Anthony Spargo
UNITED KINGDOM • + Follow
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RAPID ATX Adaptor V2
ATX adaptor with user support for additional features to increase usefulness. It was made to be a big improvement over the V1 and incorporate features that I wanted on my 3D printers.
Ideal for powering your 3D printer with an ATX power supply and controlling RGB LED strips without any more boards or risking frying the printer motherboard.
Supports the following:
- Up to 6 12V fans from the board itself.
- Connecting a switch to to turn the power supply on and off. (Use a 2-pin jumper to make it always on)
- RJ45 patch cable to be used to control 2 hotend fans, 1 Z-axis sensor and a thermistor. (The 2 fans use a common 12V and separate grounds as per the Duet board it was built for, it allows for independent control of a heatsink cooling fan and a part fan.)
- Non-addressable 4-pin 12V RGB LED support up to 500mA per channel.
- Additional switchable load channel up to 500mA.
- Inline mini automotive blade fuses to protect circuits and the power supply.
- 2 auxiliary power pins for 5V and 3.3V connections.
Known bugs:
- Only D0 and D1 LEDs should be populated as a common resistor is used.
- Blade fuse holders may need their legs bending to be soldered on in some cases.
- LM5122 boost circuit worked in open circuit to produce 24V but didn't seem to work in a loaded state, test equipment was not available to verify if it was staying at 24V under heavy loads.
Untested:
- 8 pin PCIe power connection untested, if you're going to try this you should make sure the power supply uses a single rail just in case there's an issue.
May 25,2021
974 views
RAPID ATX Adaptor V2
2 Layers PCB 60 x 108 mm FR-4, 1.6 mm, 1, HASL lead free, Green Solder Mask, White silkscreen
ATX adaptor that also accepts inputs from control boards such as the DUET to control RGB lights, fan speeds and a sensor over an RJ45 cable.
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Published: May 25,2021
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- Engineer Dec 14,2021
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