IBM PCjr ATX Power Adapter, US Shipping
| ATX2PCjr DIY Kit $12 + $4 US shipping | |
| Assembly Service add-on 5/ea | |
| International(outside the US) Shipping Extra $7 |
I've been told this doesn't work with 24pin ATX PicoPSU versions because they stick up too high on the PCB. I currently have no plans to change the board design to try and work around this. There isn't a lot of vertical space left to move the connector lower. I would just recommend making sure you only get a 20pin PicoPSU.
If these are sold out please email me at akbkuku@akbkuku.com so I can get an idea of how many of these I need to order for the next batch. I can also let you know when the new ones come in.
New versions are using a different power switch and include a reset button now
Features
- Open source design available here on Github
- Compatible with a standard ATX PSU for easy install
- Compatible with PicoPSU for compact and seamless installs
- ATX PS_ON connected switch for power on/off
Open Source
Yes, the design files are all up on Github. I don't lock down my projects so that their continued existence is reliant on my input. The EDA and CAD files needed to make these from scratch are all in there.
FAQ
Q: What is a PicoPSU and/or where can I get one?
A: http://www.mini-box.com/s.nl/sc.8/category.13/.f
Q: Which PicoPSU/What Power/How Many Watts ... should I get?
A: The exact one I am using is available here: http://www.mini-box.com/picoPSU-80. The only thing you need to worry about when choosing a PicoPSU is the ATX power connector. It needs to be a 20 pin model. The original PSU in the PCjr was only 33W and as far as I know, all PicoPSU's are rated for more than that. You will also need a 12V power supply able to put out at least 3A, more is fine. At the link you can add a suitable PSU if you want to go the high quality route. Adrian Black tried out using a cheaper ebay option and it seems to be working fine for him. I haven't tested them myself.
Q: I have a 3D Printer, can I order this without the printed parts for a lower cost?
A: The cost of the printed resources come out to about $0.25. I'm not even including it in my pricing model. So you're getting them for free anyway.
Q: With this I can power all my side cars without a power side car right?
A: I am strongly recommending against that. The PCjr system board wasn't design to handle high power delivery through the expansion connector. I don't know what the consequences of doing so would be.
What you get
Assembled Version
- The power board ready to plug in
- Two 3D printed rear panels for ATX or PicoPSU use
- A cabled switch to be installed in a 3D printed panel with mounting screw
Kit Version
- The power board PCB
- Molex 20-pos Mini-Fit jr connector (ATX Power)
- Amp 4-pos connector (floppy power)
- 3-pos 100mil pitch male header (fan connector)
- 2-pos 100mil pitch male header (switch connector)
- Two 3D printed rear panels for ATX or PicoPSU use
- A panel mount switch (power control)
- 2-pos 100mil pitch female header (switch connector)
- 2 wires (power switch)
- Shrink tube (power switch)
- Screw (power switch)





