 😀

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun